Advanced Materials Research Vol. 796

Abstract: To improve the hydrophobicity and antistatic property of polyester fabric, A novel sericin modifier was prepared by amino in the sericin reacting with epichlorohydrin in alkaline condition under the protection of N₂. And then it was grafted onto the polyester fabric treated alkaline deweighting. The optimal technological conditions of sericin modifier were achieved through orthogonal design experiment. The polyester fabric treated with above mentioned sericin modifier not only had excellent antistatic performance, but also hygroscopicity property and so on. The surface charge of treated fabrics with and without sericin modifier were measured, which greatly reduced after finishing. And the contact angle declined obviously. The strength of the fabric treated alkaline deweighting reduced clearly from 519 N to 277 N, however, it reinstated the original strength because sericin modifier grafting onto the polyester fabric could prevent the movement of molecular chain. Alkaline deweighting of polyester fabric decreased fabric density which increased the gas permeability and still reinstated the good property after treating with sericin modifier. Infrared spectra (FTIR) showed that sericin modifier was fixed on the polyester fabric treated alkaline deweighting successfully.

Abstract: In the current work, aminosilicone oil modified with long-chain alkyl groups was obtained by a series of reactions, and the modified aminosilicone oil was emulsified and applied on silk fabric finishing. The effects of the content of long-chain alkyl and amino groups on the finishing efficiency were investigated. The results showed that the surface roughness of the finished silk fabric decreased with the increase of amino content, and when the amino content reached 11%, the surface roughness of finished silk fabric was 40.9% lower than the untreated fabric. This afforded the finished silk fabric with excellent softness and smooth performance. The bending rigidity of the finished silk fabric decreased when the long-chain alkyl group content increased. Meanwhile, element Si was introduced on the surface of silk fabric with 18.93% element content, offering silk fabric with smooth and soft handle.

Abstract: In the presence of alkaline catalyst sodium hydroxide, the intermediate of hyperbranched polyester (H20Cl) was prepared by the modification of hyperbranched polyester Boltorn H20 with epichlorohydrin. Then a new kind of quaternary ammonium functionalized hyperbranched polyester antibacterial agent (H20C16N) was synthesized by the reaction of H20Cl and hexadecyldimethylamine. The structures characterizations of H20C16N were characterized by ¹H NMR. The application of H20C16N used as antibacterial agent of silk fabric was studied. The antibacterial ratio was 99.06% against escherichia coli and 98.24% against staphylococcus aureus.The excellent antibacterial properties of treated silk fabric were provided.

Abstract: The high purity silk peptide powder can be obtained by the method of atomizing drying after the boiled silk (sericin) is decolorized, enzymatic dissolved, ion exchange purificated and concentrated. It can be used as the additive of high-grade cosmetics. The amino acid components of sericin provide excellent moisture absorption and retention on the skin. The molecular weight size of sericin will directly affect the types of cosmetic application. The results show that the sericin can inhibit the activity of tyrosine and the formation of melanochrome effectively. Through the experiment and SEM observation, we discovered that the sericin on the hair provides excellent hair care and repair effect. The application of sericin in cosmetics will provide parameter value of experimental evidence for developing new varieties of sericin in cosmetics.

Abstract: Trans-4- [p- (N, N-Die (2-hydroxyethyl)) styry-N-ethyl pyridinium bromide (DHEASPBr-C₂), a hemicyanine fluorescent dye, was encapsulated into silica nanoparticles by co-hydrolysis and co-condensation of organosilanes in the presence of the dye. The dye containing silica nanoparticles were applied onto cotton fabrics. Scanning electron microscopy (SEM), UVvis spectra, single-photon emission fluorescence spectra and reflectance spectra of the samples were characterized. The SEM results showed that the particle size (ranging from 100-200 nm) and dye encapsulating (1.5-8.1 mg dye per g silica matrix) could be adjusted by the concentration of fluorescent dye and organosilanes. The reflectance of the treated cotton fabrics showed that there were obvious adsorption spectra in 410 - 540 nm and emission spectra in 560 - 700 nm.

Abstract: High wet fastness dyeing is always the hot issue of silk industry. The plenty of tyrosine residue in silk protein may contribute an opportunity to solve this problem. In this paper, in situ coloration of silk is described using coupling reaction between diazonium compounds, made from different arylamine derivatives, and tyrosine residues in the silk fibroin. The spectra of coloured silk and the washing and rubbing fastness were measured. The results suggest that the use of coupling reactions could be developed into a dyeing method for silk. The wet fastness properties of such coloration are good because the chromophores are incorporated into the protein chains.

