Journal articles: 'Rayon des fibres'

1

Aitken, R. "The Manufacture of Viscose Rayon Fibres." Journal of the Society of Dyers and Colourists 99, no. 5-6 (October 22, 2008): 150–53. http://dx.doi.org/10.1111/j.1478-4408.1983.tb03681.x.

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Okamoto, A. "Specialized Rayon Fibres and a Case of Modification." Sen'i Kikai Gakkaishi (Journal of the Textile Machinery Society of Japan) 47, no. 4 (1994): P147—P151. http://dx.doi.org/10.4188/transjtmsj.47.4_p147.

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Elmest, David, and Ken de Vanet. "The effect of carbonization conditions on the properties of rayon-based carbon fibres." High Performance Polymers 5, no. 2 (April 1993): 161–73. http://dx.doi.org/10.1088/0954-0083/5/2/008.

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The effect of carbonization temperature on the properties of prewoven carbon fibre made from a rayon precursor is examined. Bulk composition is contrasted with surface elemental analysis (XPS) which shows that low carbonization temperatures (2300F, 1260C) produce a fibre with up to 15 and 5 at.% of oxygen and sodium respectively on the surface. At higher firing temperatures (up to 3000, 1649 C), the surface O and Na levels are significantly reduced and the measured fibre surface area declines from 50 m2 g-1 to under 5 ml g-'. Atomic force microscopy (AFM) was used to examine the surface detail of fibres at magnifications over 250000 times. AFM micrographs reveal that the fibre surface after carbonization at low temperatures is covered with a crust believed to be the char residue from tars released during the precarbonization stage. Surface analysis by Auger spectroscopy has confirmed the high oxygen and sodium content of the char material. Use of higher carbonization temperatures results in fibre surface properties which are generally regarded as preferable for use in ablative applications.

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Bohra, J. N., and R. K. Saxena. "Microporosity in rayon-based carbonized and activated carbon fibres." Colloids and Surfaces 58, no. 4 (October 1991): 375–83. http://dx.doi.org/10.1016/0166-6622(91)80216-b.

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Bairagi, N., M. L. Gulrajani, B. L. Deopura, and A. Shrivastava. "Dyeing of N-modified viscose rayon fibres with reactive dyes." Coloration Technology 121, no. 3 (May 2005): 113–20. http://dx.doi.org/10.1111/j.1478-4408.2005.tb00260.x.

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Harry, I. D., B. Saha, and I. W. Cumming. "Surface properties of electrochemically oxidised viscose rayon based carbon fibres." Carbon 45, no. 4 (April 2007): 766–74. http://dx.doi.org/10.1016/j.carbon.2006.11.018.

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CHEETHAM, R. C., P. R. BRIDGES, and D. C. PRATT. "Developments in the Colouring of Rayon and Acrylic Fibres for Carpets." Journal of the Society of Dyers and Colourists 81, no. 12 (October 22, 2008): 562–68. http://dx.doi.org/10.1111/j.1478-4408.1965.tb02631.x.

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Pan, Yuan Feng, and Hui Ning Xiao. "Rendering Rayon Fibres Antimicrobial and Thermal-Responsive via Layer-by-Layer Self-Assembly of Functional Polymers." Advanced Materials Research 236-238 (May 2011): 1103–6. http://dx.doi.org/10.4028/www.scientific.net/amr.236-238.1103.

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A thermal-responsive polymer was prepared by partially acetalyzing poly(vinyl alcohol) (PVA). The completely reversible polymer aggregation and dissolution occur above and below a low critical solution temperature (LCST) for the aqueous solution of the modified PVA. The partially acetalized PVA (APVA) with higher molecular weight and higher degree of acetalysis exhibited a lower LCST transition and was used as an anionic polymer for polymer complexation. Water-soluble polymer, cationic polyhexamethylene guanidine hydrochloride (CPHGH) with antimicrobial property, was also prepared. In conjunction with APVA, CPHGH created the unique antimicrobial polymer multilayers on the surfaces of rayon fibres via layer by layer (LbL) assembly. AFM images revealed that the particles generated by multilayers became larger after the material was treated at 60°C; while the roughness of the surfaces was increased as the layer number increased and then decreased. Moreover, antimicrobial tests also demonstrated that the rayon fiber assembled with (CPHGH/APVA) multilayers exhibited higher antimicrobial activity against E. coli and s. aureus.

