Relevant bibliographies by topics / Dye colour absorbency

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  1. Journal articles
  2. Dissertations / Theses

Academic literature on the topic 'Dye colour absorbency'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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Journal articles on the topic "Dye colour absorbency"

1

Yam, L. Y., L. L. Lau, C. W. Kan, et al. "The Influence of Fibre Content of Knitted Fabric on the Ultraviolet Radiation Protection Property." Advanced Materials Research 550-553 (July 2012): 3241–44. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.3241.

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In this study, sulphur dye was used for dyeing 100% cotton knitted fabric and the effect of dye concentration and colour shade on ultraviolet protection factor (UPF) was discussed. The results indicated that the UVR absorbency of sulphur dye was not satisfactory. Generally speaking, the higher the dye concentration, the darker the shade of fabric. Nevertheless, it did not affect the UPF of fabric if the absorbency of the selected dye was ineffective.
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Au, C. H., O. Y. Shum, C. W. Kan, et al. "The Impact of Dyed Knitted Fabric on the Ultraviolet Radiation Protection Propery." Advanced Materials Research 550-553 (July 2012): 3245–48. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.3245.

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In this study, sulphur dye was used for dyeing 100% cotton knitted fabric and the effect of dye concentration and colour shade on ultraviolet protection factor (UPF) was discussed. The results indicated that the UVR absorbency of sulphur dye was not satisfactory. Generally speaking, the higher the dye concentration, the darker the shade of fabric. Nevertheless, it did not affect the UPF of fabric if the absorbency of the selected dye was ineffective.
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3

Borisova, Anna, and Skaidrīte Reihmane. "A Study of Absorption Properties Improvement of Cotton Blended Fabric." Key Engineering Materials 559 (June 2013): 13–18. http://dx.doi.org/10.4028/www.scientific.net/kem.559.13.

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Successful results of textile materials finishing process in order to gain desired properties to the fabric according to customers’ demands mainly depend on properly-carried pre-treatment stages. The present study covers twill weave cotton/polyester fabric’s modification in alkaline medium at different temperatures and treatment durations through exhaustion (hot and cold treatment) and pad-steam process. An influence of the reduction agent addition was ascertained. Weight loss, water absorbency, vertical wicking, dye uptake, colour measurements, surface morphology and psysicomechanical characteristics were determined. Samples and recommendations of optimal alkaline treatment technologies are developed.
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Ganguly, Debojyoti, Chanchal Mondal, and Asim Kumar Roy Choudhury. "Part 1." Research Journal of Textile and Apparel 21, no. 3 (2017): 219–38. http://dx.doi.org/10.1108/rjta-05-2017-0016.

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Purpose In recent times, wool- and silk-blended fabrics are popular for creating glamourous products. Silk is blended to wool for creating more lustrous effect and to impart strength; on the other hand, wool is responsible for resilience, softness and warmth properties. Chemically both the fibres are protein-based, but the amount of amino acids is different. Due to this, the dye absorption behaviours of the two fibres from the same dye-bath are different. Wool is become darker than the silk fibre, if both the fibres are dyed together in a single bath dyeing process. Design/methodology/approach Here the wool fibres are first pre-treated with a commercial synthetic tanning agent (syntan) Mesitol HWS at three different pH values of 2.2, 3.2 and 4.2 and at three different concentrations: 5, 10 and 15 per cent. Then the syntan pre-treated wool fibres are dyed together with silk fibres maintaining the blend ratio as 80:20 by Telon Red MR, Telon Yellow M4GL and Telon Blue MRLW with sodium sulphate at three different concentrations of 10, 20 and 30 per cent. Findings The dye absorbency of the syntan-treated wool fibres decreased with increase in syntan concentration, whereas the colour strength of silk fibres increased. The resist effectiveness of wool fibres is increased from 6 to 59 per cent with increase of syntan concentration. So after the dyeing process, the colour strength of syntan-treated wool fibres are almost same with the colour strength of silk fibres. The washing fastness of the samples is improved, and wash fastness behaviour of both wool and silk fibres is almost same. Originality/value This paper gives an idea about the one bath dyeing process of wool- and silk-blended fabrics to achieve solid dyeing effect.
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Thana Singam, Rupashinii A/P, Noraini Bt Marsi, Azrin Hani Bt Abdul Rashid, et al. "A Review on Characteristics and Potential Applications of Henna Leaves (Lawsonia inermis)." Journal of Computational and Theoretical Nanoscience 17, no. 2 (2020): 603–12. http://dx.doi.org/10.1166/jctn.2020.8741.

