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Autore: Grafiati

Pubblicato: 26 ottobre 2023

Ultima modifica: 16 aprile 2024

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1

Rabe, Richard L., Billie J. Collier e John R. Collier. "Processability and Properties of a Rayon/Nylon Composite Fiber". Textile Research Journal 58, n. 12 (dicembre 1988): 735–42. http://dx.doi.org/10.1177/004051758805801208.

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Abstract (sommario):

The effectiveness of line speed and coating material feed pressure as control parameters in producing a rayon/nylon sheath-core bicomponent fiber has been studied, and the mechanical and sorptive properties of these internally reinforced rayon fibers have been determined. Results indicate that there is a wide range of line speeds and feed pressures under which a stable, completely regenerated viscose rayon coating can be applied to a nylon 6 core fiber, and line speed and viscose feed pressure can be successfully used as process control parameters. The nylon core fibers dominate the mechanical properties, conferring characteristics that should impart strength and durable press performance to the fabrics formed from them. The sorptive characteristics are dominated by the rayon skin, however, and since this skin is unoriented, its contribution is enhanced with respect to that which might be expected from oriented rayon found in neat fibers.

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2

Basit, Abdul, Wasif Latif, Sajjad Ahmad Baig e Ali Afzal. "The Mechanical and Comfort Properties of Sustainable Blended Fabrics of Bamboo With Cotton and Regenerated Fibers". Clothing and Textiles Research Journal 36, n. 4 (18 giugno 2018): 267–80. http://dx.doi.org/10.1177/0887302x18782778.

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The worldwide growing need of cotton but its lower production has boosted the production of regenerated cellulosic fibers. This work compares the thermal comfort and mechanical properties of bamboo rayon fiber blends with cotton and other regenerated fibers. So, bamboo rayon fibers were blended with cotton, tencel lyocell, modal rayon, and viscose rayon. One-hundred-percent pure fabrics of bamboo rayon, cotton, tencel lyocell, modal rayon, and viscose rayon were made. Also, 50:50 blends of bamboo rayon with cotton, tencel lyocell, modal rayon, and viscose rayon were prepared. Plain-woven fabrics were made by using yarns of 20 tex. The thermal comfort and mechanical properties were analyzed. It is found that 100% tencel lyocell fabrics give higher mechanical and comfort properties. Similarly, bamboo rayon:tencel lyocell (50:50)–blended fabric gives better thermal comfort and mechanical properties than bamboo rayon:cotton–, bamboo rayon:modal rayon–, and bamboo rayon:viscose rayon–blended fabrics.

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3

Biantoro, Reynaldo, e Chandra Apriana Purwita. "Review: Pembuatan Serat Rayon". JURNAL SELULOSA 9, n. 02 (31 dicembre 2019): 51. http://dx.doi.org/10.25269/jsel.v9i02.273.

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Serat sintetis dari minyak bumi memiliki posisi penting dalam produk tekstil. Lebih dari 50% produksi serat dunia didominasi oleh serat sintetik. Meskipun serat sintetik lebih murah, produktivitasnya tinggi, dan lebih tahan lama tetapi serat tersebut tidak dapat terurai secara alami dan proses pembuatannya menggunakan bahan yang dapat merusak lingkungan dan mengancam kesehatan. Meningkatnya kesadaran terhadap isu-isu terkait ekologi dan lingkungan telah mendorong pencarian solusi alternatif bahan baku dan pengembangan metode pembuatan serat yang ramah lingkungan. Serat regenerasi merupakan jenis serat semisintetik yang dibuat dari hasil regenerasi selulosa yang menggunakan bahan baku terbarukan yaitu kayu dan nonkayu yang diproses lebih lanjut menjadi dissolving pulp. Serat ini lebih ramah lingkungan karena lebih mudah terdegradasi. Metode regenerasi serat selulosa lebih berkelanjutan dibandingkan penggunaan bahan baku minyak bumi yang ketersediannya terbatas. Dalam makalah ini dipaparkan sejumlah metode pembuatan serat rayon untuk tekstil menggunakan proses konvensional hingga proses alternatif yang lebih ramah lingkungan. Proses tersebut antara lain proses nitrat, cuproammonium, asetat, viskosa, lyocell, larutan ionik, modal, dan karbamat. Tujuan makalah ini adalah untuk memberikan informasi komprehensif mengenai berbagai proses pembuatan serat rayon serta keunggulan dan kelemahan yang menyertainya, karakteristik dan sifat serat yang diperoleh, dan metode terbaru seperti lyocell dan larutan ionik memiliki dampak lingkungan yang relatif rendah sehingga memiliki potensi untuk dikembangkan. Review: Making Rayon FiberAbstractSynthetic fibers from petroleum have an important position in textile products. More than 50% of the world’s fiber production is dominated by synthetic fibers. Although synthetic fibers are cheaper, high productivity, and more durable, they cannot biodegrade naturally and the manufacturing process uses materials that can damage the environment and threaten health. Increased awareness of issues related to ecology and the environment hasled to the search for alternative solutions for new raw materials and the development of environmentally friendly fiber making process. Regenerated fiber is a type of semisynthetic fiber made from cellulose regeneration using renewable raw materials such as wood and non-wood which are further processed into dissolving pulp. This fiber is more environmentally friendly because it is more easily degraded. Regenerated fiber methods are more sustainable than the use of petroleum raw materials which have limited availability. In this paper, a number of methods for making rayon fibers for textiles are presented using conventional processes to alternative processes that are more environmentally friendly. These processes include nitrate, cuproammonium, acetate, viscose, lyocell, ionic solution, modal, and carbamate. The purpose of this paper is to provide comprehensive information on the various processes of making rayon fibers as well as the advantages and disadvantages, the characteristics and properties of the fibers, and the latest methods such as lyocells and ionic solutions have relatively low environmental impact so that they have the potential to be developed.Keywords: dissolving pulp, rayon fiber, cellulose, textile, viscose

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4

Duan, Ya Feng, Jiang Wei Yao e Yue Zhang. "Development on the Multi-Component Blending Yarn of Hemp/ Anti Bacteria Fine Rayon/Micro-Porous Polyester Fiber". Advanced Materials Research 317-319 (agosto 2011): 2013–17. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.2013.

