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Kinetics of Photosensitized Polymerization of Methyl Methacrylate with Benzoin
Author(s) -
Chen ChihTsung,
Huang WuDer
Publication year - 1969
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.196900009
Subject(s) - chemistry , benzoin , polymerization , carbon tetrachloride , kinetics , methyl methacrylate , chloroform , monomer , degree of polymerization , polymer chemistry , chain transfer , radical polymerization , organic chemistry , polymer , physics , quantum mechanics
The kinetics of photosensitized polymerization of methyl methacrylate with benzoin was investigated. The rate of polymerization was proportional to the square root of the concentration of benzoin and the first power of the monomer. The equation R p = K 1 ([ M ]‐α 1 ) ([ B ] 0.5 +α 2 ) was proposed, and K 1 α 1 and α 2 were evaluated as 0.999×10 −4 , 0.181 and 1.11×10 −2 , respectively. The rate of polymerization was also proportional to the square root of light intensity in accordance with the equation R p =5.65×10 −12 I 0.5 . Carbon tetrachloride and chloroform markedly decreased the average degree of polymerization. The chain transfer coefficients were evaluated as 2.44 × 10 −3 and 1.90 × 10 −3 for carbon tetrachloride and chloroform respectively.