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Huang, Zheng-Hong, Feiyu Kang, Yong-Ping Zheng, Jun-Bing Yang, and Kai-Ming Liang. "Adsorption Characteristics of Trace Volatile Organic Compounds on Activated Carbon Fibres at Room Temperature." Adsorption Science & Technology 20, no. 5 (June 2002): 495–500. http://dx.doi.org/10.1260/026361702320644770.

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The adsorption characteristics of volatile organic compounds (VOCs) on viscose rayon-based activated carbon fibres (ACFs) were investigated. ACFs with specific surface areas of 640 m2/g and 1460 m2/g were used to adsorb trace volatile organic compounds in nitrogen streams at atmospheric pressure at or near room temperature (25°C and 30°C). The experimental results showed that ACFs with different surface areas exhibited different dynamic adsorption behaviours at or near room temperature.

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Franciszczak, P., R. Merijs-Meri, K. Kalniņš, A. K. Błędzki, and J. Zicans. "Short-fibre hybrid polypropylene composites reinforced with PET and Rayon fibres – Effects of SSP and interphase tailoring." Composite Structures 181 (December 2017): 121–37. http://dx.doi.org/10.1016/j.compstruct.2017.08.075.

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Bairagi, N., M. L. Gulrajani, B. L. Deopura, and A. Shrivastava. "Dyeing of N-modified viscose rayon fibres with acid and metal-complex dyes." Coloration Technology 121, no. 6 (November 2005): 320–24. http://dx.doi.org/10.1111/j.1478-4408.2005.tb00376.x.

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Patel, B. V., and P. H. Dasondi. "Studies on Synthesis and Dyeing Preformance of Acid Dyes Based on 4,7-Dihydroxy-1,10-Phenanthroline-2,9-Dione." E-Journal of Chemistry 5, s1 (2008): 1033–36. http://dx.doi.org/10.1155/2008/436467.

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Some new azo acid dyes were prepared by coupling various diazotized acid components such as anthranilic acid, sulphanilic acid, laurent acid, peri acid, tobias acid, H-acid, J-acid, gamma acid, sulphotobias acid, 4-aminotoluiene-3-sulphonic acid, 5-sulpho- anthranilic acid, 2-naphthylamine-3,6,8-trisulphonic acid, bronner acid, metanilic acid and cleve acid with 4,7-dihydroxy-1,10-phenanthroline-2,9-dione. The dyes were characterized by elemental, IR and TLC analyses. Their dyeing performance as acid dyes has been assessed on viscose rayon, wool and cotton fibres.

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Patel, B. V., and P. H. Dasondi. "Studies on Synthesis and Dyeing Preformance of Acid Dyes Based on 4,7-Dihydroxy-3,8-di-α-naphthylazo-1,10-phenanthroline-2,9-Dione." E-Journal of Chemistry 4, no. 4 (2007): 559–62. http://dx.doi.org/10.1155/2007/741564.

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Some new azo acid dyes were prepared by coupling various diazotized acid components such as anthranilic acid, sulphanilic acid, laurentacid, peri acid, tobias acid, H-acid, J-acid, gamma acid, sulphotobias acid,4-aminotoluiene-3-sulphonic acid, 5-sulpho- anthranilic acid, 2-naphthylamine-3,6,8-trisulphonic acid, bronner acid, metanilic acid and cleve acid with 4,7-dihydroxy-3,8-di-α-naphthylazo-1,10-phenanthroline-2,9-dione. The dyes were characterized by elemental, IR and TLC analyses. Their dyeing performance as acid dyes has been assessed on viscose rayon, wool and cotton fibres.

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Mendes, Inês S. F., António Prates, and Dmitry V. Evtuguin. "Production of rayon fibres from cellulosic pulps: State of the art and current developments." Carbohydrate Polymers 273 (December 2021): 118466. http://dx.doi.org/10.1016/j.carbpol.2021.118466.

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15

Kang, Feiyu, Zheng-Hong Huang, Kai-Ming Liang, Jun-Bing Yang, and Hui Wu. "Adsorption of Volatile Organic Compounds in Nitrogen Streams on Oxidized Activated Carbon Fibres." Adsorption Science & Technology 19, no. 5 (June 2001): 423–33. http://dx.doi.org/10.1260/0263617011494286.

