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Proceedings Paper

Frictional properties of gel engineering materials with laser surface texturing
Author(s): Naoya Yamada; Jin Gong; M. Hasnat Kabir; Masato Makino; Keisuke Maekawa; Masato Wada; Hidemitsu Furukawa
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Paper Abstract

Several synthesis methods have been devised to improve the mechanical strength of gels extraordinarily after 2001. It was a trigger to use gels as a new industrial materials, since gels had been considered difficult for industrial materials because of their weakness. In a recent study, we had designed transparency shape memory gels for the first time. Shape memory gels are one of the gels with characteristic networks, and have a shape memory function by copolymerizing an acrylic monomer with a hydrophobic long alkyl side group. It is well known that the mechanical properties such as Young’s modulus and friction coefficient of shape memory gels depend on temperature. In this study, we tried to change the frictional properties of shape memory gels by laser surface texturing. Two types of processed surface were prepared. The hexagonal close packed pattern and the square close packed pattern of dimples were formed on the surface of gel sheets with CO2 laser. The intensity of laser was optimized to avoid cutting gels. The friction coefficients of unprocessed gels and two types of processed gels were measured by ball-on-disk method. Measurement partner material was sodalime glass ball. The measurement results of processed gels showed clear differences from unprocessed gels. The friction coefficients of processed gels were larger than unprocessed gels. However, these results specifically showed the velocity dependence. It indicates that surface texturing enable to control the friction coefficient of polymer gels by surface pattern and velocity.

Paper Details

Date Published: 9 March 2014
PDF: 6 pages
Proc. SPIE 9058, Behavior and Mechanics of Multifunctional Materials and Composites 2014, 90580C (9 March 2014); doi: 10.1117/12.2046261
Show Author Affiliations
Naoya Yamada, Yamagata Univ. (Japan)
Jin Gong, Yamagata Univ. (Japan)
M. Hasnat Kabir, Yamagata Univ. (Japan)
Masato Makino, Yamagata Univ. (Japan)
Keisuke Maekawa, Yamagata Univ. (Japan)
Masato Wada, Yamagata Univ. (Japan)
Hidemitsu Furukawa, Yamagata Univ. (Japan)


Published in SPIE Proceedings Vol. 9058:
Behavior and Mechanics of Multifunctional Materials and Composites 2014
Nakhiah C. Goulbourne; Hani E. Naguib, Editor(s)

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