The Bulk Free Radical Copolymerization of Styrene and Maleic Anhydride

Abstract

Abstract: The comPosition of copolymer depended on the concentration of initiator in thebulk free radical polymerization of styrene (St) and maleic anhydride (MA) at 7O ℃. In Iowconcentration of initiator the cornposition of copolymer had nothing to do with the content ofmonomer in the feed. However, in high concentration of initiator the product of polymeriza-tion contained polystyrene and random copolymer. Homopolymerization of styrene took placewhen copolymerization stopped at lower conversion. At the sarne time, copolymer tended to1: 1 alternation with the increasing of content of MAin the feed in the range of 70-160℃.The experimental results indicated that the two sorts of polymerization simultaneously exist-ed if temperature was over 12O℃. The conversion of copolymerization had less dependenceon the temperature and were less than 50%. The composition of copolymers tended to 1: 1alternation as the temperature approached 140℃. The random copolymers of St and MAwere yielded above 140 ℃.

Key words: Styrene, Maleic anhydride, Bulk free radical copolymerization

CLC Number:

O631.1

TrendMD:

DONG Yu-Ping, FENG Lin-Xian, YANG Shi-Lin, SHEN Jia-Cong. The Bulk Free Radical Copolymerization of Styrene and Maleic Anhydride[J]. Chem. J. Chinese Universities, 1997, 18(9): 1537.

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The Bulk Free Radical Copolymerization of Styrene and Maleic Anhydride

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