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The hemp, anti-bacteria fine rayon and micro-porous polyester fiber were select to spin into the multi-component blending yarn by ring spinning process. The performances of these fibers were analysed, the spinning process were presented. The multi-component blending yarn of Hemp/Anti bacteria fine rayon/micro-porous polyester fiber of excellent was spun successfully, and the performance of yarn was examined and discussed.

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5

Moon, Sook Young, Myung Soo Kim e Yun Soo Lim. "Preparation and Characterization of Chemical Activated Fibers on Various Carbon Fibers". Materials Science Forum 510-511 (marzo 2006): 314–17. http://dx.doi.org/10.4028/www.scientific.net/msf.510-511.314.

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OXI-PAN fibers, Kynol fibers, and rayon fibers were used as precursors for the preparation of activated carbon fibers (ACFs) by chemical activation with KOH at 800°C. The effects of different precursor fibers and fiber/KOH ratios on the final ACFs are discussed. The precursor fibers used were appropriate for the ACFs in a single stage pyrolysis process. The OXI-PAN fibers, which were activated with KOH of 2.0M, showed a specific surface area of 2328m2/g, however, lost the fiber shape because of low yields. The Kynol fibers and Rayon fibers showed the high yields, but lower specific surface areas of 900m2/g and 774m2/g, respectively, at KOH of 1.5M. The OXI-PAN fibers, which were activated with KOH of 1.5M, have a specific surface area of 1028m2/g and higher micro-pore volumes and lower yields rather than Kynol-1.5 and Rayon-1.5 samples. This phenomenon is attributed to higher chemical resistance of the Kynol and Rayon fibers rather than OXI-PAN fibers. However, the Kynol fibers were the best precursors on KOH activation at 800°C when carbon yields, surface areas, and micropore volumes are condisered.

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6

Charoensai, Chakkrit, Porntip Sae-Bae, Jantip Setthayanond, Sasswat Sittikoon e Somporn Chanchanuan. "Utilizing Rayon Fiber Residues from Fiber Manufacturing Industry for Preparation of Cellulose/CMC Hydrogels". Applied Mechanics and Materials 799-800 (ottobre 2015): 52–56. http://dx.doi.org/10.4028/www.scientific.net/amm.799-800.52.

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The cellulose-based hydrogel was successfully prepared from rayon fiber residue obtained from the fiber manufacturing industry. By chemical means, the hydrogel was simply prepared at an ambient temperature by mixing rayon with carboxymethyl cellulose (CMC) in NaOH/urea solution with epichlorohydrin (ECH) as a crosslinking agent. Rayon cellulose was used for stabilizing of hydrogel structure, providing a dimensional stability to the hydrogel whereas CMC acted as a porogen, widening the pore size within the hydrogel structure while swelling in water. With increasing CMC content, the percent water uptake of the hydrogel was increased but the structural stability was impaired. The prepared rayon cellulose/CMC hydrogel could take up more than 200% water within 60 minutes with an appropriate rayon cellulose-to-CMC ratio of 1:1 providing an ultimate balance between percent water uptake and the structural stability of the hydrogel. Its percent water uptake was as high as 285% to its initial dry weight.

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7

Zuigyo, Yugo, e Masahiko Yamamoto. "Basic Study of PK Fiber Tire Cord3". Tire Science and Technology 35, n. 4 (1 dicembre 2007): 317–25. http://dx.doi.org/10.2346/1.2802609.

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Abstract Rayon, nylon, and polyester have been used for a long time as general tire reinforcements. Recently application of p-aramid fiber, which has high tenacity and high modulus properties, is gradually increasing in order to satisfy high-performance requirements, large tires, and tire weight reduction. However, in working with high-strength and high-modulus fibers such as p-aramid it is normally difficult to obtain excellent adhesion with simple processing methods and their fatigue resistances are not good. This time we have focused on a new high-tenacity and high-modulus “polyketone” fiber obtained by gel-spun technology and performed a basic study in tire cord application. Through laboratory evaluation, we have confirmed that polyketone cord fiber has excellent adhesion, comparable with rayon and nylon, and good fatigue resistance in comparison with rayon. In addition, through its tire evaluation as a body-ply cord and cap-ply cord for PCR tires, we have confirmed its performance advantage in comparison to current tire cords.

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8

Di, Youbo, Guoqiang Long, Huiqin Zhang e Qingshan Li. "Preparation and Properties of Viscose Rayon/O-carboxymethyl Chitosan Antibacterial Fibers". Journal of Engineered Fibers and Fabrics 6, n. 3 (settembre 2011): 155892501100600. http://dx.doi.org/10.1177/155892501100600305.

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Antimicrobial viscose rayon/O-carboxymethyl chitosan fibers (VCMFs) were manufactured by spinning the mixture of O-carboxymethyl chitosan (O-CMCS) xanthate and cellulose xanthate via the viscose process. The structure, morphology and mechanical properties were investigated by infrared, scanning electron microscopy, transmission electron microscope and tensile test. The results show that the blend fibers of cellulose and O-CMCS were satisfactorily prepared and the two polymers were mixed homogeneously. VCMFs display striation along the fiber similar to those of viscose rayon fibers, and their mechanical properties are close to that of viscose rayon. With O-CMCS blended, VCMFs showed good moisture absorption and antibacterial activity against E.coli.

