Biomimetic Fabrication of Polymer Film with High Adhesive Superhydrophobicity by Duplicating Locust Wing Surface  

作　　者：SUN Gang FANG Yan ZHI Heng LI Zhengwen 

机构地区：[1]School of Life Science, Changchun Normal University, Changchun 130032, P. R. China [2]School of Life Science, Northeast Normal University, Changchun 130024, P. R. China

出　　处：《Chemical Research in Chinese Universities》2015年第5期895-898,共4页高等学校化学研究（英文版）

基　　金：Supported by the National Natural Science Foundation of China（No.50875108） and the Natural Science Foundation of Science and Technology Department of Jilin Province, China（No.201115162）.

摘　　要：Locust is a common flying insect. Locust wings were used as biomimetic templates to fabricate multi-functional polymer（polydimethylsiloxane, PDMS） films by soft lithography. The microstructure and wettability of the natural and artificial locust wing surfaces were investigated by means of a scanning electron microscope（SEM） and a video-based contact angle meter. The natural locust wing surface exhibits complicated hierarchical structures and high adhesive superhydrophobicity（contact angle 152°）. The prepared polymer film faithfully reproduces the surface microstructures of the bio-template, and displays a good hydrophobicity and high adhesion（contact angle 144°）. The complex wettability of the natural and artificial locust wing surfaces ascribes to the cooperative effect of hydrophobic composition and multi-dimensional rough microstructures. This work not only promotes our understanding of the wetting mechanism on bio-surfaces, but offers an inexpensive and effective approach for biomimetic fabrication of multi-functional interfacial materials.Locust is a common flying insect. Locust wings were used as biomimetic templates to fabricate multi-functional polymer（polydimethylsiloxane, PDMS） films by soft lithography. The microstructure and wettability of the natural and artificial locust wing surfaces were investigated by means of a scanning electron microscope（SEM） and a video-based contact angle meter. The natural locust wing surface exhibits complicated hierarchical structures and high adhesive superhydrophobicity（contact angle 152°）. The prepared polymer film faithfully reproduces the surface microstructures of the bio-template, and displays a good hydrophobicity and high adhesion（contact angle 144°）. The complex wettability of the natural and artificial locust wing surfaces ascribes to the cooperative effect of hydrophobic composition and multi-dimensional rough microstructures. This work not only promotes our understanding of the wetting mechanism on bio-surfaces, but offers an inexpensive and effective approach for biomimetic fabrication of multi-functional interfacial materials.

关 键 词：BIOMIMETIC SUPERHYDROPHOBICITY ADHESION Polymer film Locust wing 

分 类 号：TQ340.1[化学工程—化纤工业] TH16[机械工程—机械制造及自动化]