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蚕丝蛋白—丝胶和丝素凝胶特性的比较 总被引：4，自引：0，他引：4
丝胶的胶凝速度快于丝素,而其凝胶强度较弱．丝胶受到热水的作用会产生凝胶－溶液的相互转化,而丝素不发生此现象．这是两者的结构和组成不同所致．丝素凝胶的β结构明显高于丝胶凝胶．丝素亲水性氨基酸含量少,氢键的形成、分子向β结构转化所需时间长,胶凝速度就慢;而一旦成为凝胶后,由于其β结构、结晶度较高,且在热水中不发生向溶液的转化,故为非可逆性凝胶．相反,丝胶由于亲水性氨基酸含量多,氢键易于形成,向β结构转化而发生胶凝作用,在热水中,氢键极易离解而转化成溶液,故为可逆性凝胶 相似文献
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INTRODUCTION B. mori silk produced by cultivated silkwormis a textile fiber highly appreciated for its out-standing properties (handle, luster, comfort). Inrecent years there has been an increasing interest inexploiting low-temperature plasma treatment (LTP)of textile fibers. Low-temperature plasma treatment is an en-vironmental friendly technique for modifying thefibers surface to improve surface wettability(Molina et al., 2003), shrink resistance (Jin and Dai,2002), interf… 相似文献
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家蚕绢丝腺内丝胶蛋白的横断面为一同心圆的层状结构,茧丝上的丝胶蛋白由于在吐丝牵引过程中被相互拉伸挤压、混杂嵌合或分子链被切断而随机分布于丝素纤维表面,其横断面为一大小分子量的混合结构,并且在取向性、结晶性上呈内高外低的差异;而热水溶出茧丝丝胶蛋白的层状结构是由于丝胶蛋白分子量被降解所致． 相似文献
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Study of the morphology, aggregation structure and properties ofBombyx mori silk treated by low temperatureoxygen plasma showed that slight flutes appeared on the surface of Bombyx mori silk fiber and that its surface structurechanged after plasma treatment. The conformation also changed and crystalline degree decreased. The stannic filling rate oftreated fiber was improved. Because of etching, the weight of the fiber decreased but the breaking strength changed littleafter short-time treatment. 相似文献
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