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Synthesis and characterization of solid‐phase graft copolymer of polypropylene with styrene and maleic anhydride
Author(s) -
Jia Demin,
Luo Yuanfang,
Li Yanmei,
Lu Hui,
Fu Weiwen,
Cheung W. L.
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(20001227)78:14<2482::aid-app70>3.0.co;2-#
Subject(s) - copolymer , maleic anhydride , polypropylene , styrene , materials science , polymer chemistry , characterization (materials science) , phase (matter) , polymer science , chemistry , composite material , organic chemistry , polymer , nanotechnology
Polypropylene (PP) was modified by solid‐phase graft copolymerization with maleic anhydride (MAH) and styrene (St), using benzoyl peroxide as the initiator and xylene as the interfacial agent. Effects of various factors such as monomer concentration, monomer ratio, initiator concentration on grafting percentage, and acid value were investigated. The graft copolymer was characterized by Fourier transform infrared, pyrolysis gas chromatography—mass spectroscopy, and dynamic mechanical analysis, and the intrinsic viscosity of the extractive from the reaction product was investigated. The results showed that the grafting percentage and acid value of the graft copolymer of PP with two monomers (MAH and St) were considerably higher than those of the graft copolymer of PP with MAH alone. The graft segments were shown to be the copolymer of St and MAH with a substantial molecular weight. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 2482–2487, 2000