Citation: . MODELING THE CHAIN CONFORMATION OF POLYMER MELTS IN CONTRACTION FLOW*[J]. Chinese Journal of Polymer Science, ;2003, 21(1): 35-43. shu

MODELING THE CHAIN CONFORMATION OF POLYMER MELTS IN CONTRACTION FLOW*

Received Date: 4 February 2002
Revised Date: 22 March 2002

A constitutive model of quasi-Newtonian fluid based on the type of flow is used in abrupt planar contraction now.The numerical results from finite element analysis are consistent with experimental data for stress patterns and velocityprofiles in the flow field. The chain conformations of polymer melts are then investigated in such a planar contraction byusing the phenomenological model with internal parameters proposed by the author. That is, the shape and orientation of polymer chain coils are predicted and discussed in different flow regions of the contraction flow field that possess simple shear flow,extensional flow,vortical flow,and mixed flow respectively.
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