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9

Andalia, Debbi, e Kurniawati. "Analysis of Sustainable Textile Practices by Viscose Rayon and Yarn Producer and Customers". 14th GCBSS Proceeding 2022 14, n. 2 (28 dicembre 2022): 1. http://dx.doi.org/10.35609/gcbssproceeding.2022.2(83).

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Modest fashion expenses reached USD 270 billion in 2017 and is expected to grow by 5% annually to reach approximately USD 371 billion by 2023, according to Thomson Reuters and Dinar Standard, in State of the Global Islamic Economy Report 2018-2019. While Textile Exchange reported that world textile fiber production is dominated by non-biodegradable fossil fibers, that is polyester. To this situation, viscose rayon (one of Man-Made Cellulose Fibers (MMCF)) come up as one of preferred fiber and material for textile. It is biodegradable because it primarily produced from wood. However, the nature of processing steps involve significant amount of chemicals and utilities, start from wood sources until dissolving wood pulp as raw material to viscose rayon and yarn production, which is also high risk to environment. It is important to study on the sustainability practices to integrate economic, social and environment aspects. This research is having two (2) groups of objects, they are: viscose rayon and yarn integrated producers and their customers. Primary source of the data are field observations and structural interview. In addition, this research is supported by second resources of data, such as: books, reports/records, credible websites, etc. Then, content analysis is used to analyse those data. Keywords: Sustainable practices, viscose rayon and yarn, textiles, content analysis.

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10

Li, Yan Qing, Hong Xia Zhang, Wei Tian, Cheng Yan Zhu e Zhi Lei Chen. "Fuzzy Evaluation of the Properties of Fabrics Blended with PTT/PLA/Rayon Fibers". Advanced Materials Research 332-334 (settembre 2011): 841–44. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.841.

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Abstract (sommario):

For fabrics, the diversification and superior of the properties and the styles can be achieved by blending fibers. To keep up with the demand of the market, PTT, PLA and Rayon were selected as the materials and 10 kinds of PTT/PLA/Rayon blended fabrics with different fiber content were designed and woven. And then the wearabilities of the fabrics were tested respectively. At last, fuzzy evaluation wad used to discuss the affection of the blended ratio on the fabric’s wearability. The results show that various kinds of wearabilities of the fabric are the best when the blending ratio is PTT/ PLA/Rayon 40/30/30.

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11

Sun, Yu Chai, e Zhong Cheng. "Property Analysis of Stainless Steel Fiber (Yarn) and its Effect on Knitting Process". Advanced Materials Research 1053 (ottobre 2014): 93–96. http://dx.doi.org/10.4028/www.scientific.net/amr.1053.93.

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In this paper the frictional and tensile properties of stainless-steel fiber, cotton fiber, polyester fiber and rayon fiber, as well as the tensile and surface hairy properties of stainless-steel yarn, cotton yarn and wool yarn were tested and compared. Experimental results shown that the stainless-steel fiber has greater density, friction coefficient and tensile breakage strength but smaller breaking elongation. On the basis of summarizing the differences between stainless-steel fiber (yarn) and conventional textile fibers (yarns), difficulties occurred during knitting process were analyzed and the corresponding solutions were proposed.

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12

Mlynar, Michèle. "Qualitative Evaluation of Nonwoven Samples Using DuPont Fiber Identification Stain No. 4 and Microscopy". International Nonwovens Journal os-9, n. 2 (giugno 2000): 1558925000OS—90. http://dx.doi.org/10.1177/1558925000os-900213.

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In this paper, we describe how the DuPont Identification Stain No. 4 provides a simple means to quickly identify individual fibers using a microscope. We looked at different nonwoven samples, including polyester, rayon, wood pulp and polypropylene fibers as well as several finished webs with different fiber blends, thermobonding points and binder distributions.

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13

Easson, Michael, Andres Villalpando e Brian D. Condon. "Absorbent Properties of Carboxymethylated Fiber, Hydroentangled Nonwoven and Regenerated Cellulose: A Comparative Study". Journal of Engineered Fibers and Fabrics 12, n. 4 (dicembre 2017): 155892501701200. http://dx.doi.org/10.1177/155892501701200408.

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Commercially-available, bleached cotton fibers, rayon, and their hydroentangled counterparts were carboxymethylated to produce cellulosic products with increased absorbency. These cellulose materials were tested for absorbance, spectroscopic properties, degree of substitution and carding ability. Carboxymethylated fibers and hydroentangled webs exhibited increased water retention as the degree of substitution increased before losing fiber integrity and carding ability.

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14

Bychkova, E. V., e L. G. Panova. "Fire-Resistant Viscose Rayon Fiber Materials". Fibre Chemistry 48, n. 3 (settembre 2016): 217–23. http://dx.doi.org/10.1007/s10692-016-9771-9.

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15

Uraki, Yasumitsu, Yousuke Miharu, Ryo Funada, Yoshihiro Sano, Masaki Mitsuhashi, Kohki Itoyama e Hiroaki Tanibe. "Preparation and Characterization of Alginate-blended Rayon." FIBER 56, n. 10 (2000): 482–86. http://dx.doi.org/10.2115/fiber.56.482.

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16

Nakamura, Teisaku, Hatsue Yoshida, Toshihiko Amano e Tadahiro Fujita. "SURFACE STRUCTURE FORMATION OF CUPRAAMMONIUM RAYON FIBERS". Sen'i Gakkaishi 46, n. 1 (1990): 21–25. http://dx.doi.org/10.2115/fiber.46.21.

