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Title:Shrinking-induced instability in gels
Author(s):Chaïeb, Sahraoui; Sato-Matsuo, Eriko; Tanaka, Toyoichi
Subject(s):Polymer gels
phase transitions
Abstract:Polymer gels can undergo a volume phase transition (either continuous or discontinuous) when an external condition such as temperature or solvent composition is altered. This phase transition is either a shrinking or a swelling. We investigate the instability of a tubular fluid gel after shrinking. When gels are immersed in a solvent, the polymer network undergoes a diffusion inducing an osmosis pressure through the gel. A bubble and a bamboo pattern were observed under such conditions (E. Sato-Matsuo and T. Tanaka, Nature, 358, 482 (1992)). In this paper we investigate these pattern formations as a mechanical instability.
Issue Date:2000-07
Publisher:Department of Theoretical and Applied Mechanics (UIUC)
Series/Report:TAM Reports 952
Genre:Technical Report
Publication Status:published or submitted for publication
Peer Reviewed:is peer reviewed
Date Available in IDEALS:2007-03-08
Is Version Of:Published as: Toyoichi Tanaka, Shao-Tang Sun, Yoshitsugu Hirokawa, Seiji Katayama, John Kucera, Yoshihara Hirose and Takayuki Amiya. Mechanical instability of gels at the phase transition. Nature, Vol. 32, 2002, pp.796-798. DOI: 10.1038/325796a0. Copyright 2002 Nature Publishing Group.

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  • Technical Reports - Theoretical and Applied Mechanics (TAM)
    TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.

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