MISCIBILITY IN COPOLYMER/HOMOPOLYMER BLENDS

JIANG Ming

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MISCIBILITY IN COPOLYMER/HOMOPOLYMER BLENDS

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- MISCIBILITY IN COPOLYMER/HOMOPOLYMER BLENDS
- Vol. 6, Issue 3, Pages: 193-198(1988)
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- Published：20 September 1988
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JIANG Ming. MISCIBILITY IN COPOLYMER/HOMOPOLYMER BLENDS[J]. 1988, 6(3): 193-198.
DOI：

JIANG Ming. MISCIBILITY IN COPOLYMER/HOMOPOLYMER BLENDS[J]. 1988, 6(3): 193-198. DOI：

摘要

In order to study the miscibility of a copolymer with its corresponding homopolymers

varieties of multicomponent polymers including simple graft

muhibranch

diblock

triblock and four-arm block copolymers and so-called ABCPs were synthesized and characterized. The morphologies of the blends comprising the copolymers and the corresponding homopolymers were examined by electron microscopy. It is concluded that besides molecular weight

architecture of a copolypaers has apparent effect on the miscibility

i.e. the more complex is molecular architecture

the greater is conformation restriction in microdomain formation and the less is solubility of homopolymer in corresponding domains.In addition

a density gradient model is suggested for describing the segment distribution of the bound and free chains in block-homopolymer systems.Using this model

Helfand's theory is extended to the blends of copolymer and homopolymer predicting the miscibility which is in good agreement with the experimental results.

Abstract

In order to study the miscibility of a copolymer with its corresponding homopolymers

varieties of multicomponent polymers including simple graft

muhibranch

diblock

architecture of a copolypaers has apparent effect on the miscibility

i.e. the more complex is molecular architecture

the greater is conformation restriction in microdomain formation and the less is solubility of homopolymer in corresponding domains.In addition

a density gradient model is suggested for describing the segment distribution of the bound and free chains in block-homopolymer systems.Using this model

Helfand's theory is extended to the blends of copolymer and homopolymer predicting the miscibility which is in good agreement with the experimental results.

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