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This review paper reports the studies available on the characteristics and applications of the henna (Lawsonia inermis) as a natural dye. Textile materials are mainly from synthetic dyes and fibers which are not renewable and not biodegradable. Around 30 million of tonnes was estimated for the global consumption of textiles and was expected to grow up to 3% per annum while 70,000 tonnes of dyes were released to the environment. The population of people who will have allergic to the chemicals will grow up to 60% by year 2020 which was stated in business week. Apart from that, natural dyes can be extracted and process from various sources such as plants, leaves, minerals, roots, barks and insect sections. Plants that was found in the world approximately 20% were for the pharmaceutical or biological test and new antibiotics were introduced in the market are obtain from natural or semi-synthetic resources. For the biological test, henna oil was tested against Staphylococcus aureus which was 870 μg/mL and Neisseria gonorrhoeae was 87 μg/mL respectively while henna leaves extraction using methanol of 95% showed significant in-vitro antihyperglycemic effect. Chemical contains in the henna are carbohydrates as 33.62%, fibers as 33.5%, fatty oils as 10–11% and essential oil as 0.01–0.02%. Moreover, the good UV absorbency for the henna dyed cotton was at 900 °C for 60 minutes and the colour fastness for the fabric which was dyed with henna is 4 which is good. Henna dye has slightly negative charge for the higher pH 9 for the washing fastness. The optimize condition for the pre-mordant is 4% for the copper sulphate (CuSO4) for cotton with the extraction of henna leaves. Furthermore, the optimum condition for the henna to remove lead Pb (II) from wastewater are pH 6, contact time is 80 minutes, 10 ppm for the initial metal concentration and 0.75 g/L for adsorbent dosage.
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6

Zambrano, Judith, Sagrario Briceño, Clara Mendez, and Eliseo Castellano. "Response of Mango Fruit to Potassium Permanganate as an Ethylene Absorbent during Storage." HortScience 31, no. 4 (1996): 638c—638. http://dx.doi.org/10.21273/hortsci.31.4.638c.

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Mango fruit of `Palmer' and `Keitt' were harvested at the preclimacteric stage. An inexpensive ethylene absorbent was made by mixing aqueous KMnO4 with vermiculite and silicagel as support material. Fruits were treated with the mixture of vermiculite–KMnO4 and silicagel–KMnO4 as ethylene absorbents and stored at 10 and 15°C for 18 days. Fruits were evaluated for skin and pulp color, total soluble solids, titratable acidity and weight loss at interval of 3 days. Ethylene absorbents had no significant effect on skin color parameters (lightness, hue, and chroma). However differences due to ethylene absorbents and temperature storage were evident on pulp color parameters. Soluble solids content and titratable acidity were affected by ethylene absorbent and temperature storage. The percent of weight loss increased with temperature and with duration of storage.
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7

Knolle, Erich, Wolfgang Linert, and Hermann Gilly. "Using Amsorb to Detect Dehydration of CO2Absorbents Containing Strong Base." Anesthesiology 97, no. 2 (2002): 454–59. http://dx.doi.org/10.1097/00000542-200208000-00024.

