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Thermal Induced Periodic Phase Separation in Polymer Blends
Zhe Sun ,Hai-hua Song*
Author NameAffiliationE-mail
Zhe Sun School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, China  
Hai-hua Song* School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, China haihuasong@eyou.com  
Abstract:
Simulations were carried out for studying the periodic phase separation of a symmetric binary polymer blend on the basis of Cahn-Hilliard-Cook theory. The time dependent interaction parameter ?(?) was assumed to undergo a step-wise oscillation. The hierarchic structures composed of both large and small domains were obtained. The mechanism of the periodic formation of hierarchic structures was also demonstrated.
Key words:  Periodic spinodal decomposition, Simulations, Hierarchic structures
FundProject:
二元共混聚合物的热诱导周期性相分离
孙喆,宋海华*
摘要:
采用Cahn-Hilliard-Cook理论模拟了二元共混聚合物体系的热诱导周期性相分离.模拟结果显示,共混体系呈现二尺度相分离结构.其中,小尺度相区周期性的产生并消失,而大尺度相区逐渐增长.通过结构因子的演化,讨论了二尺度相分离结构的形成机理,并且考察了相互作用参数的震荡幅度与体系特征尺度的关系.
关键词:  周期性旋节线分解  模拟  层次结构
DOI:10.1360/cjcp2006.19(2).99.3
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