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Viscose rayon-based activated carbon fibres (ACFs) with low and high specific surface areas were treated with conc. HNO3, 30 wt% H2O2 and air at different temperatures. The pore textures and surface chemistries of the samples were characterized by nitrogen adsorption at 77 K and X-ray photoelectron spectroscopic (XPS) methods. The adsorption of traces of volatile organic compounds (VOCs), i.e. benzene and methyl ethyl ketone (MEK), in nitrogen streams on the samples wwa measured by a gravimetric method. The results showed that the surface oxygen complexes and pore textures of all the oxidized ACFs were modified and differed depending on whether oxidation had been conducted under gaseous or solution conditions. ACFs with different specific surface areas possessed different adsorption characteristics towards VOC vapours after subjection to oxidation treatment.

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Müller, M., C. Riekel, R. Vuong, and H. Chanzy. "Skin/core micro-structure in viscose rayon fibres analysed by X-ray microbeam and electron diffraction mapping." Polymer 41, no. 7 (March 2000): 2627–32. http://dx.doi.org/10.1016/s0032-3861(99)00433-4.

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Iyer, S. R. Sivaraja, and K. Subramanian. "The Influence of Electrolytes on the Adsorption of Chlorazol Sky Blue FF on Viscose Rayon Fibres at Different Temperatures." Journal of the Society of Dyers and Colourists 96, no. 4 (October 22, 2008): 185–88. http://dx.doi.org/10.1111/j.1478-4408.1980.tb03522.x.

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18

Thakare, Vikash B., Nagesh K. Tripathi, Virendra V. Singh, Manisha Sathe, and Beer Singh. "Activated Carbon Fabric: An Adsorbent Material for Chemical Protective Clothing." Defence Science Journal 68, no. 1 (December 18, 2017): 83. http://dx.doi.org/10.14429/dsj.68.11734.

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<p class="p1">Activated carbon fabric or fiber (ACF) is a novel carbonaceous material with exceptionally high adsorption rate and larger adsorption capacity, that has emerged as a rising star in the field of adsorbents. ACF has many advantages over other commercial porous storage materials such as granular activated carbon and powdered activated carbon in terms of adsorption capacity, well defined microporous structure, stability, flexibility and ease of lamination to various substrates. In the last few years, activated carbon fabrics have gained greater choice of interest for use as an adsorbent material in several fields including nuclear, biological and chemical (NBC) protection suit. Viscose rayon, acetate, polyacrylonitrile, pitch, and phenolic based materials are mainly used as precursors for preparation of ACF. ACF or fibres are generally prepared by process comprising stabilisation, carbonisation and activation of precursors. Reviews recent advances and developments in the field of ACF and their utility as an adsorbent material in various fields including NBC scenario. ACF with unmatchable pore structure and surface characteristics at present, with continued innovations and attention to its key challenges, it is expected that ACF will play a pivotal role in diverse environmental, defence<em>, </em>and civil applications.</p>

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Faoagali, Joan. "‘Swabs’ then and now: cotton to flocked nylon." Microbiology Australia 31, no. 3 (2010): 133. http://dx.doi.org/10.1071/ma10133.

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Microbiological sample collections using cotton-tipped swabs (with or without serum), Dacron?, rayon and calcium alginate, with shafts of wood, plastic and various thicknesses and types of metal have all been used over the years. The swabs have been contained in glass or plastic tubes with and without various types of transport media. Swabs are an easy and popular method of sample collection, although microbiology laboratories traditionally prefer tissue, body fluids or aspirates ahead of swabs. As microbiology laboratories increasingly adopt near patient testing and molecular detection methods to reduce test turnaround times, new sample collection methods are required to maximise the sensitivity of these expensive tests and reduce the possibility of failed tests due to sample inhibitors or poor collection techniques. Flocked nylon swabs have been developed by Copan in the last decade and are produced using a technique of spraying nylon fibres onto a rigid core. This has the effect of increasing the surface area for sample collection and also provides easy elution of the collected material. These swabs are polymerase chain reaction (PCR) inhibitor-free, RNase-negative and DNase-free and there is in addition a range of flocked swabs, specifically intended for forensic DNA investigations that are certified human DNA-free. The advantages, disadvantages and appropriate use of swab collections for microbial detection in the 21st century will be presented.

