Advanced Materials Research Vols. 175-176

Abstract: Many nanotech-based fabrics products and applications are already in use for textile finishing process in many countries. The industry aims at taking advantage of the opportunities of new nanomaterials while producing safe and ecological textiles. However, some concerns have been raised regarding the potential of engineering nanoparticles to have a negative impact of the human health and the environment. Up to now there are only few toxicological research and safe assessment done on the release of engineered nanoparticles from such products. This article summarizes the coping strategies and risk management of some developed countries and outlines the necessity of prospect research and risk assessment for nanotechnology potential hazards and technical uncertainty of nano-coated textiles to the environment and public health. The author believed the responsive regulations will allow for prevention and treatment of a nano-textiles’ life-cycle risks and support the safe, responsible development of nanotechnology while providing favorable conditions for textile industrial innovation to ensure that research and technological development is translated into affordable and safe wealth-generating products and processes.

Abstract: A water-soluble blocked isocyanate cross-linker was prepared, then it was used to improve durability of water- and oil-proof finishing on silk fabric. The results showed that the stability of the blocked isocyanate’s emulsion was better and the deblocking temperature of the blocked isocyanate was 67oC. As the blocked isocyanate was used in water- and oil-proof finishing on silk fabric, the durability of water- and oil-proof of the fabric was holding well after 10 launderings. Compared with the general cross-linkers (2D resin, TMM, HMM, etc.), the blocked isocyanate had no free formaldehyde release. And breaking strength, whiteness and handle of treated silk fabric had negligible decrease.

Abstract: Nano-super(AB) microcrystalline dispersoid self-prepared is the main raw material. The cotton is given an excellent and lasting anti-UV and anti-bacterial function through the dipping-padding-baking treating process. The SEM observation indicates that the surface of finished cotton fabrics take on small and uniform nano-particle with size of 10nm. XRD analysis shows that nano-particle on the surface of cotton is standard wurtzite zinc oxide. The treated cotton fabrics reveal excellent anti-UV property and the rating of ultraviolet protection factor(UPF) attains 50+ when the concentration of nano-super（AB）is 16g/L. The antibacterial rate reaches more than 99% for Staphylococcus and Bacillus coli. In addition, the dyed cotton fabrics which were finished by Nano-super(AB) microcrystalline dispersoid reveal excellent anti-UV property, and have good wash fastness and light fastness.

Abstract: The past decade has been marked by a growing interest in the development and use of ecologically friendly dyes. In this paper, a novel non-azobenzene ligand, (Z)-4-amino-2-(4-carboxyphenyl)-5-(hydroxyimino)-2,5-dihydro-1H-imidazole 3-oxide, was synthesized by the reaction of 3,4-diaminoglyoxime with 4-formylbenzoic acid, and characterized by IR, 1H-NMR and MS. The values of the 1H-NMR spectral results were in harmony with previously reported (Z)-4-amino-5-(hydroxyimino)-2,5-dihydro-1H-imidazole 3-oxide derivatives. Its brown ferrous complex has been prepared conveniently and applied to dye silk fabric. From the IR spectra of the complex, the stretching vibration for the ring of imidazole was disappeared, and the C=N absorption was lower than that of the ligand, which indicated that the N,N-chelate coordination bond was formed and the participation of the C=N-OH group in metal coordination. The colour fastness values of the dyed silk fabric to light, washing and rubbing were measured. The washing fastness of dyed silk fabric can reach 4 grade or 4-5 grade; the rub fastness 3-5 grade; the light fastness 3 grade.

