416141 Multi-Responsive Surface Via Wrinkling

Tuesday, November 10, 2015: 1:12 PM
251E (Salt Palace Convention Center)
Songshan Zeng1, Wenhan Huang2, Andrew Smith1, Helen Nguon1 and Luyi Sun1, (1)Department of Chemical and Biomolecular Engineering and Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT, (2)Heyuan Polytechnic, Heyuan, China

A bilayer film composed of a thin polymer film atop thick elastomer substrate was prepared. Reversible switching between wrinkled and flat surface can be achieved by a facile stretch and release method. This system shows a very high opaqueness as released from a small strain (ca. 5%), which leads to a potential application for smart windows. By altering the chemical composition of the polymer thin film, simply applying moisture can also instantaneously induce a wrinkled surface, which can be reversed as the moisture is removed. The alignment of wrinkle pattern can be achieved through coordinating with mechanical strain. Selective inducing chemical modification on the polymer thin film surface can create patterned wrinkles, which is expected to lead to specific applications.

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See more of this Session: Composites Technology and Processing I
See more of this Group/Topical: Materials Engineering and Sciences Division