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Origin of the variability of the mechanical properties of silk fibres: 2 the nanomechanics of single silkworm and spider fibres

机译:蚕丝纤维机械性能变异性的起源:2单蚕和蜘蛛纤维的纳米力学

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摘要

The variability in mechanical stress-strain behaviour of various silks obtained from Bombyx mori silkworm and Nephila madagascarensis spider fibres has been studied by high resolution Raman analysis using the Raman shift induced by application of a controlled strain on the νN-H mode as a probe. Silk fibres exhibiting typical 1, 2, 3 and 4 Types have been selected from their characteristic tensile stress-strain behaviour. A perfect relationship between the nanomechanic (at the scale of the chemical bond) and macroscopic (silk single fibre) behaviour is observed as in the case of other polyamide fibres (natural keratin and synthetic PA66).
机译:通过高分辨率拉曼分析,使用在νN-H模式下施加受控应变引起的拉曼位移,通过高分辨率拉曼分析,研究了从家蚕和马达加斯加蜘蛛丝获得的各种蚕丝的机械应力-应变行为的变异性。从典型的拉伸应力-应变特性中选择了表现出典型的1、2、3和4类型的丝纤维。在其他聚酰胺纤维(天然角蛋白和合成PA66)的情况下,可以观察到纳米力学(在化学键的范围内)和宏观(丝绸单纤维)行为之间的完美关系。

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