Abstract: The effects of poly (vinyl pyrrolidone)(PVP) on dispersing carbon black (CB) particles were investigated by measuring Z-average particle size, Zeta potential and centrifugal stability of CB dispersions. Addition of PVP in a dispersing medium significantly reduces the size of suspended CB particles, especially in water. The dispersing efficiency of PVP was found to have been enhanced by adding an anionic surfactant, sodium methylenedinaphthalene disulphonate (NNO) in the aqueous media. The particle size of CB dispersed with PVP and NNO was 175.7 nm, significantly smaller than that dispersed with PVP and sodium dodecyl sulfate (SDS). The performance of PVP-encapsulated CB particles and that of PVP-adsorbed CB particles were also compared. The particle size and Zeta potential of PVP-encapsulated CB particles were similar to those of PVP-adsorbed CB particles using ultrasonic method, but the centrifugal stability of PVP-encapsulated CB dispersions was significantly improved. The relative absorbency of PVP/CB dispersions was increased from 42.0% to 63.7%. However, the PVP-encapsulated layer can be destroyed by prolonged ultrasonic treatment because the ultrasound over a long period of time can not only break up the flocculation bridge in the crosslinking matrix of PVP, but also flake off the PVP shells on the surface of CB particles.

Abstract: Automatic cutting helps improve efficiency in modern garment production. The design of cutting Numerical Control System determines the speed and quality of cutting flow. The optimization of cutting path based on different marking project, which helps improve not only the efficiency but also the level of systematic intelligence. The optimization of automatic cutting path varies with different layout planning. The layout planning of style design is different, so the individual feature of automatic cutting movement is different. The difference reduces the efficiency of automatic cutting work. Therefore it becomes especially important to analyze and extract common and individual feature of the different garment marking. This paper makes in-depth analysis on the layout planning of enterprises dressing gowns. Through using the method of actual discharge case by comparing and mathematical statistics, from the frequency characteristics, the sample outline of linear features and the utilization rate of discharge, this paper abstracts the character of different schemes of the dressing gown, obtains the common and individual feature, generates the linear path configuration of different pattern. The linear path help automatic cutting system path optimization for scientific basis and technical methods.

Abstract: The manual body measurement method is one of the main methods for clothing enterprises to collect the body measure data for garment at present. Because there are some problems in the current measurement method, for instance, the less consideration in the clothing Ergonomics, low efficiency and poor accuracy of the data, the adjustment of the measurement process is systematical proposed, respectively from the aspects of the measurement environment, the friendliness to the measured people, the measurers' workload and the rationality of the measurement parts. And the different measurement processes' applicability in various uses is analysed. The pre-measurement, measurement and post-measurement' environment is improved. Concerning the mental endurance of the measured people, their times of changing positions during the measurement is reduced. The times of the measurers and the tools' move during the measurement is minimized. The shared points' use of the different measurement parts is adjusted. The emphasis of this paper is to prove the measurement methods in the different uses through the time and the data obtained from the experiments of the optimized measurement methods, and gives an adaptive analysis of the amended methods to achieve the purpose of optimizing the corresponding applications.

Abstract: The world trend of increase in the senior citizen population has become increasingly more pronounced. Closer attention and greater effort in managing the associated issues are thus more pressing. Furthermore, all of us will turn into old age sooner or later. It is to the benefit of everyone to continuously examine the improvement in the welfare of the elderly. We have explored the smart clothing with silk prospect for the senior citizen. We have stressed comfort, safety, and convenience in our work. Some rooms have been reserved for further expansion to add on more appropriate functions and for elimination of the outdated. Helpful systems approaches with the combination of both "top-down" and "bottom-up" route have been used for the investigation. Biomimetics, i.e. helpful lessons or inspiration from Mother Nature is applied whenever appropriate to improve the potential of our smart clothing. Attractive features of modern silk including light weight, low thermal conductivity, good absorbency, low wrinkle, strong, bio-compatible and bio-degradable will be tailored into the smart clothing for better functions. More medical assistance issues including the potential of working as a second skin will also be explores. It is our hope that our total effort will help the elderly to live a better life physically, physiologically, and psychologically. Introduction The world trend of increase in the senior citizen population has become increasingly more pronounced. Closer attention and greater effort in managing the associated issues are thus more pressing. Furthermore, all of us will turn into seniors sooner or later. It is to the benefit of everyone to continuously examine the improvement in the welfare of the elderly. Clothing is one of the closest contacts with our body. There are many interactions between our body and the cloth we wear. It is of particular importance to deal with such issues in senior persons as the aging process may have progressively deteriorated some of their vital functions. Clothing with the proper intelligence will be more feasible to meet the challenge. We have explored the smart clothing with silk prospect for the senior citizen. Our approaches As we are becoming older in old ages, most of us will experience some physical and psychological deterioration that will affect our daily life. Some may become slower in responses. Others may have a fading memory. Some may have a physical issue of balancing themselves. Some may have hygiene issues such as unpleasant odor, incontinence. Some elderly may generate constant anxiety including worrying with or without causes. There may be insecure feeling towards many real or imaginary issues in life also.