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17

KITANO, HIROKAZU. "New Products and Technologies of Mitsubishi Rayon". Sen'i Gakkaishi 48, n. 5 (1992): P235—P237. http://dx.doi.org/10.2115/fiber.48.5_p235.

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18

BLISS, TERRY, MARTIN OSTOJA-STARZEWSKI e JAIME CASTRO. "A three-dimensional model of fine particle retention during percolation through a fiber mat". August 2015 14, n. 8 (1 settembre 2015): 546–54. http://dx.doi.org/10.32964/tj14.8.546.

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Abstract (sommario):

Fine particles are usually retained in fiber mats by sieving. To date, no theory has combined fiber and mat characteristics into a predictive retention model. A multilayer analytical retention model developed during this study predicts retention within a thick fiber mat by modeling retention as particles pass through a series of very thin fiber mats. A suspension of 5-75 μm toner particles was percolated through rayon fiber mats. The model’s prediction approached the experimental data only when the ratio of particle diameter to fiber diameter increased toward 2.0, the upper limit within the rayon fiber mat data set. Retention was also experimentally determined on the macroscale with simulated fiber mats, through which 4-20 mm beads were dropped. The particle diameter was at least 2.2 times the fiber diameter for all of the macroscale experimental data, explaining the much better fit of the data from those experiments to the model’s predictions.

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19

Komarova, O. S., V. V. Kholin, M. F. Tereshchenko, S. V. Pavlov, M. F. Bohomolov, A. K. Zilgaraeva, O. S. Bezkrevnyi e A. V. Reva. "Fiber-optic minimally invasive diffuse diffuser on optical fiber for intratissue laser exposure". Optoelectronic Information-Power Technologies 41, n. 1 (2 maggio 2022): 39–46. http://dx.doi.org/10.31649/1681-7893-2021-41-1-39-46.

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The technical parameters of minimally invasive diffuse diffusers are analyzed in the article on the distal part of the polymer optical fiber. Prototypes were made diffuse diffusers made of polymer optical fibers manufactured by Mitsubishi Rayon Corporation (Japan) of different lengths: SC-20 with a diameter of 500 μm and SC-10 with a diameter of 250 μm by machining their reflective shell to apply inhomogeneities and changes in the conditions of total internal reflection. The conducted research created a basis for the introduction of new methods of creation minimally invasive diffuse diffusers in the distal part of the optical polymer fiber.

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Jiang, Fenghua, Menghui Wang, Jinfeng Ding, Wei Cao e Chengjun Sun. "Occurrence and Seasonal Variation of Microplastics in the Effluent from Wastewater Treatment Plants in Qingdao, China". Journal of Marine Science and Engineering 10, n. 1 (4 gennaio 2022): 58. http://dx.doi.org/10.3390/jmse10010058.

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Wastewater treatment plants (WWTPs) are considered as one of the important sources of microplastics (MPs) in the marine environment. In this paper, the characteristics of MPs in the effluent discharged from five WWTPs in Qingdao, China, in winter and summer were analyzed. The results showed that only fibers and fragments were observed, with fibers as a dominant part. Rayon was the most domain polymer type, followed by Polyethylene terephthalate (PET) and chlorinated polyethylene (CPE). The average sizes of fiber MPs were 1010 ± 924 µm and 610 ± 691 µm in winter and summer, respectively. The contents of rayon were higher in summer than in winter. More small and transparent MPs were observed in summer. Rayon abundances ranged from 4.1 to 19.9 items/L and 33.3 to 116.7 items/L, with 12.3 ± 5.6 items/L and 67.6 ± 30.6 items/L as the average value in winter and in summer, respectively. The abundances of other polymer type MPs were 7.23~19.65 items/L with average value of 12.7 ± 4.7 items/L in winter and 12.0~20.0 items/L with 16.8 ± 4.7 items/L in summer. The daily emissions were estimated as 8.38 × 109~4.25 × 1010 items (9.2~27.8 kg) for rayon and 8.0 × 109~1.2 × 1010 items (7.6~5.3 kg) discharged for the other polymer type MPs from the five WWTPs. The results indicated that the seasonal variation of characteristics and emission of MPs in the effluent from WWTPs was mainly caused by increasing discharge of rayon, which may relate to people’s living habits and tourism activities.

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MATSUSHITA, YOSHIHIRO. "Recovery and Growth of Rayon Industry". Sen'i Gakkaishi 70, n. 2 (2014): P_69—P_76. http://dx.doi.org/10.2115/fiber.70.p_69.

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Vara Prasad, Vemu, e Javisseti Nageswara Rao. "A Review on Acoustic Emission Characterization of Failure Modes of Carbon Fiber Reinforced Composites". Advanced Materials Research 1148 (giugno 2018): 43–47. http://dx.doi.org/10.4028/www.scientific.net/amr.1148.43.

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Among various composites available for use, carbon fiber reinforced composite is unique in its Nature. Carbon fiber is an extremely strong thin fiber made by pyrolyzing synthetic fibers, such as rayon, until charred. High Strength Composites are made from this fiber by using appropriate matrix material mostly Epoxy resins are used. High Strength, stiffness, light weight and high thermal conductivity are the main advantages over the other composites. Making products with one single composite sheet is not possible always. Some of the intricate or complex shape making is required for joining of two composite sheet. The composites joining can be done in three ways mainly Adhesive, Riveting and Hybrid. Based on the Review among all these joints adhesive joining gives better economic solution in joining. Experimental results point to significant influence of fibre on mechanical properties of sample. The tensile test of the acoustic signal emission (AE) to identify the current state of material integrity in real time. Acoustic system signal correlated to damage events. The carbon fiber composite characteristic failure mechanisms are initiated on the microscale and result in a spontaneous release of elastic energy in terms of mechanical stress waves, the so-called acoustic emissions.