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Grossemy, Simon, Peggy P. Y. Chan, and Pauline M. Doran. "Electrical stimulation of cell growth and neurogenesis using conductive and nonconductive microfibrous scaffolds." Integrative Biology 11, no. 6 (June 1, 2019): 264–79. http://dx.doi.org/10.1093/intbio/zyz022.

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Abstract The effect of exogenous electrical stimulation on cell viability, attachment, growth, and neurogenesis was examined using PC12 cells in microfibrous viscose-rayon scaffolds immersed in culture medium. The scaffolds were applied either in their nonconductive state or after coating the fibres with 200 nm of gold to give a scaffold sheet resistivity of (13 ± 1.3) Ω square−1. The cells were treated for 12 days using direct current electrical stimulation of 2 h per day. No cytotoxic effects were observed when up to 500 mV (8.3 mV mm−1) was applied to the scaffolds without gold, or when up to 100 mV (1.7 mV mm−1) was applied to the scaffolds with gold. Compared with unstimulated cells, whereas electrical stimulation significantly enhanced cell growth and attachment in the nonconductive scaffolds without gold, similar effects were not found for the conductive scaffolds with gold. Neural differentiation in the presence of nerve growth factor was improved by electrical stimulation in both scaffolds; however, neurite development and the expression of key differentiation markers were greater in the nonconductive scaffolds without gold than in the scaffolds with gold. Application of the same current to scaffolds with and without gold led to much higher levels of neurogenesis in the scaffolds without gold. This work demonstrates that substantial benefits in terms of cell growth and neural differentiation can be obtained using electric fields exerted across nonconductive microfibrous scaffolds, and that this approach to electrical stimulation can be more effective than when the stimulus is applied to cells on conductive scaffolds.

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Basit, Abdul, Wasif Latif, Sajjad Ahmad Baig, and Ali Afzal. "The Mechanical and Comfort Properties of Sustainable Blended Fabrics of Bamboo With Cotton and Regenerated Fibers." Clothing and Textiles Research Journal 36, no. 4 (June 18, 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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Tsuiki, Hisanaga, Etsuko Masuda, Toshiki Koyama, Kenji Hanabusa, Hirofusa Shirai, Nagao Kobayashi, Naoki Minamide, Yoshito Komatsu, and Tokuji Yokozeki. "Functional metallomacrocycles and their polymers: 34. Kinetics and mechanism of the biomimetic decomposition of hydrogen peroxide catalysed by heterogeneous octacarboxyphthalocyaninato iron(III) supported on amorphous enriched rayon staple fibres." Polymer 37, no. 16 (August 1996): 3637–42. http://dx.doi.org/10.1016/0032-3861(96)00207-8.

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Moon, Sook Young, Myung Soo Kim, and Yun Soo Lim. "Preparation and Characterization of Chemical Activated Fibers on Various Carbon Fibers." Materials Science Forum 510-511 (March 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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Trinh, Hue Thi Kim, and Mai Hương Bùi. "The Improving properties of Viscose fabric by water repellent finish." Science & Technology Development Journal - Engineering and Technology 4, no. 1 (March 13, 2021): first. http://dx.doi.org/10.32508/stdjet.v4i1.788.

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Viscose as cellulosic origin, the cheapest of all cellulosic fabrics could be the best alternative. Viscose is manufactured from regenerated cellulose. In order to manufacture viscose, pulp of bamboo is treated with aqueous sodium hydroxide to form alkali cellulose. This alkali cellulose is then treated with carbon disulfide to form sodium cellulose xanthate. The xanthate is then dissolved in aqueous sodium hydroxide and allowed to depolymerize. After depolymerization, rayon fiber is produced from the ripened solution. Viscose is primarily employed in apparels, upholstery fabric, industrial clothing, and medical hygiene. Apparels, upholstery fabric, and industrial clothing segments account for key share of the viscose market. The medical hygiene segment is anticipated to expand during the forecast period. Demand for viscose fiber is anticipated to increase significantly in the near future due to the rise in global population, increase in standard of living, and growth in disposable income. Viscose is an eco-friendly product; thus, increase in awareness about eco-friendly products and decrease in production of cotton are estimated to augment the demand for viscose fiber. Viscose fabric exhibits some similar properties compared to cotton except its poor wet strength due to higher moisture regain. In this study, chemical finishes by different cross-linkers were applied to improve the wet strength of the viscose fabric. For this purpose, water repellent finishes were applied. Water repellent finish helped in reducing the molecular barrier around the individual fibres that lowered the surface tension of the fabric. It reduces the absorbency of viscose fabric hence leads to higher wet strength. Therefore, the treated viscose fabric exhibited better wet strength after applying water repellent finishes on it. Scanning electron microscope (SEM) was used to examine the surface of the fabric treated with chemicals. Tensile strength of viscose was increased 24.6%.

