Flow-induced correlation effects within a linear chain in a polymer melt

作     者：R. Stepanyan J. J. M. Slot J. Molenaar M. Tchesnokov 

作者机构：Department of Applied Physics University of Twente P.O. Box 217 7500AB Enschede The Netherlands Material Science Centre DSM Research P.O. Box 18 6160 MD Geleen The Netherlands Faculty of Mathematics and Computer Science Eindhoven University P.O. Box 513 5600 MB Eindhoven The Netherlands Department of Applied Mathematics University of Twente P.O. Box 217 7500AB Enschede The Netherlands 

出 版 物：《Physical Review E》 (物理学评论E辑：统计、非线性和软体物理学)

年 卷 期：2005年第72卷第5期

页      面：051807-051807页

核心收录：

学科分类：07[理学] 070203[理学-原子与分子物理] 0702[理学-物理学] 

主　　题：CONVECTIVE CONSTRAINT RELEASE COX-MERZ RULE MICROSCOPIC THEORY MOLECULARTHEORY CONSTITUTIVE EQUATION ENTANGLED POLYMERS TUBE MODEL STRETCH REPTATION DYNAMICS 

摘      要：A framework for a consistent description of the flow-induced correlation effects within a linear polymer chain in a melt is proposed. The formalism shows how correlations between chain segments in the flow can be incorporated into a hierarchy of distribution functions for tangent vectors. The present model allows one to take into account all the major relaxation mechanisms. Special cases of the derived set of equations are shown to yield existing models and shed some light on the connection between them. Consequences of several assumptions widely used in the literature are analyzed within the developed framework.