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Yusnimar, Evelyn, Azka Aman, Chairul, Suci Rahmadahana e Amun Amri. "Manufacturing of high brightness dissolving pulp from sansevieria-trifasciata fiber by effective sequences processes". Communications in Science and Technology 7, n. 1 (31 luglio 2022): 45–49. http://dx.doi.org/10.21924/cst.7.1.2022.681.

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The need of dissolving pulp (DP) for rayon fiber production is increasing rapidly in recent years. Sustainable sources of DP raw materials and an effective manufacturing process are urgently required. This study aims to manufacture dissolving pulp (DP) with high brightness from Sansevieria-trifasciata (ST) fiber through the pre-hydrolysis, soda-Anthraquinone (Soda-AQ) cooking, and chlorine-free bleaching processes. The cellulose content, kappa number, pulp yield, and viscosity were analyzed. The results showed that the ?-cellulose content in ST raw material (39.43%) was relatively similar to the ?-cellulose content in Acacia pulping kraft (39.2%). Furthermore, the variations in pre-hydrolysis time affected the Kappa number, pulp yield, and viscosity. The DP obtained by the elementary chlorine-free (ECF) bleaching process had a viscosity of 9.3 cP, ?-cellulose content of 97.7%, and the brightness of 90.1% which was higher than the ISO standard of pulp brightness. The high DP brightness obtained from this unique combination of pre-hydrolysis, soda-AQ cooking and chlorine-free bleaching sequences has great potential for further development, as it can be used in viscose rayon staple fibers production.

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STORCK, WILLIAM. "BASF agrees to sell rayon fiber operations". Chemical & Engineering News 70, n. 13 (30 marzo 1992): 6. http://dx.doi.org/10.1021/cen-v070n013.p006a.

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Kauffman, George B. "Rayon: The first semi-synthetic fiber product". Journal of Chemical Education 70, n. 11 (novembre 1993): 887. http://dx.doi.org/10.1021/ed070p887.

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MATSUSHITA, YOSHIHIRO. "PREWAR PART, II, Growth of Rayon Industry". Sen'i Gakkaishi 69, n. 11 (2013): P_400—P_405. http://dx.doi.org/10.2115/fiber.69.p_400.

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MATSUSHITA, YOSHIHIRO. "PREWAR PART, III, Growth of Rayon Industry". Sen'i Gakkaishi 69, n. 12 (2013): P_450—P_455. http://dx.doi.org/10.2115/fiber.69.p_450.

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Khalili, Pooria, Mikael Skrifvars, Hom Nath Dhakal, Saeid Hosseinpour Dashatan, Mikael Danielsson e Alèxia Feiner Gràcia. "Mechanical Properties of Bio-Based Sandwich Composites Containing Recycled Polymer Textiles". Polymers 15, n. 18 (19 settembre 2023): 3815. http://dx.doi.org/10.3390/polym15183815.

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Abstract (sommario):

In this paper, sandwich composites were produced by compression moulding techniques, and they consisted of regenerated cellulose fabric (rayon) and bio-based polypropylene (PP) to form facings, while virgin and recycled polyamide (PA) textiles were used as core materials. To compare the mechanical performance between sandwich composites and typical composite designs, a control composite was produced to deliver the same weight and fiber mass fraction from rayon and PP. To evaluate the influence of recycled textile on the mechanical properties of the composites, a series of flexural, low velocity impact (LVI) and tensile tests were performed. It was found that the incorporation of thicker PA textile enhanced the bending stiffness by two times and the peak flexural force by 70% as compared to those of control. Substitution of a layer of recycled textile for two layers of rayon provided a good level of impact energy absorption capacity (~28 J) and maximum force (~4893–5229 N). The tensile strength of the four sandwich composites was reported to be in the range of 34.20 MPa and 46.80 MPa. This value was 91.90 for the control composite. The 2D cross-section slices of the composite specimens did not show any evidence of fiber tow debonding, fiber bundle splitting, or delamination.

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29

OHKITA, JYUNJI, OSAMU TAKEMURA e MITSUO OTANI. "Development of the Rayon Filament Yarn dyeable by Dispersion Dyes". Sen'i Gakkaishi 53, n. 9 (1997): P305—P308. http://dx.doi.org/10.2115/fiber.53.9_p305.

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30

Takahashi, Tetsuya, Wakako Kasai e Tetsuo Kondo. "Dye Degradation Effect of Rayon Fibers Containing Titanium Oxide Photocatalyst". FIBER 65, n. 7 (2009): 167–75. http://dx.doi.org/10.2115/fiber.65.167.

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31

Takahashi, Tetsuya, Wakako Kasai e Tetsuo Kondo. "Dye Degradation Effect of Rayon Fibers Containing Titanium Oxide Photocatalyst". FIBER 65, n. 7 (2009): 176–83. http://dx.doi.org/10.2115/fiber.65.176.

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32

Khasbaatar, D., e Ung Su Choi. "Fourier Transform Infrared Spectroscopy Study on Cation adsorption on Viscose Rayon Succinate". Mongolian Journal of Chemistry 12 (24 settembre 2014): 136–41. http://dx.doi.org/10.5564/mjc.v12i0.189.

