Structure and Performance of the Silver-Containing B. mori Silk Fiber
B. mori silk fiber is a kind of natural protein fiber composed of 18 amino acids, one of which, Glycine has some health protecting preperties. However, with improvement of living standards and worsening of the environment, the demand for functional textiles is rising gradually. In this paper, silk fibers were pretreated by tannic acid (TA) solution and then modified by a solution of silver ions. Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) were used to analyze the microstructure and aggregation structure of silk fibers. The amount of silver ions absorbed by silk fibers and the combination characteristics of these ions with silk fibers were investigated by ICP-AES and XPS, respectively. The results showed that the conformation of silk fibers transformed to β-sheet after combined treatment. The crystallinity of silk fibers decreased slightly and their thermo- stability changed little after treatment. Meanwhile, TA-pretreated silk fibers could adsorb and bind significant amounts of silver ions at an alkaline pH. The silver element mainly existed in ionic state and the coordination linkages between silver ions and the fibers afforded modified silk fibers good antibacterial activity and durability.
B. mori silk silver ions tannic acid structure performance
ZHAO Wei-tao LIN Hong CHEN Yu-yue
College of Material Engineering, Soochow University 178 East Gangjiang Road, Suzhou 215021, P .R. Ch College of Material Engineering, Soochow University 178 East Gangjiang Road, Suzhou 215021, P .R. Ch
国际会议
苏州
英文
118-121
2007-09-13（万方平台首次上网日期，不代表论文的发表时间）