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	Modified models of polymer phase separation
	Zhou Douglas ; Zhang Pingwen ; E Weinan
	2006
英文摘要	In this paper we discuss continuum models of phase separation in polymer solutions, with emphasis on the thermodynamic foundation of these models. We demand that these models obey a free energy dissipation relation, which in the present context plays the role of the second law of thermodynamics, since the system is isothermal. First, we derive a modified two-fluid model for viscoelastic phase separation from nonequilibrium thermodynamics. Then we study the special case when only diffusion is present, and hydrodynamic effects are neglected. Numerical results demonstrate that our models show better stability properties and at the same time reproduce the expected physical phenomena such as volume shrinking and phase inversion. Our findings suggest that these important phenomena are caused by a diffusional asymmetry of the constituent molecules.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000238693800061&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); EI; PubMed; 10; 6 Pt 1; 061801; 73
语种	英语
出处	EI ; SCI ; PubMed
出版者	physical review e statistical nonlinear and soft matter physics
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/345886]
专题	数学科学学院
推荐引用方式 GB/T 7714	Zhou Douglas,Zhang Pingwen,E Weinan. Modified models of polymer phase separation. 2006-01-01.

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