不同pH值条件下蜘蛛丝收缩与延展性能的变化  

Change of spider silk tension properties under different pH conditions

作　　者：汪波[1] 于金迪 郑安妮 贾甜甜 周思雨 陈鑫[1] 颜亨梅 

机构地区：[1]北京师范大学珠海分校,广东珠海519087

出　　处：《生物学杂志》2015年第2期33-35,69,共4页Journal of Biology

基　　金：国家自然科学基金资助项目(No.31372159;No.31172107)

摘　　要：研究不同p H值条件下,蜘蛛丝拉伸性能的变化。在酸性条件下,设置p H值梯度,比较经丝、纬丝的拉伸性能;使用同样方法,在碱性条件下,比较经丝、纬丝的拉伸性能。将实验数据应用统计学中的单因素方差分析方法分析。结果表明不同p H值对这两类蛛丝的拉伸性能的变化均有显著影响:在酸性条件下,随着p H值的升高,经丝和纬丝收缩度逐渐升高;在碱性条件下,随着p H值的升高,其收缩度逐渐降低。当p H值为7时,经丝和纬丝的收缩度最高,分别为经丝(27.00±0.60)%,纬丝(28.30±0.31)%。The change of spider silk tension properties under different pH conditions was explored in the laboratory .The result indica-ted that the pH conditions had a significantly affection on tensile properties of radial silk and spiral silk .Under acid condition , the shrinkage degree increased gradually with the increase of pH value , the higher pH condition , the higher shrinkage degree .The shrink-age degree of radial silk reached to （27.00 ±0.60 ）%, while spiral silk reached to （28.30 ±0.31 ）%, when pH value is was equal to 7.As under alkaline condition , the shrinkago degree of radial silk showed an opposite tendency .The shrinkage degree showed clear negative correlation to the alkaline solution′s pH value .

关 键 词：PH值 蜘蛛丝 经丝 纬丝 拉伸性能 

分 类 号：TS102.33[轻工技术与工程—纺织工程]