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Reactivity ratios of free monomers and their charge‐transfer complex in the copolymerization of N ‐butyl maleimide and styrene
Author(s) -
Zhao Youliang,
Li Huaming,
Liu Pengsheng,
Liu Hongwei,
Jiang Jing,
Xi Fu
Publication year - 2002
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/app.2330
Subject(s) - maleimide , copolymer , reactivity (psychology) , styrene , polymer chemistry , monomer , chloroform , chemistry , reaction rate constant , charge transfer complex , proton nmr , kinetics , photochemistry , organic chemistry , polymer , physics , alternative medicine , pathology , medicine , quantum mechanics
As for the charge‐transfer complex (CTC) formed by N ‐butyl maleimide (NMBI) and styrene in chloroform, the complex formation constant was determined by 1 H‐NMR of Hanna–Ashbaugh. The copolymerization of NBMI (NBMI, M 1 ) and styrene (St, M 2 ) in chloroform using AIBN as an initiator was investigated. On the basis of the kinetic model proposed by Shan, the reactivity ratios of free monomers and CTC in the copolymerization were calculated to be r 12 = 0.0440, r 21 = 0.0349, r 1C = 0.00688, r 2C = 0.00476, and the ratios of rate constants were obtained to be k 1C / k 12 = 6.40, k 2C / k 21 = 7.33. In addition, the copolymer was characterized by IR, 1 H‐NMR, DSC, and TGA. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 3007–3012, 2002; DOI 10.1002/app.2330