Synthesis and characterization of solid-phase graft copolymer of polypropylene with styrene and maleic anhydride

被引：0
|
作者：
Jia, Demin [1 ]
Luo, Yuanfang [1 ]
Li, Yanmei [1 ]
Lu, Hui [1 ]
Fu, Weiwen [1 ]
Cheung, W.L. [2 ]
机构：
[1] Dept. of Poly. Mat. Sci. and Eng., South China University of Technology, Guangzhou, China
[2] Department of Mechanical Engineering, University of Hong Kong, Hong Kong, Hong Kong
来源：
| 2000年 / John Wiley & Sons Inc, New York卷 / 78期
关键词：
Fourier transform infrared spectroscopy - Gas chromatography - Mass spectrometry - Molecular weight - Monomers - Polypropylenes - Pyrolysis - Styrene - Viscosity;
D O I：
10.1002/1097-4628(20001227)78:143.0.CO;2-%23
中图分类号：
学科分类号：
摘要：
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.
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