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Wild silkworm cocoon as a natural tough biological composite structure

conference contribution
posted on 01.01.2013, 00:00 authored by Jin Zhang, Jasjeet Kaur, Rangam RajkhowaRangam Rajkhowa, Jingliang LiJingliang Li, X Liu, Xungai WangXungai Wang
Silk cocoons are biological composites with intriguing characteristics that have evolved through a long natural selection process. Knowledge of structure-property-function relationship of multilayered composite silk cocoon shells gives insight into the design of next-generation protection materials. The current investigation studied the composite structure and mechanical performance of a wild silkworm cocoon (Chinese tussah silkworm cocoon, Antheraea pernyi) in comparison with the domestic counterpart (Mulberry silkworm cocoon, Bombyx mori). 180º peel and tensile tests were performed on the cocoon walls to understand both their interlaminar and in-plane mechanical properties. The fracture surfaces were investigated under SEM. The wild cocoon showed substantially higher toughness over the domestic cocoon, which explains their unique capability to tackle severe environmental adversaries.

History

Event

Structural Integrity and Fracture. Conference (8th : 2013 : Melbourne, Victoria)

Pagination

1 - 4

Publisher

RMIT

Location

Melbourne, Victoria

Place of publication

Melbourne, Vic.

Start date

11/07/2013

End date

12/07/2013

ISBN-13

9780646907208

Language

eng

Publication classification

E1 Full written paper - refereed

Copyright notice

2013, RMIT

Editor/Contributor(s)

C Wang

Title of proceedings

Proceedings of the 8th International Conference on Structural Integrity and Fracture 2013

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