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Self-Assembled Structures in Blends of Block Copolymer A-block-B with Homopolymer A: SAXS and SANS Study

✍ Scribed by Jaroslav Holoubek; Josef Baldrian; František Lednický; Šárka Málková; Jyotsana Lal

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
341 KB
Volume
207
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Summary: The study describes the investigation of the microphase‐separated morphology of a block copolymer A‐block‐B with the parent homopolymer A, where A is polystyrene and A‐block‐B is poly(perdeuterated styrene)‐block‐poly(methyl methacrylate) (__d__PS‐block‐PMMA). The microdomain morphology and phase behavior in blends of __d__PS‐block‐PMMA with polystyrene of $\overline M _{\rm w}$ = 8 000 and 35 000 were investigated. Binary blends of the diblock copolymer and homopolymers were prepared with various amounts of homopolymers. The criterion for “wet and dry brush” taking into account different solubilization of homopolymer has been applied to explain the changes in microdomain morphology during the self‐assembling process.
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