Shrink-Resistant Properties and Surface Characteristics of Wool Fibers Treated with Multifunctional Epoxides

Ito, Harumi; Muraoka, Yoichiro; Umehara, Ryo; Shibata, Yutaka; Miyamoto, Takeaki

doi:10.1177/004051759406400802

Cited by 10 publications

(7 citation statements)

References 6 publications

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“…The protease-treated and S-BAP+S-RPU combination finished fabric (9.44%) is shrunk lesser than other combination finished fabrics (> 10.34%). The deposition of S-BAP polymer on the modified cuticle layer followed by masking the scales of the wool fibers and improvement in hydrophilicity by S-RPU polymer may reduce synergistically the differential friction effect of the wool fibers and alternatively reduces the shrinkage this blend fabric 25,26) . Ⅰ6ⅠL.…”

Section: Shrinkagementioning

confidence: 99%

Performance Properties of Multi-Functional Finishes on the Enzyme-Pretreated Wool/Cotton Blend Fabrics

Ammayappan¹,

Moses²,

Senthil³

et al. 2011

Textile Coloration and Finishing

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Abstract-Research information related to application of enzyme as pretreatment and subsequent functional finishing on wool blended textiles for imparting multi-functional properties is still scanty. Yarn-blended wool/cotton fabric was pretreated with both a cellulase (Bactosol-CA) or a protease (Savinase-16.0LEx) in individual, subsequently finished with Synthappret-BAP and β-cyclodextrin based combination to impart anti-shrink, anti-microbial, softening and anti-crease properties. The performance of the finished fabrics depended on type of finishing combinations applied rather than enzyme pretreatment. Savinase pretreatment followed by Synthappret+Ceraperm-MW combination finishing impart both anti-shrink property as well as softening, while Bactosol pretreatment followed by β-cyclodextrin and sanitize combination finishing impart antimicrobial activity as well as anti-shrink finish to the wool/cotton blend fabric.

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Section: Shrinkagementioning

confidence: 99%

Performance Properties of Multi-Functional Finishes on the Enzyme-Pretreated Wool/Cotton Blend Fabrics

Ammayappan¹,

Moses²,

Senthil³

et al. 2011

Textile Coloration and Finishing

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“…Previous investigations of air permeability considered airflow through many diverse substrates such as parachute cloths, nets, gauzes, apparel fabrics, etc. These studies [4,1] ] changed elements of fabric structures and reported the effects on the airflow rate when a relatively low pressure drop was applied. However, little published work is available that is specific to the high pressure projection of gas through textile structures, which is akin to the functional performance of an airbag.…”

Section: Literature Citedmentioning

confidence: 99%

“…Multifunctional epoxides react with protein fibers such as wool and silk. The epoxides crosslink with amino acid residues, e.g., amines, alcohols, phenols, thiols, carboxylic acids, and so on, thus improving such fabric performance properties as shrink resistance and wrinkle recovery [4,12,18,23 ] . Many researchers have analyzed the reactivity of epoxide on silk and demonstrated its effects with regard to changes in physical properties, moisture absorption, chemical resistance, and wash and wear properties [20,22,26].…”

mentioning

confidence: 99%

Crosslinking of Wool with Epoxide

Kang

Moon

1998

Textile Research Journal

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Wool fabric is treated with a simple pad-dry-cure process using glycerol polyglycidyl ether, a multifunctional epoxide, to improve wrinkle recovery. Crosslinked samples with different add-ons are obtained by varying the epoxide concentration in the reaction system. Crosslinking of wool with epoxide is indirectly demonstrated by a solubility test, SEM, and FT-IR spectrometry. The crystalline structure of the crosslinked wool fabric remains unchanged, despite epoxide treatment. Moisture regain is reduced as epoxide concentration increases. Chemically modified wool fabrics show improved wet and dry wrinkle recovery behavior due to crosslinking. The effect of crosslinking on the glass transition temperature ( T g ) of wool is investigated using differential scanning calorimetry. The T g of dry wool is predicted by plotting the reciprocal of T g as a function of the water weight fraction using the Fox equation. The T g of the samples increases with crosslinking. A thermomechanical analysis confirms that although the temperature of the final contraction peak of the crosslinked wool samples is similar to that of the untreated sample, it drops substantially above 20% epoxide concentration, suggesting less thermal stability.

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“…The chemical modification of wool can be regarded as a powerful tool to improve some inferior textile performance of the fibers and to impart new physico‐chemical and functional properties suitable for technological implementation, in order to meet market requirements for better wear and maintenance behavior of textile goods and for developing new textile products. The most popular chemical modification techniques are the graft copolymerization of vinyl monomers,1, 2 and the reaction of modifying agents, such as epoxides3–6 and acid anhydrides 7–9. Grafting implies the loading of fibers with large amounts of polymer, which are often needed to obtain the desired effect.…”

Section: Introductionmentioning

confidence: 99%

“…The first attempts to apply epoxides date back to the 1970s, thanks to the scientific contribution of Tanaka and Shiozaki 3. Epoxide‐treated wool fibers exhibited improved chemical resistance,3 crease recovery,5 and shrink‐resist properties 6. However, in spite of the evident improvement of fiber properties, the application to industrial‐scale processing of the epoxide treatment is still limited.…”

Section: Introductionmentioning

confidence: 99%

Chemical modification of wool fibers with acid anhydrides

Freddi

Tsukada

Shiozaki³

1999

J. Appl. Polym. Sci.

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Wool fibers were chemically modified by reaction with succinic and glutaric anhydrides. The weight gain (and acyl content) increased with increasing the reaction temperature (65-80°C) and time (1-2 h), attaining 18.9% (158.9 mol/10 5 g) and 23% (163.9 mol/10 5 g) for succinylated and glutarylated wool, respectively. Changes in the amino acidic pattern of acylated wool, i.e., decrease of basic amino acid residues and formation of ornithine, were observed by acid hydrolysis. The X-ray diffraction profiles of modified wool fibers remained essentially unchanged, suggesting that the crystalline structure was not affected by reaction with acid anhydrides. The degree of molecular orientation of acylated wool slightly decreased, especially at high weight gain. The viscoelastic response of wool modified with succinic and glutaric anhydrides was characterized by a shift to a lower temperature of both the drop of the storage modulus and the peak of the loss modulus. These features are indicative of a higher mobility of the keratin chians in the amorphous and crystalline domains. In fact, it is suggested that the chemical agent diffused into the accessible parts of ␣-crystallites, reaching the available reactive sites. This did not cause changes in the crystalline pattern of wool, but resulted in a different thermal behavior of fibers.

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Shrink-Resistant Properties and Surface Characteristics of Wool Fibers Treated with Multifunctional Epoxides

Cited by 10 publications

References 6 publications

Performance Properties of Multi-Functional Finishes on the Enzyme-Pretreated Wool/Cotton Blend Fabrics

Performance Properties of Multi-Functional Finishes on the Enzyme-Pretreated Wool/Cotton Blend Fabrics

Crosslinking of Wool with Epoxide

Chemical modification of wool fibers with acid anhydrides

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