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Rabe, Richard L., Billie J. Collier, and John R. Collier. "Processability and Properties of a Rayon/Nylon Composite Fiber." Textile Research Journal 58, no. 12 (December 1988): 735–42. http://dx.doi.org/10.1177/004051758805801208.

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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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Di, Youbo, Guoqiang Long, Huiqin Zhang, and Qingshan Li. "Preparation and Properties of Viscose Rayon/O-carboxymethyl Chitosan Antibacterial Fibers." Journal of Engineered Fibers and Fabrics 6, no. 3 (September 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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Perrin, Muriel, Cyril Poupon, Bernard Rieul, Patrick Leroux, André Constantinesco, Jean-François Mangin, and Denis LeBihan. "Validation of q -ball imaging with a diffusion fibre-crossing phantom on a clinical scanner." Philosophical Transactions of the Royal Society B: Biological Sciences 360, no. 1457 (May 29, 2005): 881–91. http://dx.doi.org/10.1098/rstb.2005.1650.

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Magnetic resonance (MR) diffusion imaging provides a valuable tool used for inferring structural anisotropy of brain white matter connectivity from diffusion tensor imaging. Recently, several high angular resolution diffusion models were introduced in order to overcome the inadequacy of the tensor model for describing fibre crossing within a single voxel. Among them, q -ball imaging (QBI), inherited from the q -space method, relies on a spherical Radon transform providing a direct relationship between the diffusion-weighted MR signal and the orientation distribution function (ODF). Experimental validation of these methods in a model system is necessary to determine the accuracy of the methods and to optimize them. A diffusion phantom made up of two textile rayon fibre (comparable in diameter to axons) bundles, crossing at 90°, was designed and dedicated to ex vivo q -ball validation on a clinical scanner. Normalized ODFs were calculated inside regions of interest corresponding to monomodal and bimodal configurations of underlying structures. Three-dimensional renderings of ODFs revealed monomodal shapes for voxels containing single-fibre population and bimodal patterns for voxels located within the crossing area. Principal orientations were estimated from ODFs and were compared with a priori structural fibre directions, validating efficiency of QBI for depicting fibre crossing. In the homogeneous regions, QBI detected the fibre angle with an accuracy of 19° and in the fibre-crossing region with an accuracy of 30°.

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

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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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Biantoro, Reynaldo, and Chandra Apriana Purwita. "Review: Pembuatan Serat Rayon." JURNAL SELULOSA 9, no. 02 (December 31, 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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Duan, Ya Feng, Jiang Wei Yao, and Yue Zhang. "Development on the Multi-Component Blending Yarn of Hemp/ Anti Bacteria Fine Rayon/Micro-Porous Polyester Fiber." Advanced Materials Research 317-319 (August 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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Collier, J. R., Wei Ying Tao, and Billie J. Collier. "Bending of Internally Reinforced Rayon Fibers." Journal of the Textile Institute 82, no. 1 (January 1991): 42–51. http://dx.doi.org/10.1080/00405009108658735.

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Mlynar, Michèle. "Qualitative Evaluation of Nonwoven Samples Using DuPont Fiber Identification Stain No. 4 and Microscopy." International Nonwovens Journal os-9, no. 2 (June 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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Easson, Michael, Andres Villalpando, and Brian D. Condon. "Absorbent Properties of Carboxymethylated Fiber, Hydroentangled Nonwoven and Regenerated Cellulose: A Comparative Study." Journal of Engineered Fibers and Fabrics 12, no. 4 (December 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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Dayan, A. "Man-made Mineral Fibres and Radon." Journal of Clinical Pathology 42, no. 12 (December 1, 1989): 1315. http://dx.doi.org/10.1136/jcp.42.12.1315-d.

