Target Patterns in Phase Separation Induced by Cross-Linking : Condensed Matter: Structure, etc.
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概要
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We introduce a quite simple model for a phase-separating binary mixture where one of the components is cross-linked. It is shown by computer simulations that target patterns are generated. We use a Cahn-Hilliard equation with a bulk free energy density which varies as a molecular weight changes with time. Target patterns are obtained in the following way. We first quench the system, having an off-critical composition, into a spinodal region, and find that disconnected droplets emerge in the system. With cross-linking one of the components, the phase diagram of the system shifts to a location where a bicontinuous structure is formed. As a result, target patterns grow from the droplets without any additional nuclei.
- 社団法人日本物理学会の論文
- 2001-03-15
著者
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Motoyama Miho
Department Of Physics And Graduate School Of Humanities And Sciences Ochanomizu University
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Yamazaki Yoshihiro
Institute For Nonlinear Sciences And Applied Mathematics Graduate School Of Sciences Hiroshima Unive
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Ohta Takao
Institute For Nonlinear Sciences And Applied Mathematics Graduate School Of Science Hiroshima Univer
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