Dynamic dilution, constraint-release, and star-linear blends

被引：132

作者：

Milner, ST

McLeish, TCB

Young, RN

Hakiki, A

Johnson, JM

机构：

[1] Exxon Res & Engn Co, Annandale, NJ 08801 USA

[2] Univ Leeds, Dept Phys & Astron, Leeds LS2 9JT, W Yorkshire, England

[3] Univ Sheffield, Dept Chem, Sheffield S3 7HF, S Yorkshire, England

[4] Univ Sheffield, Dept Phys, Sheffield S3 7HF, S Yorkshire, England

来源：

MACROMOLECULES | 1998年 / 31卷 / 26期

关键词：

D O I：

10.1021/ma980481v

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The dynamic dilution theory of stress relaxation, quantitative for star polymer melts, cannot be directly applied to star-linear blends. The linear chains on their reptation time scale tau(d) release constraints on the star arms, resulting in constraint-release Rouse motion for the star arms not described by dynamic dilution. We present a microscopic theory without adjustable parameters for stress relaxation in such blends, which is in excellent agreement with dynamic rheology data for the full range of blend fractions.

引用

页码：9345 / 9353

页数：9

共 21 条

[1] VISCOSITY AND LONGEST RELAXATION-TIME OF SEMI-DILUTE POLYMER-SOLUTIONS .2. THETA-SOLVENT [J].