Adhesion performance of polymer nanofibres under shear loading

Zhang, Li, Lin, Tong and Wang, Xungai 2010, Adhesion performance of polymer nanofibres under shear loading, Journal of computational and theoretical nanoscience, vol. 7, no. 10, pp. 2203-2209.

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Title Adhesion performance of polymer nanofibres under shear loading
Author(s) Zhang, Li
Lin, Tong
Wang, Xungai
Journal name Journal of computational and theoretical nanoscience
Volume number 7
Issue number 10
Start page 2203
End page 2209
Total pages 7
Publisher American Scientific Publishers
Place of publication Valencia, Calif.
Publication date 2010
ISSN 1546-1955
1546-1963
Keyword(s) geckos
nanofibre
frictional adhesion
finite element analysis
peel-off force
nanotechnology
fibre science
Summary

Geckos have extraordinary wall-climbing ability because of the millions of hairs with micro/nano fibrillar structures on their feet. Mimicking gecko's feet is of scientific and engineering importance for development of physical adhesion materials and devices. The design of gecko-inspired physical adhesives seems to be geometry dominated. In this study, Finite Element Method (FEM) has been used to analyse the vertical peel-off force of polyporpylene (PP) nanofibres having different fibre dimensions, inclining angels and contact areas on a flat glass substrate. It has been found that the main parameters affecting the frictional adhesion are fibre diameter and fibre aspect ratio, the inclining angle between the fibre and the substrate surface, and the intimate contact areas. Our analysis has shown that PP nanofibres with a diameter of less than 200nm can generate less peel-off force than fibres of larger diameters, indicating more stable adhesion with the glass substrate for thinner fibres. A bent fibre with more intimate contact area can bear more shear force than a straight fibre with less contact area. Also, under the same shear loading, fibres with an inclining angle of less than 30° provide a low peel off force.

Language eng
Field of Research 091205 Functional Materials
Socio Economic Objective 860406 Synthetic Fibres, Yarns and Fabrics
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2010
Copyright notice ©2010, American Scientific Publishers
Persistent URL http://hdl.handle.net/10536/DRO/DU:30032940

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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