✦ LIBER ✦

Polymer microgels prepared by emulsifier-free emulsion polymerization of unsaturated polyesters and styrene

✍ Scribed by Cai-Deng Yuan; Yong-Shen Xu; Yan-Jun Wang; De-Hua Liu; Yan-Juan Chai; Tong-Yu Cao

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 109 KB
Volume: 77
Category: Article
ISSN: 0021-8995
DOI: 10.1002/1097-4628(20000929)77:14<3049::aid-app40>3.0.co;2-k

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✦ Synopsis

In the present work polymer microgels were prepared by emulsifier-free emulsion copolymerization of unsaturated polyesters (UPs) with end carboxyl groups and styrene (St). The nucleation mechanism of UP-St emulsifier-free emulsion polymerization was proposed. The effects of the ratio of the monomers to water, pH, and the ratio of UP to St on the stability of polymerization and the yield of microgels were studied. It was found that the polymer microgels can be used to markedly improve the impact strength of UP.

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