STICK-SLIP TRANSITION AT POLYMER MELT/SOLID INTERFACES

被引:88
作者
DRDA, PP
WANG, SQ
机构
[1] Department of Macromolecular Science, Case Western Reserve University, Cleveland
关键词
D O I
10.1103/PhysRevLett.75.2698
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A striking superfluidlike stick-slip transition is studied and semiquantitatively analyzed for a series of highly entangled linear polyethylene melts subjected to capillary flow. The observed violation of the law of the stick hydrodynamic boundary condition is significant and unambiguous, and can be conveniently characterized by an extrapolation length b. It is shown that b at the transition is independent of temperature and sharply increases with molecular weight in confirmation with a simple scaling relation introduced by de Gennes.
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收藏
页码:2698 / 2701
页数:4
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