Fibres related to cellulose

Hearle, J. W. S.; Woodings, Calvin

doi:10.1533/9781855737587.156

Cited by 11 publications

(9 citation statements)

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“…However, as the polymers utilised in both CA and CTA are derivatives of cellulose (ie esters of different degrees of substitution, II : CA 66–84% R = ‐OH, ~26–34% R = ‐OCH 3 ; CTA 100% R = ‐OCH 3 ), the two derivatised cellulosic fibres differ appreciably from their regenerated and reconstituted cellulosic fibre counterparts, including, from the viewpoint of this review, dyeability, insofar as CA and CTA fibres are dyed almost exclusively using disperse dyes. As such, this review does not concern either of the two derivatised cellulosic fibres, CA and CTA, the reader being directed elsewhere for accounts of the properties and dyeability of these two fibre types 19,50,52,56‐62 …”

Section: The Cellulosic Fibre Dyeing Systemmentioning

confidence: 99%

The role of inorganic electrolyte (salt) in cellulosic fibre dyeing: Part 1 fundamental aspects

Burkinshaw

2021

Coloration Technology

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This review concerns the application of dyes to both natural and man‐made cellulosic fibres from aqueous dyebaths using exhaust dyeing processes and the role of added inorganic electrolyte in such dyeing systems. This part of the article presents a review of the fundamental properties and characteristics of cellulosic fibres and each of the five classes of dye employed for their coloration, as well as the essential principles involved in the application of the various types of dye to cellulosic fibres. In the next part of the article, the various theories and concepts which have been proposed to account for the promotional effect exerted by added inorganic electrolyte on dye uptake are reviewed and scrutinised, from the viewpoints of the essential physico‐chemical properties of the five classes of dye that are used and the fundamental aspects of their application.

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Section: The Cellulosic Fibre Dyeing Systemmentioning

confidence: 99%

The role of inorganic electrolyte (salt) in cellulosic fibre dyeing: Part 1 fundamental aspects

Burkinshaw

2021

Coloration Technology

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“…Among cellulose fibers, the viscose fibers are a very suitable raw material for producing multipurpose cleaning cloth [2] because they possess good hygienic properties, super water absorbency, softness [2,23], lower electrical resistance [9,10,21], and higher value of dielectric properties [21]. However, in order to increase the strength of the products obtained from viscose fibers, specially in a wet state, they are blended with other fibers, such as polypropylene, polyester, etc.…”

Section: Introductionmentioning

confidence: 99%

Multipurpose Nonwoven Viscose/Polypropylene Fabrics: Effect of Fabric Characteristics and Humidity Conditions on the Volume Electrical Resistivity and Dielectric Loss Tangent

et al. 2020

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In this work, the volume electrical resistivity and dielectric loss tangent of viscose/polypropylene multipurpose nonwoven fabrics were examined. According to the obtained results, the changes in the volume electrical resistivity depend on the applied chemical bonding agent, viscose fiber content, moisture content, fabric thickness, fabric weight, and relative air humidity. Based on the volume electrical resistivity hysteresis, the portion of sorbed moisture retained in the material after desorption, as well as the portion of moisture removed from the material during desorption, were determined. Furthermore, the dielectric loss tangent measured at the frequency range between 30 Hz and 140 kHz, for the samples exposed to different relative air humidity (40 % and 80 %) and wet samples, is dependent on the chemical bonding agent, viscose fiber content, moisture content, as well as frequency of the external electric field. The dielectric loss tangent measured at 80 % relative air humidity showed a peak at about 100 Hz, while for the wet samples, the peak was observed in the frequency range between 30 and 140 kHz. In a wet state, the dielectric loss tangent is primarily influenced by the water molecules present in the sample.

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“… a Values adopted from Michud et al, the DP of pulp before xanthation for viscose production is 270 to 350 …”

Section: Results and Discussionmentioning

confidence: 99%

“…Mechanical Properties of Regenerated Fibers and Viscose FiberValues adopted from Michud et al,28 the DP of pulp before xanthation for viscose production is 270 to 35049 …”

mentioning

confidence: 99%

Circular Textiles: Closed Loop Fiber to Fiber Wet Spun Process for Recycling Cotton from Denim

Zeng

Wang

et al. 2019

ACS Sustainable Chem. Eng.

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Textile waste is a major waste source found in landfills around the world today, due to increases in population, fast fashion cycles, and inefficient recycling technologies. Here we demonstrate a textile recycling process whereby waste denim is dissolved into a binary solvent and a regenerated cellulose fiber is wet spun. We show that using this process the spun fiber can be regenerated whereby the original color of the waste garment is maintained or regenerated in the absence of color. The retention of color can be significant since the regenerated fibers do not need to be redyed, saving considerable water and energy that is typically required in the traditional textile dyeing processes. This process utilized dimethyl sulfoxide (DMSO) as a cosolvent with ionic liquid 1-butyl-3-methylimidazolium acetate ([Bmim]OAc) for the dissolution of the denim waste. The addition of the cosolvent allowed fast dissolution of the cellulosic materials while reducing the viscosity of the spinning dope. The regenerated discolored cellulose fibers produced had similar mechanical properties and morphology to that of viscose fibers, a common regenerated cellulose fiber used extensively in the textile industry. Furthermore, the utilization of binary IL solvent with high DMSO concentration (1:4) reduces the overall process cost. Synopsis: Recycling waste denim creating a regenerated cellulose fiber which can retain the color of the starting textile item or the color can be removed leaving a neutral fiber.

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Fibres related to cellulose

Cited by 11 publications

References 0 publications

The role of inorganic electrolyte (salt) in cellulosic fibre dyeing: Part 1 fundamental aspects

The role of inorganic electrolyte (salt) in cellulosic fibre dyeing: Part 1 fundamental aspects

Multipurpose Nonwoven Viscose/Polypropylene Fabrics: Effect of Fabric Characteristics and Humidity Conditions on the Volume Electrical Resistivity and Dielectric Loss Tangent

Circular Textiles: Closed Loop Fiber to Fiber Wet Spun Process for Recycling Cotton from Denim

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