Mechanical Properties of Bombyx mori Silk at Different Temperatures

Abstract

Abstract: The mechanical properties of both raw and degummed Bombyx mori silk fibers were carried out by Dynamic Mechanical Thermal Analyzer(DMTA) at different temperatures under precise temperature control. Both stress strain curve and hysteresis loop of single filament were tested. Moreover, the rupture section morphology and inner structure of raw and degummed Bombyx mori silk were examined by SEM, TEMand Raman spectroscopy. The results showed that the initial modulus as well as rupture strength of Bombyx mori silk decreased with the increase of temperature. It was also found that the stretching process induced more β-structure in silk fiber. In addition, sericin was found to perform a worse mechanical property than fibroin.

Key words: Bombyx mori silk, Sericin, Fibroin, Temperature, Mechanical property

CLC Number:

O631

TrendMD:

YANG Yong, CHEN Xin, ZHOU Ping, YAO Wen-Hua, SHAO Zheng-Zhong . Mechanical Properties of Bombyx mori Silk at Different Temperatures[J]. Chem. J. Chinese Universities, 2001, 22(9): 1592.

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Mechanical Properties of Bombyx mori Silk at Different Temperatures

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