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Abstract (sommario):

Ion-exchange materials have been considered as suitable material for the recovery of heavy metals in water. A viscose rayon succinate, synthesized from viscose rayon and succinic anhydride in presence of DMSO, to remove trace bivalent metal ions such as Ag+, Cu2+, Ni2+, Pb2+, Zn2+ and Cr3+, was studied using FT-IR for the behavior of metal adsorption. Both esterification and carboxyl bonding of viscose rayon succinate were assigned essentially at 1729 and 1693cm-1, respectively. And the essential band of bonding between metal and the material was determined at 1625cm-1. The available adsorption capacity of this fiber was 6.2 mequiv/g. The adsorption of metal ions on the viscose rayon succinate follows the order of Cu2+>Cr3+>Ni2+>Pb2+>Zn2+>Ag+ with maximum adsorptions capacities 4.2, 1.42, 0.91, 0.83, 0.69 and 0.35 mmol/g, respectively.DOI: http://dx.doi.org/10.5564/mjc.v12i0.189 Mongolian Journal of Chemistry Vol.12 2011: 136-141

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33

Miyamichi, Kazuo, e Tomio Watanabe. "PREPARATION OF ACTIVE CARBON FIBERS FROM RAYON PRECURSOR TREATED WITH AMMONIUM SULFATE". Sen'i Gakkaishi 42, n. 12 (1986): T699—T703. http://dx.doi.org/10.2115/fiber.42.12_t699.

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34

INAGAKI, HIROSHI. "An “Entrepreneur” of Three Members at Daybreak of Rayon Industry in Japan". Sen'i Gakkaishi 52, n. 5 (1996): P216—P221. http://dx.doi.org/10.2115/fiber.52.5_p216.

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35

dos Santos, Renan Felinto, Fernando Ribeiro Oliveira, Marcio Roberto da Rocha, Rafael Aguilar Velez e Fernanda Steffens. "Reinforced cementitious composite using viscose rayon fiber from textile industry waste". Journal of Engineered Fibers and Fabrics 17 (gennaio 2022): 155892502211157. http://dx.doi.org/10.1177/15589250221115722.

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Abstract (sommario):

This study presents an analysis of the possible use of a viscose rayon (CV) fiber from textile industry wastes to develop a reinforced cementitious composite as an alternative for textile discharge valorization. Several techniques were used to characterize precursor fibrous waste material such as SEM, FT-IR, DSC, and TGA. The experimental studies were conducted based on a conventional cementitious mortar (control) and four different fiber contents (0.5, 1, 2, and 4 wt%). For mechanical behavior analysis, uniaxial compressive strength tests were carried out at different ages (7, 14, and 28 days after production). The results showed favorable CV fiber addition as reinforcement up to a maximum limit. The optimum concentration of fiber was 0.5 wt% (FRC0.5), which provided 28 days of higher compression strength. The addition of CV waste as reinforcement in cementitious matrix resulted in an improved compressive strength above 20.6% compared to the conventional non-reinforced mortar. Furthermore, CV fiber addition improved the ductile behavior of the new composite allowing a controlled failure, even after maximum rupture loading.

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36

Lou, Ching Wen, Ya Lan Hsing, Wen Hao Hsing e Jia Horng Lin. "The Influence of Hot Pressing Temperatures in Needle Punching Nonwoven". Advanced Materials Research 910 (marzo 2014): 279–82. http://dx.doi.org/10.4028/www.scientific.net/amr.910.279.

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Abstract (sommario):

Non-woven textile industry in an emerging field, with the process short, high yield, low cost and wide source of raw materials, but also has excellent performance of many functions on, making non-woven over the past half century gained textiles attention and consumers of all ages. The proportion of the world of non-woven fiber material used in the product, 85% in rayon ,and the other 15% in natural fibers, polyester fibers which accounted for the largest proportion of use. The experiment uses a low melting point polyester fiber (LPET) 20%, three-dimensional hollow curly polyester fiber (TPET) and recycled far infrared fiber (REPET) 40% each as the basic conditions change pressing temperature 100 °C-140 °C, in order to observe and compare the effects of temperature on the non-woven fabric, this experiment tests including air permeability, tensile strength testing, infrared testing and SEM, respectively in different hot pressing temperature, each of the non-woven hot pressing temperatures sample go through microscopic to analysis for non-woven with the hot temperatures strong reason to improve or decline with hot temperature of air permeability.

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37

MAMON SARKAR, AKASH, JANNATUN NAYEEM, M. MOSTAFIZUR RAHAMAN e M. SARWAR JAHAN. "DISSOLVING PULP FROM NON-WOOD PLANTS BY PREHYDROLYSISPOTASSIUM HYDROXIDE PROCESS". Cellulose Chemistry and Technology 55, n. 1-2 (12 febbraio 2021): 117–24. http://dx.doi.org/10.35812/cellulosechemtechnol.2021.55.12.

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Abstract (sommario):

The garment industry is the backbone of Bangladesh’s economy, which imports 30000 metric tons of rayon fiber every year. Bangladesh used to have a rayon plant, but it was shut down a long time ago. At present, the establishment of a new rayon plant in Bangladesh has become an objective. As a forest deficient country, non-wood plants need to be explored for rayon grade dissolving pulp production. Therefore, in this paper, prehydrolysis potassium hydroxide (KOH) pulping process has been investigated for dissolving pulp production from rice and wheat straws, corn stalk, dhaincha and jute stick. The lowest prehydrolysis yield was 70.1% obtained for corn stalks and the highest prehydrolysis yield was 92.1% for wheat straw. The KOH cooking of prehydrolysed rice straw, wheat straw and corn stalks with 14% alkali charge produced pulps with kappa numbers of 5.7, 4.5 and 8.8, respectively, while prehydrolysed dhaincha and jute stick needed 18% alkali charge to get a bleachable pulp. Dhaincha showed the highest pulp yield (37.3%) with the highest α-cellulose content (92.24%) and the lowest residual pentosan content (5.37%). Further purification with cold KOH extraction increased purity by 3% for rice straw pulp and by 1% for dhaincha, wheat straw, corn stalks and jute stick pulp. Thus, the dissolving pulp produced in this study by the prehydrolysis KOH process can meet the criteria for rayon grade pulp.