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Nakamura, Teisaku, Hatsue Yoshida, Toshihiko Amano, and Tadahiro Fujita. "SURFACE STRUCTURE FORMATION OF CUPRAAMMONIUM RAYON FIBERS." Sen'i Gakkaishi 46, no. 1 (1990): 21–25. http://dx.doi.org/10.2115/fiber.46.21.

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Collier, Billie J., John R. Collier, and Jean E. McDonald. "Abrasion Resistance of Rayon/Nylon Composite Fibers." Home Economics Research Journal 18, no. 2 (December 1989): 126–32. http://dx.doi.org/10.1177/1077727x8901800202.

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Wakabayashi, Taiga, Hiroshi Yagi, Kazuki Tajima, Kohei Kuroda, Masahiro Shinoda, Minoru Kitago, Yuta Abe, et al. "Efficacy of New Polylactic Acid Nonwoven Fabric as a Hemostatic Agent in a Rat Liver Resection Model." Surgical Innovation 26, no. 3 (March 21, 2019): 312–20. http://dx.doi.org/10.1177/1553350619833582.

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Background. During minimally invasive surgery, efficient and nontoxic hemostats are important for difficult to access bleeding areas. Polylactic acid is an ecofriendly hemostatic agent and we aimed to evaluate the efficacy of a polylactic acid nonwoven fabric (PLAF) developed by Toray Industries, Inc, on liver hemostasis in a preclinical study. Materials and Methods. PLAF consists of both 1-µm diameter fibers and 100-µm diameter beaded fibers. Four rats were used, and 2 trough-shaped resections of the liver parenchyma were performed (n = 8 lobes). Immediately after the resection, PLAF (PLAF group: n = 4 lobes) or rayon gauze (Rayon group: n = 4 lobes) were applied on the resected plane and compressed manually. We compared the mean time to hemostasis and blood loss per lobe, as well as histological findings between the groups. Results. The PLAF group had a significantly shorter bleeding time ( P = .006), and showed lower blood loss compared with the Rayon group ( P = .076). Histopathological evaluation showed a large amount of beads on the liver surface in the PLAF group. Aggregated red blood cells evident by electron microscopy and von Willebrand factor immunofluorescence were seen surrounding the beads. The PLAF group showed significantly greater von Willebrand factor expression than the Rayon group ( P = .004). Discussion. This new PLAF showed superior outcomes thanks to its unique characteristic of forming beaded nanofibers, and it has the potential to be an efficient hemostat in minimally invasive surgery in the human body.

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Wang, Guang Xue, Hao Han, Li Wei Li, Hai Yu Quan, Yan Ping Shi, Wen Zhen Qin, Ping Lu, and Qi Lin Wu. "SEM and AFM Studies on the Surface and Cross Section Morphology of Rayon-Based Activated Carbon Fibers." Materials Science Forum 689 (June 2011): 413–18. http://dx.doi.org/10.4028/www.scientific.net/msf.689.413.

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The surface and cross section morphology of rayon-based carbon fibers (RCF) and the resulting rayon-based activated carbon fibers (RACF) were investigated through scanning electron microscopy and atomic force microscopy. It was found that the surface of RCF exhibited grooves and striations with the width ranging from 30 to 90 nm, and the striation distribution was about 25 bars per µm around the circumference. While on the RACF, lots of pores emerged on the surface and superficial cross section (about 1 ~ 2 µm to the surface), namely, the external section was porosity but the interior section was close-grained. It was detected that the pore sizes ranged from 50 to 550 nm and the approximate pore distribution was 10 pores in 1×1 µm2. Furthermore, the walls of pores were not smooth but consisted of continuous grains with the diameters about 30 nm.

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Tallian, Claudia, Vanessa Rumpler, Lukas Skopek, Hannes Russmayer, Matthias G. Steiger, Robert Vielnascher, Simone Weinberger, Alessandro Pellis, Sara Vecchiato, and Georg M. Guebitz. "Glutathione from recovered glucose as ingredient in antioxidant nanocapsules for triggered flavor delivery." Journal of Materials Chemistry B 7, no. 25 (2019): 3958–69. http://dx.doi.org/10.1039/c9tb00473d.

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Glucose recovered via enzymatic hydrolysis of rayon fibers was used for glutathione production by S. cerevisiae. Glutathione was used in combination with HSA and silk fibroin for ultrasound assisted nanocapsules production. Triggered release of flavor substances and antioxidant properties of the nanocapsules was demonstrated.

