湿热处理对蚕丝纤维二级结构的影响  

Effects of Heat-moisture Treatment on the Secondary Structure of Silk Protein

作　　者：张聚华[1] 李顺[1] 李秀艳[1] 傅吉全[1] 

机构地区：[1]北京服装学院材料科学与工程学院,北京市服装材料研究开发与评价重点实验室,北京100029

出　　处：《北京服装学院学报（自然科学版）》2012年第4期20-26,共7页Journal of Beijing Institute of Fashion Technology：Natural Science Edition

基　　金：北京服装学院科研项目(2010A-02;2011A-08);文化部科技创新项目(40-2010);北京市教委资助项目(KM200810012003)

摘　　要：利用红外光谱(FTIR-ATR)、X-射线衍射(XRD)等手段研究了湿热处理条件下蚕丝织物蛋白质二级结构的变化.结果表明:湿度为90%的湿热作用下,纤维的结构变化首先发生在无定形区域.伴随β-折叠结构含量的增加,纤维的结晶度也逐渐增大,4 d左右达到最大值;而无定形结构的含量呈现先降低而后增大的趋势.氨基酸含量测定表明丝氨酸的流失是造成纤维黄化的主要原因.The protein secondary structure for silk fabric under heat-moisture processing conditions were studied by means of infrared spectroscopy （FTIR-ATR） , X-ray diffraction （XRD）. The resuits show that the crystallinity degree rise alone with the increasing of the β-sheet content at 90% humidity and at about 4 days the value is maximum, for the chemical reactions occuring in the non-crystalline regions. The content for the random coin structure was first decreasing and then increasing after 4 days. The amino acids content reveals that the loss of serine is perhaps the main reason for the silk fabric yellowing.

关 键 词：蚕丝 湿热处理 二级结构 

分 类 号：TS146.53[轻工技术与工程—纺织材料与纺织品设计]