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38

Ko, Young Gun, Ung Su Choi, Dong June Ahn, Jeong Su Kim e Tae Young Kim. "Physicochemical and thermal studies of viscose rayon borate fiber and its carbon fiber". Journal of Polymer Science Part A: Polymer Chemistry 39, n. 22 (2001): 3875–83. http://dx.doi.org/10.1002/pola.10047.

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39

Wakida, Tomiji, Takako Tokuyama, Chizuko Doi, Muncheul Lee, Dong Seok Jeong e Shinzo Ishida. "Mechanical Properties of Polyester/Cotton and Polyester/Rayon Fabrics Treated with Ammonia-Gas". FIBER 60, n. 1 (2004): 34–37. http://dx.doi.org/10.2115/fiber.60.34.

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40

Miyamichi, Kazuo, Kenji Kageno e Ryutoku Yosomiya. "EFFECT OF INORGANIC COMPOUNDS ON YIELD AND TENSILE STRENGTH OF PYROLYSED RAYON FABRICS". Sen'i Gakkaishi 42, n. 8 (1986): T444—T454. http://dx.doi.org/10.2115/fiber.42.8_t444.

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41

Hsieh, You-Lo, e Bangling Yu. "Liquid Wetting, Transport, and Retention Properties of Fibrous Assemblies: Part I: Water Wetting Properties of Woven Fabrics and Their Constituent Single Fibers". Textile Research Journal 62, n. 11 (novembre 1992): 677–85. http://dx.doi.org/10.1177/004051759206201108.

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Abstract (sommario):

An experimental protocol is described for simultaneous measurements of liquid wetting and retention characteristics in woven fabrics. Dynamic measurements of the liquid-fabric interaction between the lower edge of a vertically hung fabric and a liquid are done with an electronic microbalance. A decoupling method is proposed and tested for separating the liquid wetting and retention components of the measurements. The wetting characteristics of cotton fabrics are not affected by fabric configurations, including length, fabric-water interface depth, and direction. The cosine contact angles obtained on the woven cotton fabrics are identical to those measured on the constituent single cotton fibers. Similar wetting properties between fabrics and their constituent single fibers are also verified on other 100% woven fabrics containing polyester, Nomex, acetate, or rayon fibers. This study demonstrates that the wettability of any fabric containing a single fiber type is the same as its constituent single fibers. The experimental protocol and decoupling approach permit convenient measurement of the intrinsic wetting property of any fiber in its woven form.

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42

Parikh, Dharnidhar V., R. Bresee Randall, U. Muenstermann, Alfred Watzl, LeGrand Crook e Don Gillespie. "Spunlaced Cotton and Cotton Blend Cosmetic Pads and Bed Sheets: Study of Fiber Entanglement". Journal of Engineered Fibers and Fabrics 2, n. 3 (settembre 2007): 155892500700200. http://dx.doi.org/10.1177/155892500700200304.

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Abstract (sommario):

Nonwoven webs containing five different blends of bleached cotton with Lyocell rayon, bicomponent core/sheath polyester/polyethylene, or cotton comber noil were prepared by either light needlepunching, or light needlepunching followed by spunlacing (hydroentanglement). We optically acquired fiber bundle size measurements to learn about the pre-needling process, the hydroentangling process and the influence of fiber blend composition on fiber entanglement. Fiber entanglement measurements were compared to basis weight uniformity measurements. One of the bed sheet developments utilized a combination of bonding technologies (spunlacing and thermal bonding) that used low energy. Results from this work indicate that spunlacing produced high quality cosmetic pads and economical short-life bed sheeting.

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43

Su, Xuefeng, e Theodore J. Heindel. "Effect of Perforated Plate Open Area on Gas Holdup in Rayon Fiber Suspensions". Journal of Fluids Engineering 127, n. 4 (14 aprile 2005): 816–23. http://dx.doi.org/10.1115/1.1994878.

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Abstract (sommario):

Three different aeration plates are used to study their effect on gas holdup and flow regime transition in fiber suspensions. The aeration plates differ by their open-area ratios (A=0.57%, 0.99%, and 2.14%), where the hole diameter remains the same while the number of holes increase. Experiments are performed using three different Rayon fiber lengths (L=3, 6, and 12mm) over a range of superficial gas velocities (Ug⩽18cm∕s) and fiber mass fractions (0⩽C⩽1.8%) in a 15.24cm dia semi-batch bubble column. Experimental results show that the aeration plate with A=0.99% produces the highest gas holdup in an air-water system and low fiber mass fraction suspensions, and the plate with A=2.14% yields the lowest gas holdup in these systems. In medium fiber mass fraction suspensions, the plate with A=0.57% produces slightly higher gas holdup values, while the other two plates yield similar results. The effect of the aeration plate open area on gas holdup diminishes at high fiber mass fractions (C⩾1.2%). All aeration plates generate homogeneous, transitional, and heterogeneous flow regimes over the range of superficial gas velocities for air-water and low fiber mass fraction suspensions. However, the aeration plate with A=2.14% enhances the flow regime transition, i.e., the superficial gas velocity at which transitional flow appears is lower. Additionally, the fiber mass fraction at which pure heterogeneous flow is observed is lower when A=2.14%.

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44

Zhang, San Xing, Yi Nan Zheng, Yan Qing Li, Hai Bin Xu, Hong Xia Zhang e Cheng Yan Zhu. "The Wearability Research of New Environmentally Friendly Acrylic Fiber". Applied Mechanics and Materials 496-500 (gennaio 2014): 202–5. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.202.