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Felix, Johan M., C. M. Gilbert Carlsson, and Paul Gatenholm. "Adhesion characteristics of oxygen plasma-treated rayon fibers." Journal of Adhesion Science and Technology 8, no. 2 (January 1994): 163–80. http://dx.doi.org/10.1163/156856194x00131.

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Zuigyo, Yugo, and Masahiko Yamamoto. "Basic Study of PK Fiber Tire Cord3." Tire Science and Technology 35, no. 4 (December 1, 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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AYAKTA, DUYGU YAVUZKASAP, NAZLI ÇAĞLAR CİNPERİ, and HAKAN ÖZDEMİR. "Investigating the effect of self-cleaning treatment on the air permeability, stain removal and water repellency properties of functionalized double jacquard woven upholstery fabrics." Industria Textila 70, no. 06 (December 12, 2019): 512–18. http://dx.doi.org/10.35530/it.070.06.1483.

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Self-cleaning is the important and required function for the upholstery fabrics. At this research, which was not studied in the references, nano TiO2 coating was appliqued on 18 double faced woven fabrics produced with jacquard weaving technique with three different weft density, two different raw materials of warp yarns that are polyester and rayon, three different face weave pattern under the same conditions by using sol-gel method. All fabrics were stained with the same amount of coffee. Self-cleaning efficiency of the applied fabrics were tested at spectrophotometer by using K/S (Colour/Strength) values after waiting 6, 12 and 24 hours under artificial sunlight and stain removal ratios were calculated. The effects of the fibre type, weft setting and weave pattern on the air permeability of upholstery fabrics were investigated by variance analysis by means of Minitab 17.0. TiO2 application caused air permeability reduction of 18‒40% in polyester warp fabrics and 30‒47% in rayon warp fabrics. It was seen that self-cleaning property can be got at double faced polyester/cotton and rayon/cotton fabrics by using nano TiO2. After 24 hours sunlight exposure, the average stain removal rates were found as 74.8% for polyester warp fabrics and 66.7% for rayon warp fabrics. Also, it has been observed that TiO2 application imparts hydrophobic properties to all rayon and polyester warp fabrics.

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TAKEUCHI, Ichiro, and Tomoki KOSEKI. "Surface Treatment on Fibers. Functional Rayon Fibers: Potential Solutions to Environmental Issues." Journal of the Surface Finishing Society of Japan 46, no. 11 (1995): 1013–16. http://dx.doi.org/10.4139/sfj.46.1013.

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Chan, MK, and N. Lau. "Optimal Reuse of Cuprammonium Rayon Hollow-Fibre Dialyzers." International Journal of Artificial Organs 12, no. 4 (April 1989): 223–28. http://dx.doi.org/10.1177/039139888901200404.

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The optimal number of times a hollow-fibre cuprammonium rayon (Terumo TAF) dialyzer could be used was determined in twelve patients. Each dialyzer was reused six times. There was a highly significant decrease in neutrophil count (46.9± 6.9%, mean ± s.e.m.), platelet count (9.6± 3.8%, mean ± s.e.m.) and serum C3 concentration (10.25± 2.4%, mean ± s.e.m.) 30 minutes after the commencement of dialysis. The intensity of these changes decreased with the reuse of the dialyzers up to the fourth time. There was a small, but significant increase in serum β2-microglobulin concentrations after a 6-hour dialysis. The difference between pre- and post-dialysis serum β2-microglobulin concentrations appeared to be greater during the 5th and the 6th use (18.8% and 20.5% vs 5.0% during the first use). The clearance rates of urea and creatinine showed a trend to decrease from the fourth use onwards and the ultrafiltration coefficient was significantly reduced from the third use (8.5± 4.0 mean ± s.e.m.) onwards so that at the sixth use it was only 75.8± 4.8%, (mean ± s.e.m.) of the value at the first use. It is concluded that the optimal number of uses a cuprammonium rayon hollow-fibre dialyzer can be put to is four.

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Shamsuddin, Siti-Ros, Koon-Yang Lee, and Alexander Bismarck. "Ductile unidirectional continuous rayon fibre-reinforced hierarchical composites." Composites Part A: Applied Science and Manufacturing 90 (November 2016): 633–41. http://dx.doi.org/10.1016/j.compositesa.2016.08.021.

