Wetting transition in a binary polymer blend

被引：23

作者：

Rysz, J

Budkowski, A ^{[1
]}

Bernasik, A

Klein, J

Kowalski, K

Jedlinski, J

Fetters, LJ

机构：

[1] Jagiellonian Univ, Smoluchowksi Inst Phys, PL-30059 Krakow, Poland

[2] Jagiellonian Univ, JCCASR, PL-30059 Krakow, Poland

[3] Univ Min & Met Krakow, Surface Spect Lab, PL-30059 Krakow, Poland

[4] Weizmann Inst Sci, Dept Mat & Interfaces, IL-76100 Rehovot, Israel

[5] ExxonMobil Res & Engn Co, Annandale, NJ 08801 USA

来源：

EUROPHYSICS LETTERS | 2000年 / 50卷 / 01期

关键词：

D O I：

10.1209/epl/i2000-00231-y

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have used composition depth profiling, based on nuclear-reaction analysis and secondary ion mass spectroscopy, to study segregation at the free surface of a partly miscible binary mixture consisting of random oleifinic copolymers. The equilibrium surface excess data, analysed within a mean-field Cahn approach, point to a wetting transition. The surface phase diagram obtained was confirmed by the observed dynamics of the segregation from a coexistence composition: the monotonic and halted growth of the surface layer was observed at temperatures above and below the predicted wetting point, respectively.

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页码：35 / 40

页数：6

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