Micro- vs. macro-phase separation in binary blends of poly(styrene)-poly(isoprene) and poly(isoprene)-poly(ethylene oxide) diblock copolymers

被引：47
|
作者：
Frielinghaus, H [1 ]
Hermsdorf, N
Almdal, K
Mortensen, K
Messé, L
Corvazier, L
Fairclough, JPA
Ryan, AJ
Olmsted, PD
Hamley, IW
机构：
[1] Riso Natl Lab, Dept Condensed Matter Phys & Chem, DK-4000 Roskilde, Denmark
[2] Univ Sheffield, Dept Chem, Sheffield S3 7HF, S Yorkshire, England
[3] Univ Leeds, Dept Phys & Astron, Leeds LS2 9JT, W Yorkshire, England
[4] Univ Leeds, Sch Chem, Leeds LS2 9JT, W Yorkshire, England
[5] Univ Leeds, Polymer IRC, Leeds LS2 9JT, W Yorkshire, England
来源：
EUROPHYSICS LETTERS | 2001年 / 53卷 / 05期
关键词：
D O I：
10.1209/epl/i2001-00205-7
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this paper we present an experimentally determined phase diagram of binary blends of the diblock copolymers poly(styrene)-poly(isoprene) and poly(isoprene)-poly(ethylene oxide). At high temperatures, the blends form an isotropic mixture. Upon lowering the temperature, the blend macro-phase separates before micro-phase separation occurs. The observed phase diagram is compared to theoretical predictions based on experimental parameters. In the low-temperature phase the crystallisation of the poly(ethylene oxide) block influences the spacing of the ordered phase.
引用
收藏
页码：680 / 686
页数：7
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