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Longui, Eduardo L., Ana T. D. Galão, Kishore S. Rajput, and Antônio C. G. de Melo. "Anatomical investigation of root, stem and branch wood in 10-year-old Inga laurina in the context of anatomical adaptation to hydraulic and mechanical stresses." Anales de Biología, no. 40 (March 7, 2018): 31–39. http://dx.doi.org/10.6018/analesbio.40.04.

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La madera varía entre las especies, desde la médula hasta la corteza, desde las raíces hasta la corona dentro de la misma planta, para garantizar la seguridad y la eficiencia hidráulica. La heterogeneidad de la madera de Inga laurina (Sw.) Willd. es aquí investigada, siendo una especie que prospera bien en todos los bosques brasileños importantes. La madera de tallo de I. laurina poseía vasos estrechos; fibras de paredes gruesas; rayos más anchos, altos y en mayor frecuencia, características que proporcionan ajustes hidráulicos y mecánicos. Las fibras de paredes gruesas y menos parénquima, en comparación con la raíz, brindan la fuerza suficiente para apoyar la corona grande. Una mayor proporción de células de parénquima en las raíces da como resultado una gran capacidad de almacenamiento de almidón, que es importante para la recuperación de los brotes después del daño por fuego, común en el Cerrado. Wood varies between species, from pith to bark, roots to crown within the same plant to ensure hydraulic safety and efficiency. Inga laurina (Sw.) Willd. is investigated herewith for the structural heterogeneity of the wood, since this species thrives well in all major forests of Brazil. I. laurina stem wood possessed narrow vessels; thick walled fibres; wider, taller and higher frequency of rays, features that provide hydraulic and mechanical adjustments. Thick walled fibres and less parenchyma as compared to root provide enough strength to stem to support the large crown. Higher proportion of parenchyma cells in roots results in a high storage capacity for starch, which is important for the shoot recovery after fire damage, common in the Cerrado.

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Vu, Le Hoang, Huu Son Nguyen, Quoc Khanh Dang, Van Cuong Pham, and Thai Hung Le. "The Effect of Oxidation Temperature on Activating Commercial Viscose Rayon-Based Carbon Fibers to Make the Activated Carbon Fibers (ACFs)." Materials Science Forum 985 (April 2020): 171–76. http://dx.doi.org/10.4028/www.scientific.net/msf.985.171.

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In this work, commercial Viscose (cellulosic based precursor) rayon-based carbon fibers were oxidized to make activated carbon fibers (ACFs). Carbon fibers were made from Viscose fibers in carbonization process at 1200°C. The ultimate carbon fibers possessed carbon content above 94 mass% and fiber dimension about 8 mm. These fibers were activated to make ACFs by oxidizing gas such as steam of carbon dioxide. The experiments were conducted at temperature ranged from 800°C to 900°C with carbonic steam’s flow of 3 l.min-1. The vaporous benzene adsorbability of activated carbon fibers was then measured by Mark Bell method. The adsorbability (a) and specific surface area (ABET) of ACFs were determined. The properties of the produced ACFs were investigated and analyzed by SEM and TEM imaging. The results showed that obtained fibers have maximum benzene adsorbability of 4.58 mmol.g-1 and BET surface area reached 1357 m2.g-1. These activated carbon fibers were able to use for toxic chemical prevention equipment.

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Choi, Sang Seun, and Soon Hong Lee. "Thermal Characteristics Analysis of Pre-Treated Rayon Fibers for Preparing Activated Carbon Fibers." Journal of the Korean Society of Safety 29, no. 4 (August 31, 2014): 61–72. http://dx.doi.org/10.14346/jkosos.2014.29.4.061.

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TAKAHASHI, TETSUYA, YAYOI SHOJI, OSAMU INOUE, YASUYUKI MIYAMOTO, and KOH TOKUDA. "Antibacterial Properties of Rayon Fibers Containing Titanium Oxide Photocatalyst." Biocontrol Science 9, no. 3 (2004): 51–60. http://dx.doi.org/10.4265/bio.9.51.

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Letcher, Trevor M., and Nothando S. Lutseke. "A closer look at cotton, rayon, and polyester fibers." Journal of Chemical Education 67, no. 5 (May 1990): 361. http://dx.doi.org/10.1021/ed067p361.

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Journal articles on the topic 'Rayon des fibres'

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