The effect of fibrous structural difference on thermal insulation properties of biological composites: silkworm cocoons

Jin, Xing, Zhang, Jin, Hurren, Christopher, Li, Jingliang, Rajkhowa, Rangam and Wang, Xungai 2016, The effect of fibrous structural difference on thermal insulation properties of biological composites: silkworm cocoons, Textile research journal, vol. 86, no. 18, pp. 1935-1946, doi: 10.1177/0040517515617427.

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Title The effect of fibrous structural difference on thermal insulation properties of biological composites: silkworm cocoons
Author(s) Jin, Xing
Zhang, JinORCID iD for Zhang, Jin orcid.org/0000-0002-4257-8148
Hurren, ChristopherORCID iD for Hurren, Christopher orcid.org/0000-0002-3274-4675
Li, JingliangORCID iD for Li, Jingliang orcid.org/0000-0003-0709-2246
Rajkhowa, RangamORCID iD for Rajkhowa, Rangam orcid.org/0000-0002-6811-9126
Wang, XungaiORCID iD for Wang, Xungai orcid.org/0000-0002-3549-6769
Journal name Textile research journal
Volume number 86
Issue number 18
Start page 1935
End page 1946
Total pages 12
Publisher Sage
Place of publication London, Eng.
Publication date 2016-11
ISSN 0040-5175
1746-7748
Keyword(s) thermal property
biological structure
silkworm cocoon
numerical simulation
heat transfer
Summary As a biological fibrous structure, silkworm cocoon provides multiple protective functionalities to safeguard the silk moth pupa’s metabolic activity. The mechanism of this protection could be adopted in clothing manufacture to provide more comfortable apparel. In this study, the thermal insulation properties of both domestic Bombyx mori (B. mori) and wild Antheraea pernyi (A. pernyi) cocoons were investigated under both warm and cold environmental conditions. Computational fluid dynamics models have been developed to simulate the heat transfer process through both types of cocoon wall structures. The simulation results show that the wild A. pernyi cocoon reduces the intensity of convection and heat flux between the environment and the cocoon interior and has higher wind resistance than its domestic counterpart. Compared with A. pernyi cocoon, the B. mori cocoon facilitates easy air transfer and decreases the temperature lag when the surrounding conditions are changed. The new knowledge has significant implications for developing biomimetic thermal functional materials.
Language eng
DOI 10.1177/0040517515617427
Field of Research 091205 Functional Materials
Socio Economic Objective 860403 Natural Fibres, Yarns and Fabrics
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Grant ID DP120100139
Copyright notice ©2015, The Authors
Persistent URL http://hdl.handle.net/10536/DRO/DU:30080609

Document type: Journal Article
Collections: Institute for Frontier Materials
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