Studies on the Reactivity Ratios of Styrene and Butyl Acrylate

Chem. J. Chinese Universities ›› 1995, Vol. 16 ›› Issue (10): 1653.

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Studies on the Reactivity Ratios of Styrene and Butyl Acrylate

WU Ping-Ping¹, WU Yu-Fang¹, YANG Quan-Xing¹, HAN Zhe-Wen¹, ZHU Qing-Ren²

1. Department of Polymer Material, East China University of Science and Technology, Shanghai, 200237;
2. Structitre Research Laboratory, University of Science and Technology of China, Academia Sinica

Received:1994-10-12 Revised:1995-04-18 Online:1995-10-24 Published:1995-10-24

Abstract

Abstract: In this study, copolymerizations of styrene(St,M₁) and butyl acrylate(BA,M₂)were carried Out at 60,80, 100, 120 and 140℃ at two sensitive feed compositions. Compositions of copolymers were analyzed by ¹HNMR, Reactivity ratios were calculated by Errorin-Variable method to be r₁=0.688.r₂=0.157; r₁=0.378,r₂=0.174;r₁=0.772,r₂=0. 201; r₁=0.810,r₂=0.216 and r₁=0.851,r₂=0.241 at various polymerization temperatures above. The differences of activation energies between homo-polymerization and copoly merization were obtained to be E₁₁-E₁₂=2.97KJ/mol,E₂₂-E₂₁=6.13KJ/mol, The chain length distribution at 60℃ and Q, e values of BA at 60℃ were also calculated.

Key words: Styrene, Butyl acrylate, Reactivity ratio, Series distribution

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WU Ping-Ping, WU Yu-Fang, YANG Quan-Xing, HAN Zhe-Wen, ZHU Qing-Ren. Studies on the Reactivity Ratios of Styrene and Butyl Acrylate[J]. Chem. J. Chinese Universities, 1995, 16(10): 1653.

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Studies on the Reactivity Ratios of Styrene and Butyl Acrylate

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