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Zhang W.,Soochow University of China | Xing T.-L.,Soochow University of China | Xing T.-L.,Xinyuan Cocoon and Silk Group Co. | Zhang Q.-H.,Soochow University of China | Chen G.-Q.,Soochow University of China
Thermal Science | Year: 2014

Wool fabric was treated with silica sol and phosphorus doped silica sol by sol-gel method in order to improve its thermal properties and flame retardance. The thermal stability, combustion behavior, and smoke suppression of the control and finished wool fabric were analyzed using thermogravimetric analysis, limited oxygen index, micro combustion calorimeter, and smoke chamber. The results showed that wool fabric treated by phosphorus doped silica sol had excellent thermal properties and flame retardance with higher final char residue and LOI value. Furthermore, heat release rate and smoke density results indicated the safety performance of the treated wool fabric on fire. Source


Xing T.,Soochow University of China | Xing T.,Xinyuan Cocoon and Silk Group Co. | Li X.,Soochow University of China | Guo S.,Soochow University of China | And 3 more authors.
Textile Research Journal | Year: 2015

Silk fabrics were treated with tyrosinase then grafted by ɛ-polylysine (ɛ-PLL). The optimal enzymatic reaction condition was investigated through the test of enzymatic activity and consumption of dissolved oxygen concentration. Amino acid analysis and scanning electron microscope observation confirmed the grafting of ɛ-PLL onto the silk fabrics. The crease resistance of the grafted fabrics was increased. In particular, the wet wrinkle resistance property was improved. The strength of the grafted fabrics was nearly unchanged. The gas permeability and whiteness slightly decreased, which hardly has any impact on the wearability of the fabrics. The antibacterial test showed that the grafted silk fabric had an excellent resistant property to Staphylococcus aureus and Escherichia coli. The inhibition rate was about 90% after 30 times of washing, suggesting its potential application in antibacterial textiles and silk biomedical materials. © 2015, © The Author(s) 2015. Source


Yang M.,Soochow University of China | Li X.,Soochow University of China | Lu S.,Soochow University of China | Chen G.,Soochow University of China | And 2 more authors.
Journal of Fiber Bioengineering and Informatics | Year: 2015

Biological enzyme is a kind of substance, which can catalyze specific reaction. In our work, sericin membranes are prepared under the catalysis of tyrosinase, which promoting protein molecules crosslinking through tape casting method. Taking the water solubility of sericin membranes as the evaluation index, the optimal preparation conditions are determined as follows: the dosage of tyrosinase 1000 U/g, the reaction temperature 45°C, for 90 min, 2% glycerol and drying temperature at 45 °C. The results of infrared spectra indicate that the structure of amide I is changed in crosslinked sericin membranes. The XPS results indicate the O atom content is increased in crosslinked sericin membrane. This verifies the crosslinking of sericin protein by tyrosinase. © 2015 Binary Information Press. Source


Li S.-W.,Soochow University of China | Xing T.-L.,Soochow University of China | Xing T.-L.,Xinyuan Cocoon and Silk Group Co. | Li Z.-X.,Soochow University of China | Chen G.-Q.,Soochow University of China
Journal of Donghua University (English Edition) | Year: 2015

In order to enhance the water repellence property of cotton fabric, cotton fabric was grafted using hexafluorobutyl methacrylate (HFMT) monomer via atom transfer radical polymerization (ATRP) method. Water repellent cotton fabric was successfully prepared, and characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). The SEM images of the HFMT-treated cotton displayed significant difference from the untreated one. FT-IR characterization of the HFMT-treated cotton indicated that HFMT was successfully grafted onto the surface of the cotton fabric. XPS analysis indicated that the fluorine element of the HFMT-treated cotton existing on the surface of the cotton fabric. The surface contact angle test as well as the water repellence rating test showed that the water repellence of the HFMT-treated cotton fabric was much better than that of the untreated cotton fabric. The surface contact angle of the HFMT-treated cotton fabric could reach (132.4±2.2)°, and the water repellence rating could achieve grade 3. The washing durability of the HFMT-treated fabric was also investigated. The surface contact angle of the HFMT-treated cotton fabric could reach (121.1±2.1)° after 20 washing times. Furthermore, the whiteness, air permeability, breaking strength, and breaking elongation of the HFMT-treated cotton fabric decreased slightly compared with the untreated cotton fabric. Finally, cotton fabric with good water repellence property and excellent washing durability could be obtained with little effect on the intrinsic properties of cotton fabric. Copyright © 2015 Editorial Department of Journal of Donghua University. All rights reserved. Source


Zhang Q.-H.,Soochow University of China | Zhang W.,Soochow University of China | Chen G.-Q.,Soochow University of China | Xi T.-L.,Soochow University of China | Xi T.-L.,Xinyuan Cocoon and Silk Group Co.
Thermal Science | Year: 2015

Cotton fabric was treated with pure silica sol and boron doped partner through sol-gel method in order to improve its thermal and combustion properties. The results of thermo-gravimetric analysis, micro combustion calorimeter, and smoke density test of control showed that the finished cotton fabric had excellent thermal stability and mild combustion behavior with lower heat release rate. Furthermore, the smoke density test also indicated the safety performance of the boron doped silica sol treated cotton fabric in the fire. Source

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