The Morphology and Molecular Structure of Acrylate Tri-Copolymer Prepared by Semi-Continuous and Batch Process of Emulsion Polymerization

Abstract

Abstract: The morphology and molecular structure of acrylate emulsion tri-copolymer prepared by both semi-continuous and batch process were : studied. The results: revealed that in semi-continuous copolymerzation process, the particle size and size distribution became larger and wider when import speed of monomers increased, whereas batch one had maximum values of particle size and distribution. For latex polymermerized by batch method, the macromolecular chain with different monomer sequence lengths and distribution existed in the particles, forming "single core-shell structure" , on the - other handy molecular chain of copolymer with homogeneous distrbution of structure units tangled in the particles made by semi-continuous process, forming "multi-core-shell structure" . The synthesized random copolymers revealed microphase separation structure, the faster the import speed of monomers, the greater the separated degree, and it reached a maximum level in batch copolymer.

Key words: Emulsion polymerization, Acrylate copolymer, Microphase separation

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Zhou Xiaoqi, Zhang Kai, Zhou Mingguo, Xu Xi . The Morphology and Molecular Structure of Acrylate Tri-Copolymer Prepared by Semi-Continuous and Batch Process of Emulsion Polymerization[J]. Chem. J. Chinese Universities, 1988, 9(11): 1160.

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The Morphology and Molecular Structure of Acrylate Tri-Copolymer Prepared by Semi-Continuous and Batch Process of Emulsion Polymerization

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