SLIP TRANSITION OF A POLYMER MELT UNDER SHEAR-STRESS

被引：348

作者：

MIGLER, KB ^{[1
]}

HERVET, H ^{[1
]}

LEGER, L ^{[1
]}

机构：

[1] COLL FRANCE, PHYS MAT CONDENSEE LAB, 11 PL MARCELIN BERTHELOT, F-75231 PARIS 05, FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.70.287

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first direct measurements of the local velocity of a sheared polymer melt within the first 100 nm from the solid-liquid interface. For high enough shear rates we observe a sharp transition between weak and strong slip (i.e., a nonzero boundary fluid velocity) in the case of weak polymer-surface interactions [polydimethylsiloxane (PDMS) on silanated silica surfaces]. For strong polymer-surface interactions the slip is strongly reduced. These results are compared to a theoretical model recently proposed by Brochard and de Gennes.

引用

页码：287 / 290

页数：4

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