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Background Because Amsorb changes color when it dries, the authors investigated whether Amsorb combined with different strong base-containing carbon dioxide absorbents signals dehydration of such absorbents. Methods Five different carbon dioxide absorbents (1,330 g) each topped with 70 g of Amsorb were dried in an anesthesia machine (Modulus CD, Datex-Ohmeda, Madison, WI) with oxygen (Amsorb layer at the fresh gas inflow site). As soon as a color change was detected in the Amsorb, the authors tested the samples for a change in weight and carbon monoxide formation from 7.5% desflurane or 4% isoflurane. In a different experiment with the five absorbents, Amsorb was layered at the drying gas outflow site. In further experiments, the authors tested for a color change in Amsorb from drying and rehydrating and from drying with nitrogen. Finally, they dried a mixture of Amsorb and 1% NaOH and examined it for color change. Results In the experiments with Amsorb layered at the inflow, the Amsorb changed color when the water content of the samples was only marginally reduced (to a mean 13.6%), and no carbon monoxide formed. With Amsorb layered at the outflow, it changed color when the mean water content of the samples was reduced to 8.8%, and carbon monoxide formation was detected to varying degrees. The color change was independent of the drying gas and could be reversed by rehydrating. Adding NaOH to Amsorb prevented a color change. Conclusions Dehydration in strong base-containing absorbents can reliably be indicated before carbon monoxide is formed when Amsorb is layered at the fresh gas inflow. The authors assume that the indicator dye in Amsorb changes color on drying because of the absence of strong base in this absorbent.
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8

Mohammed, Noor A., Abeer I. Alwared, and Mohammed S. Salman. "Photocatalytic Degradation of Reactive Yellow Dye in Wastewater using H2O2/TiO2/UV Technique." Iraqi Journal of Chemical and Petroleum Engineering 21, no. 1 (2020): 15–21. http://dx.doi.org/10.31699/ijcpe.2020.1.3.

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In the present study, advanced oxidation treatment, the TiO2 /UV/H2O2 process was applied to decolorisation of the reactive yellow dyes in aqueous solution. The UV radiation was carried out with a 6 W low-pressure mercury lamp. The rate of color removal was studied by measuring the absorbency at a characteristic wavelength. The effects of H2O2 dosage, dye initial concentration and pH on decolorisation kinetics in the batch photoreactor were investigated. The highest decolorisation rates were observed (98.8) at pH range between 3 and 7. The optimal levels of H2O2 needed for the process were examined. It appears that high levels of H2O2 could reduce decolorisation by scavenging the *OH. The color degradation rate decreases as the dye concentration increases. The rate coefficient (k=0.0319 min-1) of degradation, follows the pseudo-first-order kinetics.
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9

Ding, Chun Yan, Lan Wang, Jun Xiong Lin, and Duan Ni. "Application of TEG Replacing Urea in Silk Printing with Reactive Dyes." Advanced Materials Research 175-176 (January 2011): 691–95. http://dx.doi.org/10.4028/www.scientific.net/amr.175-176.691.

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In order to resolve the problem of water pollution owing to using a large number of urea in silk printing with reactive dyes, TEG (Triethylene glycol/3, 6-dioxaoctane-1/8-diol) was used to replace the urea. The effects of TEG on the performance of monochromic and combination printed fabrics were studied through testing K/S values (color depth) and Delta E (color differences) of printed fabrics. Meanwhile, the effect of TEG and urea on the solubility of reactive dye and the moisture absorbency of silk fabric were compared by testing the solubility of reactive dyes and the diameter of silk fiber respectively. The results indicated that the best replacement ratio of TEG to urea was 75%.
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10

Li, Jun Ping, Wei Min Zhang, and Jia Ling Pu. "A Photometric Method for Measuring Photoacid Generator Efficiencies Using Rhodamine B as Acid Sensor in Thin Polymer Films." Key Engineering Materials 373-374 (March 2008): 686–89. http://dx.doi.org/10.4028/www.scientific.net/kem.373-374.686.

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This paper reported a novel method to measure photoinduced acid generation in polymer films, which were widely used in microlithography. The method employed Rhodamine B (RB) as acid sensor due to its changes in color and uv-vis absorbency in acidic condition. The property of Rhodamine B was examined in hydrochloric and trifluoromethyl sulfonic acids, and the standard working curves in thin polymer film were set up, which indicated the relationship of acid concentration and Rhodamine B’s relative peak absorption ("ABS). In this case, the difference in absorbency could reflect the different amounts of acid generated. According to these standard working curves, we can calculate the efficiency of photoacid generator (PAG). This method has advantage over existing method in measuring the efficiency of photoacid generator in solution, because it eliminated the influence of solvents.
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Dissertations / Theses on the topic "Dye colour absorbency"

1

Luo, M. R. "New colour-difference formulae for surface colours." Thesis, University of Bradford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372193.

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