SURFACE PHASE-TRANSITION IN A POLYMER BLEND

被引：26

作者：

BRUDER, F ^{[1
]}

BRENN, R ^{[1
]}

机构：

[1] FREIBURGER MAT FORSCHUNGSZENTRUM,FREIBURG,GERMANY

来源：

EUROPHYSICS LETTERS | 1993年 / 22卷 / 09期

关键词：

D O I：

10.1209/0295-5075/22/9/012

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

When measuring the surface segregation towards the vacuum in films of an asymmetric blend of deuterated polystyrene (dPS) and poly(styrene-4-co-bromostyrene) (PBr(x)S) (N(dPS) : N(PBrxS) = 3.76) a jump in the surface excess z* of dPS was observed when the binodal of the blend was approached from the one-phase region. This jump can be interpreted as surface phase transition, if gradient terms are included in the bare surface free energy F(S) of the blend. Such gradient terms have been recently proposed in theoretical work on polymer blends and surfaces.

引用

页码：707 / 712

页数：6

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