Development of durable shrink-resist coating of wool with sol-gel polymer processing

Shen, Jinsong; Smith, Edward M.; Chizyuka, M.; Prajapati, Chetna

doi:10.1007/s12221-017-7294-5

Cited by 25 publications

(12 citation statements)

References 22 publications

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“…The two amino side group-containing trialkoxysilane provides better shrink proofing, however, the amino and alkoxy group had a significant influence on the shrink proofing finish. Shen et al [164] produced the durable shrink-resist wool with silane containing 3-mercaptopropyl trimethoxysilane (MPTMS). In a sol-gel hybrid, epoxy or mercapto groups were added to enhance the durability.…”

Section: Anti-felting Finishing On Woolmentioning

confidence: 99%

“…Scheme 1. The possible reaction of MPTMS with wool (Reproduced from [164], with kind permission of Springer). .…”

Section: Anti-felting Finishing On Woolmentioning

confidence: 99%

“…Additionally, the silane Figure 24. SEM images of wool scoured with 2 g/L UPL then followed by treatment with a 2:1 dilution of sol-gel containing either GPTMS or MPTMS: before washing and after 7A and 3 × 5A washes (Reproduced from [164], with kind permission of Springer).…”

Section: Photochromic/thermochromic Color Change Finishingmentioning

confidence: 99%

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Progress in Sol-Gel Technology for the Coatings of Fabrics

et al. 2020

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The commercial availability of inorganic/organic precursors for sol-gel formulations is very high and increases day by day. In textile applications, the precursor-synthesized sol-gels along with functional chemicals can be deposited onto textile fabrics in one step by rolling, padding, dip-coating, spraying or spin coating. By using this technology, it is possible to provide fabrics with functional/multi-functional characteristics including flame retardant, anti-mosquito, water- repellent, oil-repellent, anti-bacterial, anti-wrinkle, ultraviolet (UV) protection and self-cleaning properties. These surface properties are discussed, describing the history, basic chemistry, factors affecting the sol-gel synthesis, progress in sol-gel technology along with various parameters controlling sol-gel technology. Additionally, this review deals with the recent progress of sol-gel technology in textiles in addressing fabric finishing, water repellent textiles, oil/water separation, flame retardant, UV protection and self-cleaning, self-sterilizing, wrinkle resistance, heat storage, photochromic and thermochromic color changes and the improvement of the durability and wear resistance properties.

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Section: Anti-felting Finishing On Woolmentioning

confidence: 99%

“…Scheme 1. The possible reaction of MPTMS with wool (Reproduced from [164], with kind permission of Springer). .…”

Section: Anti-felting Finishing On Woolmentioning

confidence: 99%

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Progress in Sol-Gel Technology for the Coatings of Fabrics

et al. 2020

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“…At present, many sustainable technologies for eco-friendly processes of wool shrinkproofing methods have been brought forward under the concept of environmental protection, including enzyme treatment [4], plasma processing [5], ozone gas processing [6], and processing with nano materials and so on [7]. The enzyme method is not only eco-friendly but also has mild conditions [8].…”

Section: Introductionmentioning

confidence: 99%

“…However, the enzyme activity and the homogeneity of the treatment are affected by the graft modification [23]. In addition, the method of polymer deposition with organics or resin has also been suggested to improve the tensile strength of the treated wool fiber [7]. However, the feeling of the wool becomes rough by the polymer deposition process.…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly and Highly Efficient Enzyme-Based Wool Shrinkproofing Finishing by Multiple Padding Techniques

et al. 2018

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Wool fibers usually need shrinkproofing finishing. The enzyme process is an eco-friendly technology but the traditional exhaustion treatment usually takes excessive time. This study developed a novel multiple padding shrinkproofing process of wool with Savinase 16L and an organic phosphine compound {[HO(CH2)n]3P, n ∈ (1, 10)}. SEM and XPS analyses were employed to compare the wool treated respectively by exhaustion and by padding to reveal the effect of multiple padding. The results showed that treated wool fiber achieved the requirement of machine-washable (area shrinkage less than 8% according to standard TM 31 5 × 5A) in 2.5 min by the padding process. The padding process can control the adsorbance of enzyme on wool, which makes treatment more uniform and avoids strong damage of the wool. Also, the removal efficiency of the disulfide bond was about 15 times as much as in the exhaustion treatment in 2.5 min. The average catalytic rate of the padding process was 14 times faster than the exhaustion process, and the process time (2.5 min) decreased by 32.5 min compared with the exhaustion process (35 min). Multiple padding techniques can achieve continuous production and replace the environmentally harmful chlorination process. Our results provide the underlying insights needed to guide the research of the enzyme process application.

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A novel “trifunctional protease” with reducibility, hydrolysis, and localization used for wool anti-felting treatment

Mei

Zhang

et al. 2018

Appl Microbiol Biotechnol

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Proteases can cause unacceptable fiber damage when they are singly applied to wool anti-felting treatment which can make wool textiles machine-washable. Even if protease is attached by synthetic polymers, the modified protease plays a limited role in the degradation of keratin with dense structure consisting of disulfide bonds in the scales. Here, to obtain "machine-washable" wool textiles, a novel "trifunctional protease" with reducibility, hydrolysis, and localization is developed by means of covalent bonding of protease molecules with poly (ethylene glycol) bis (carboxymethyl) ether (HOOC-PEG-COOH) and L-cysteine using carbodiimide/N-hydroxysuccinimide (EDC/NHS) coupling, aiming at selectively degrading the scales on the surface of wool. The formation of polymer is confirmed with size exclusion chromatography (SEC) and Fourier transform infrared spectroscopy (FT-IR). Ellman's test and fluorescence microscopy reveal that the modified protease can reduce disulfide bonds and restrict hydrolysis of peptide bonds on the wool scales. Furthermore, when applied to wool fabrics, the modified protease reach better treatment effects considering dimensional stability to felting (6.12%), strength loss (11.7%) and scale dislodgement proved by scanning electron microscopy (SEM), alkali solubility, wettability, and dyeability. This multifunctional enzyme is well-designed according to the requirement of the modification of wool surface, showing great potential for eco-friendly functionalization of keratin fibers rich in disulfide linkage.

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Development of durable shrink-resist coating of wool with sol-gel polymer processing

Cited by 25 publications

References 22 publications

Progress in Sol-Gel Technology for the Coatings of Fabrics

Progress in Sol-Gel Technology for the Coatings of Fabrics

Eco-Friendly and Highly Efficient Enzyme-Based Wool Shrinkproofing Finishing by Multiple Padding Techniques

A novel “trifunctional protease” with reducibility, hydrolysis, and localization used for wool anti-felting treatment

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