SOME ASPECTS OF MORPHOLOGIES AND INTERFACES IN COPOLYMER/HOMOPOLYMER BLENDS*

JIANG Ming; CAO Xianyi; YU Tongyin

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SOME ASPECTS OF MORPHOLOGIES AND INTERFACES IN COPOLYMER/HOMOPOLYMER BLENDS*

Papers | Updated：2021-06-21

- SOME ASPECTS OF MORPHOLOGIES AND INTERFACES IN COPOLYMER/HOMOPOLYMER BLENDS*
- Vol. 6, Issue 4, Pages: 345-352(1988)
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- Published：20 December 1988
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JIANG Ming, CAO Xianyi, YU Tongyin. SOME ASPECTS OF MORPHOLOGIES AND INTERFACES IN COPOLYMER/HOMOPOLYMER BLENDS*[J]. 1988, 6(4): 345-352.
DOI：

JIANG Ming, CAO Xianyi, YU Tongyin. SOME ASPECTS OF MORPHOLOGIES AND INTERFACES IN COPOLYMER/HOMOPOLYMER BLENDS*[J]. 1988, 6(4): 345-352. DOI：

摘要

Based on a series of morphological studies of blends of homopolymer (Homo) and a variety of block and graft copolymers (Cop)

the nature of phase separation

interface

emulsification and inner morphology of copolymer-dispersed phase etc. in the blends are discussed. In the cases of Cop AB/Homo A/Homo B systems

in which one homopolymer forms matrix

it is observed that the dispersed homopolymer phase is exclusively associated with Cop AB

i.e. no Homo A-Homo B interface exists. This phenomenon is believed to be caused by minimizing the interfacial energy of the systems.Meanwhile

preferential solubilization or anchoring of the like chains of copolymer into homopolymer matrix leads to stabilization of the dispersed phase in the matrix.In addition

regular variation of the inner morphology of the dispersed copolymer phase with the composition and molecular parameters of the component polymers is observed.When the two components have comparable proportions

alternating concentric shells are the most common feature which is associated with minimizing the interfacial energy in the Cop/Homo systems.

Abstract

Based on a series of morphological studies of blends of homopolymer (Homo) and a variety of block and graft copolymers (Cop)

the nature of phase separation

interface

emulsification and inner morphology of copolymer-dispersed phase etc. in the blends are discussed. In the cases of Cop AB/Homo A/Homo B systems

in which one homopolymer forms matrix

it is observed that the dispersed homopolymer phase is exclusively associated with Cop AB

i.e. no Homo A-Homo B interface exists. This phenomenon is believed to be caused by minimizing the interfacial energy of the systems.Meanwhile

preferential solubilization or anchoring of the like chains of copolymer into homopolymer matrix leads to stabilization of the dispersed phase in the matrix.In addition

alternating concentric shells are the most common feature which is associated with minimizing the interfacial energy in the Cop/Homo systems.

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