Abstract: The chitosan nanoparticles can be prepared by ionotropic gelation method in dispersion system. Chitosan nanoparticle has advantages of both the chitosan and the nano particles, and so it has a wide application in the textile finishing field. In this paper, the effects of the concentration of TPP, Span-80, deposited time and pH value on the diameter distribution of the chitosan nanoparticles are discussed in order to obtain the optimized preparation technics of steady state chitosan nanoparticle. The results show that chitosan nanoparticles are successfully prepared by ionotropic gelation method. Under the optimized preparation technics, chitosan nanoparticles disperse homogeneously in the system and have a good steady state. The average diameter of chitosan nanoparticle in the dispersion system is 20.82nm. Compared with the ordinary silk fabric, the B. mori silk fabric treated with chitosan nanoparticle dispersion system has better deepen effect of reactive dyes. The chitosan nanopartilce dispersion system is helpful to improve the dye uptake and dye fixation of silk fabrics.

Abstract: A species of derivatives of HBP-NH2 was synthesized from methyl acrylate, diethylene triamine and dodecylamine by two different modes (HSDA-1 and HSDA-2). Its molecular weight and possible structure were characterized by gel permeation chromatography, fourier transform infrared spectrophotometry and nuclear magnetic resonance spectroscopy. Dyed with reactive dyes, the cotton fabric which treated with the aqueous solution of HSDA displayed dramatically enhanced color strength, even when dyeing without electrolyte. It is concluded that the HSDA polymer can be used as a high direct staining salt-free auxiliary in reactive dyeing on cotton.

Abstract: Silk peptide-based surfactants were synthesized from fatty acyl chloride and silk peptide using Schotten-Baumana method. The structure of the product was characterized by IR and amino acid analysis, and the surface activity of the product was tested. The IR spectra showed the characteristic bands corresponding to the stretching vibration of C=O, N-H, C-N and -COONa groups. The amino acid analysis indicated that there were many kinds of amino acid in the products, and the most ones were glycine and alanine, which made up nearly 95% of the total content of amino acid. The surface activity experiment results showed these surfactants had excellent surface activity. In the homologous compounds of surfactants, the critical micelle concentration (cmc) reduced and the trend of micelles formation increased with the hydrocarbon chain length increasing.

Abstract: The natural color silk has been treated by sodium hydroxide and sodium carbonate，and the structure, crystallize and mechanical properties of the treated natural color silk were studied. The results showed that the structure of natural color silk was not changed and the degree of crystallinity decreased; the crystallinity of un-treated natural color silk was 44.4%, while the crystallinities of natural color silk treated by sodium hydroxide and sodium carbonate were 35.2% and 43.6%, respectively. The breaking tenacity and the breaking elongation of natural color silk treated by sodium hydroxide dropped dramatically and the Young’s Modulus declined; but these properties of natural color silk were not changed significantly after being treated by sodium carbonate.

Abstract: The silk Sanitary Materials in hydrogen peroxide bleaching process, various experimental factors affect on the raw materials’ whiteness and tension. And through the single factor experiments and orthogonal test research and analysis, the significant influencing order of the whiteness of silk fiber is: temperature, concentration of hydrogen peroxide, and bleaching time; the significant influencing order of breaking tension is: bleaching time, temperature, and concentration of hydrogen peroxide. The optimum experimental program is as follows: hydrogen peroxide concentration of 22.5g / L, bleaching temperature of 80 °C, bleaching time, 60min, PH value of 9, sodium silicate concentration of 11.25g / L.

Abstract: Hangzhou is known as the town of silk. It has a history of more than five thousand years. In recent years, Hangzhou government takes “To promote the silk product and develop women’s wear” as an important content in building the city of outstanding quality life and harmonious society and has made remarkable achievements. Last year, the output of the silk and women’s wear industry reached 178.2 billion yuan. Silk products’ development is valued by the municipal government and it has very good prospects. While not many consumers of modern time are familiar with silk products and even less take silk products as their choices. The reasons of this problem lay one hand on the heritage of silk culture, and the other more important on the diversification and distribution of modern silk products. This paper firstly makes an introduction on the history of silk in Hangzhou and then makes detailed research on many local brands and specialize markets, it also describes silk’s application in modern women’s wear, accessories, home textiles and other articrafts. At last, the paper gives suggestions to silk enterprises on the improvement of Hangzhou silk products and the promotion of Hangzhou silk brands.