MECHANICAL PROPERTIES OF ANTHERAEA PERNYI SILK AT CRYOGENIC TEMPERATURES
Tough materials are usually preferred by structural engineers compared to their strong but less extensible counterpart, because they are able to absorb a large amount of energy before breaking and avoid catastrophic failure of the structure. To improve the toughness of polymers, rubbers are frequently blended with plastics by various ways. The obtained multicomponents polymer materials can serve under circumstances of low temperature or high speed impact. However, if the environment temperature drops below the brittle temperature (T_(br)) of the rubber component, the rubber-toughened material still breaks in a brittle manner. In contrast, Mother Nature has more professional approaches to produce tough materials. Spider dragline silks are found to be even tougher at very low temperature or extremely high strain rate than at normal testing conditions. Here, Antheraea pernyi (A. pernyi) silk (one of animal silks from wild silkworms) was employed as a model material to understand the relationship between structure and mechanical properties of animal silks at cryogenic temperatures.
Chengjie Fu Zhengzhong Shao
Key Laboratory of Molecular Engineering of Polymers of Ministry of Education, Advanced Materials Laboratory, Department of Macromolecular Science, Fudan University, Shanghai 200433, P.R.China
国际会议
PP’2010，Jinan International Symposium on Polymer Physics(2010济南国际高分子物理学术研讨会)
济南
英文
118-119
2010-06-06（万方平台首次上网日期，不代表论文的发表时间）