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Self‐Compatibilization of poly(butyl methacrylate)/acrylonitrile‐ co ‐styrene blends via concentrated emulsion polymerization
Author(s) -
Li Hangquan,
Ruckenstein Eli
Publication year - 1996
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/(sici)1097-4628(19960926)61:13<2285::aid-app7>3.0.co;2-8
Subject(s) - compatibilization , materials science , copolymer , polymer chemistry , polymerization , emulsion polymerization , methacrylate , acrylonitrile , styrene , monomer , chemical engineering , polymer blend , composite material , polymer , engineering
Two concentrated emulsions in water were prepared: one from weakly polymerized butyl methacrylate (BMA) and the other one from a weakly polymerized mixture of acrylonitrile (AN) and styrene (St). Each of the concentrated emulsions also contained a small amount of a vinyl‐terminated macromonomer (VTM). After the concentrated emulsions were partially polymerized, they were mixed and subjected to complete polymerization. This generated a blend of poly(butyl methacrylate) (PBMA), binary copolymer AN‐ co ‐ST (AN—St), and networks containing chains of VTM and those formed from different monomers. The networks constitute compatibilizers between the PBMA and AN—St. Such a preparation method, in which the components and compatibilizer are generated simultaneously, was called self‐compatibilization. The blend possesses excellent tensile properties and toughness compared with the ternary copolymer AN—St—BMA and with the solution blends of PBMA/AN—St. The generation of the compatibilizers and the compatibilization mechanism were investigated via kinetic studies. The effects of the VTM, polymerization conditions, and the weight ratio of AN/St were also examined. © 1996 John Wiley & Sons, Inc.