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RISS 인기검색어
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- 저자 : Yarong Wu (검색결과 3 건)
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Research on Pilling Performance of Cashmere Knitted Fabric Based on Fiber Frictional Properties
Yarong Wu,Wanyun Tian,Xue Zhang,Gui Liu,Luyi Chen 한국섬유공학회 2023 Fibers and polymers Vol.24 No.12
Pilling of cashmere knitted fabric has always been and being a tough problem; the scales available on the cashmere fiber surface and the as-resulted special frictional effect were one of the main reasons for pilling. In this research, the frictional coefficients [with-scale static coefficient (μws), with-scale dynamic coefficient (μwd), anti-scale static coefficient (μas), anti-scale dynamic coefficient (μad), μas- μws, μad-μwd, (μas- μws)/(μas+μws) and (μad- μwd)/(μad+μwd)] of cashmere fiber were measured by capstan method, and the conditions for measuring were optimized. On this basis, eight kinds of typical chemical or biological (protease) treatments were selected for anti-pilling treatment of cashmere knitted fabric, and the frictional coefficients of cashmere fiber under these treatments were measured. The surface morphology and the surface hairiness of cashmere were observed by scanning electron microscope (SEM) and ultra-depth of field microscope, respectively. The pilling performance of these treated knitted fabrics was conducted by means of pilling box method. The effect of different chemical/biological treatments on the frictional properties of fibers and the relationship between frictional properties and pilling performance were analyzed based on OLS regression analysis and independent sample t test using Stata 16.0. Experimental results showed that there was a good correlation between the pilling performance of cashmere fabric and the value of μad- μwd. When considering the specific chemical/biologic treatments, different treatments possessed different effects on the specific indicators of fiber frictional performance; so, for different treatment processes, different frictional coefficients could be selected to assist the evaluation of fabric pilling performance.
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Yarong Li,Yaqian Zhou,Huanjin Liu,Chenxu Wei,Shuli Chen,Zhengying Hua,Yan Xu,Yu Wu,Weidong Li 한국식품영양과학회 2022 Journal of medicinal food Vol.25 No.10
We investigated the changes in the main active ingredients and pharmacodynamic differences in the therapeutic effect of garlic before and after steaming and the correlation between them. The main active ingredients in raw garlic products (RGPs) and steamed garlic products (SGPs) were determined by high-pressure liquid chromatography and ultraviolet spectroscopy. Acute rapid diarrhea (AD) and antibiotic-induced diarrhea (DD) models were established in rats, and each group was treated with RGP and SGP, respectively. The main chemical components of garlic changed before and after steaming. Garlicin and alliinase were only found in RGP, whereas only alliin was found in SGP. Both RGP and SGP contained garlic polysaccharides. For in vivo experiments on AD, the average rate of loose stools was 100.00 ± 0.00, 31.55 ± 11.76, and 19.14 ± 6.62 in the RGP high-dose and SGP high-dose treatment groups, respectively; in DD, the rates were 91.11 ± 14.40, 19.33 ± 3.63, and 30.56 ± 4.30, respectively (P < .01, treatment vs. model groups). In AD, the average grade of loose stools was 2.33 ± 0.52 and 1.83 ± 0.75 in the model and RGP high-dose treatment groups, respectively (P < .05); in DD, the values were 2.17 ± 0.41 in the model group and 1.67 ± 0.52 in the SGP high-dose treatment group (P < .05). RGP had a better therapeutic effect on AD, mainly related to the antibacterial effect of garlicin in RGP. SGP had a better therapeutic effect on DD, mainly related to the alliin and garlic polysaccharide in SGP. This study could provide evidence to support the clinical use of garlic.
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Anti-pilling of Cashmere Knitted Fabric Based on Siloxane-Modified Chitosan
Wanyun Tian,Luyi Chen,Xue Zhang,Yarong Wu 한국섬유공학회 2023 Fibers and polymers Vol.24 No.12
In this study, chitosan was modified by two kinds of different siloxanes, γ-glycidoxypropyl-trimethoxysilane (GPTMS) and γ-glycidoxypropyl-dimethoxy- methylsilane (GPDMS), respectively, then applied for anti-pilling of cashmere knitted fabrics. The structure of the modified chitosan, the apparent morphology and the mechanical properties of the modified film were analyzed by FTIR, SEM and DMA, respectively. The hydrophilicity and swelling properties of the modified film were compared. The results showed that epoxy groups of siloxane reacted with amino groups of chitosan, and the –OR (R represents alkyl) groups of siloxane hydrolyzed and polycondensation conducted during the film-forming process. After modification, the mechanical properties of the film were more flexible, the hydrophilicity and swelling of the film was decreased. Cashmere knitted fabric was treated with the modified chitosan and glutathione was chosen as the model compound to explore the reaction between modified chitosan and cashmere fibers. The apparent morphology and elements distribution of the fibers were observed by SEM and EDS, respectively. The directional friction effect of the fibers was tested by fiber friction coefficient tester. The pilling grade, handle, whiteness and launderability of fabric were investigated. The results showed that the epoxy groups remaining in siloxane were reacted with the amino groups of cashmere fiber, which enhance the binding of the fiber and siloxane-modified chitosan, the siloxane-modified chitosan film formed on fibers in situ. The directional friction effect of the fiber significantly reduced, the tendency of fuzzes to the surface of the fabric was weakened and the probability of tangling of exposed fuzzings was reduced, the pilling grade of the fabric treated by modified chitosan reached level 4 and the fabrics had good launderability, the soft and smooth handle was still preserved. There was no obvious color difference of cashmere fabrics treated with siloxane-modified chitosan.
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