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Polymer microgels prepared by emulsifier‐free emulsion polymerization of unsaturated polyesters and styrene
Author(s) -
Yuan CaiDeng,
Xu YongShen,
Wang YanJun,
Liu DeHua,
Chai YanJuan,
Cao TongYu
Publication year - 2000
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/1097-4628(20000929)77:14<3049::aid-app40>3.0.co;2-k
Subject(s) - emulsion polymerization , copolymer , polymer chemistry , styrene , monomer , polymer , polymerization , materials science , polyester , emulsion , chemical engineering , nucleation , chemistry , organic chemistry , composite material , engineering
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. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 3049–3053, 2000