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Abstract (sommario):

The subject of interwoven fabric for trial used new environment acrylic fiber with different fiber materials. The warp thread of fabric has two groups, one group of 111.1dtex/36 polyester and the other group of 194.88dtex/ polyester/ rayon (80/20). Weft of raw materials can be categorized to seven kinds of blended yarn. A total of 24 experimental small sample trials were tested. 6 wear ability analyses of breathable, anti-wrinkle, anti-pilling, drape, stiffness and warmth of fabric were done. And reached some conclusions.

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45

Solomon, T. S. "Systems for Tire Cord-Rubber Adhesion". Rubber Chemistry and Technology 58, n. 3 (1 luglio 1985): 561–76. http://dx.doi.org/10.5254/1.3536079.

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Abstract (sommario):

Abstract The last comprehensive review of tire-cord adhesion to rubber was reported by T. Takeyama and J. Matsui in Rubber Reviews for 1969. They covered this subject in depth from its scientific beginnings and dealt mostly with rayon, nylon, and polyester tire-cord adhesion. The objective of this present review will be to up-date the 1969 review. The resorcinol-formaldehyde-latex (RFL) adhesive system developed as a fiber adhesive in the early 1940's is still in use throughout the rubber industry at the present time. No other resin has replaced the resorcinol-formaldehyde resin and no other latex has replaced 2-vinylpyridine-butadiene-styrene latex as components in adhesive dip recipes. This will probably be true into the foreseeable future. There was really no need to improve the adhesion of rayon and nylon to rubber, so very little development work was done with the adhesion of these two fibers. However, a considerable amount of work was done with polyester adhesion and this coincided with the expanded use of poly(ethylene terephthalate) fibers in passenger tires. Much of this effort was concerned with single-step adhesive dips where the adhesion activating ingredients were added to a standard RFL mixture.

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46

Yusnimar, Yusnimar, Khairat Khairat, Drastinawati Drastinawati, Chairul Chairul, Syamsu Herman e Suci Ramadhana. "Dissolving Pulp from Sansevieria Trifasciata Fiber Processed with Water-Pre-Hydrolysis, Soda-Anthraquinone Cooking and Clorine Free Bleaching<i> </i>". Materials Science Forum 1114 (22 febbraio 2024): 73–79. http://dx.doi.org/10.4028/p-1p8sdj.

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Abstract (sommario):

For a long time, rayon has been produced using dissolving pulp (DP). DP is typically made from wood or cotton, but it takes a long time to collect wood, and high-quality cotton must be imported from afar. Sansevieria trifasciata (ST) fiber, which contains more than 50% cellulose, offers potential as a raw material and a substitute for cotton and wood. It is simple to develop and grow. It can endure a wide range of light and temperature conditions. By using the water-pre-hydrolysis, soda-Anthraquinone cooking (soda-AQ), and elementary-chlorine-free (ECF) bleaching sequences, this work aims to convert ST into DP. Results, The DP was produced with a yield of 43.69%, a kappa value of 4.73, a viscosity of 9.3 cP, an alpha-cellulose content of 97.7% and a brightness of 90.7%, which was higher than the ISO brightness of 88%. The DP quality corresponds to the minimum DP level for rayon according to the Indonesian National Standard (SNI). It is very promising for further development, such as being used for viscose fiber production.

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47

Sato, Jun-ya, Takeshi Matsuse, Niamh O'Mara e Masatoshi Saito. "The Influence of Drawing on Solid Structure and Fibrillation Resistance of Cuprammonium Rayon(Cupro)." Sen'i Gakkaishi 54, n. 8 (1998): 407–14. http://dx.doi.org/10.2115/fiber.54.8_407.

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48

Miyamichi, Kazuo, Toshiyuki Takabayashi, Tetsuro Yahagi e Ryutoku Yosomiya. "CHANGES IN THE PHYSICAL PROPERTIES WITH CARBONIZATION OF RAYON FIBERS TREATED WITH AMMONIUM SULFATE". Sen'i Gakkaishi 42, n. 10 (1986): T568—T573. http://dx.doi.org/10.2115/fiber.42.10_t568.

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49

Bychkova, E. V., e L. G. Panova. "Sorption of Flame Retardant by Viscose Rayon Fiber in Manufacture of Flame-Resistant Fibers". Fibre Chemistry 46, n. 2 (luglio 2014): 113–17. http://dx.doi.org/10.1007/s10692-014-9572-y.

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50

Islam, M. Nurul, S. M. Mahruf Hossain, Ayesha Khatton, Jahid Sarker, Helena Akhter Sikder e A. M. Sarwaruddin Chowdhury. "Production of Fabrics with Etherified Jute Blended Yarns". Saudi Journal of Engineering and Technology 7, n. 3 (14 marzo 2022): 147. http://dx.doi.org/10.36348/sjet.2022.v07i03.005.

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Abstract (sommario):

Different fabrics were prepared by plain weaving with the blended yarns made of etherified jute fibre in the ratio of 50:50 with cotton, rayon and polyester. The physical properties of fabrics from blended yarns have been compared with those of cotton fabrics made with the same calculation 30 tex yarns. The mechanical properties of these fabrics were determined to monitor their serviceability in practical use and to ensure their suitability as jute blended cotton and synthetic fabrics. The softness and handling characteristics presented by the blending length and flexible firmness of the blended fabrics were much more comparable to that of the cotton fabrics with the indented fabric structure. The strength properties of etherified jute blended fabrics showed that the durability and serviceability of these fabrics was not much less than that of cotton fabrics due to any stress and deformation during use. It has also been observed that the blending of etherified jute with cotton, rayon, polyester or any other flexible fiber improves the draping properties of the fabrics made from it and in actual use these fabrics have almost the same bright look and firmness of cotton fabrics.

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