The effect of solvents on spider silk studied by mechanical testing and single-fibre Raman spectroscopy

被引：74

作者：

Shao, ZZ

Young, RJ

Vollrath, F

机构：

[1] Aarhus Univ, Dept Zool, DK-8000 Aarhus C, Denmark

[2] Fudan Univ, Dept Macromol Sci, Shanghai 200433, Peoples R China

[3] Univ Manchester, Inst Sci & Technol, Ctr Mat Sci, Manchester M1 7HS, Lancs, England

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 1999年 / 24卷 / 2-3期

关键词：

Araneus diadematus; Raman spectroscopy; mechanical testing; silk ultrastructure;

D O I：

10.1016/S0141-8130(98)00093-2

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

We used well-defined, fluorescence-free Raman spectra of single silk fibres to study silk ultrastructure. Major ampullate (MA) silk was reeled from the Araneus diadematus spider under controlled conditions. With a custom-built stress-strain gauge, we examined the mechanical properties of this silk both before and after supercontraction in a range of solvents. The solvents were found to modify the material properties considerably. We suggest that the solvents with their different polarities affect different regions of the silk's composite microstructure, in particular the conformation of the molecular chains. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：295 / 300

页数：6