US EPA

6762930 

Journal Article 

Determination of chain transfer constant to dodecanethiol in styrene methyl methacrylate and butyl acrylate methyl methacrylate copolymerization and effect of chain length on composition and stereochemical configuration of copolymers 

de La Fuente, JL; Madruga, EL; , 

1998 

Yes 

Journal of Polymer Science. Part A, Polymer Chemistry
ISSN: 0887-624X
EISSN: 1099-0518 

JOHN WILEY & SONS INC 

NEW YORK 

36 

16 

2913-2925 

English 

10.1002/(SICI)1099-0518(19981130)36:16<2913::AID-POLA10>3.0.CO;2-3 

WOS:000076837300010 

https://www.scopus.com/inward/record.uri?eid=2-s2.0-0032206971&doi=10.1002%2f%28SICI%291099-0518%2819981130%2936%3a16%3c2913%3a%3aAID-POLA10%3e3.0.CO%3b2-3&partnerID=40&md5=9156684737af6a36379881fb39587295
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Free radical copolymerization of styrene/methyl methacrylate (S/MMA) and butyl acrylate/methyl methacrylate (BA/MMA) in the presence of n-dodecanthiol (DDT) has been studied at 60 degrees C in a 3 mol/L benzene solution using 2,2'-azobis(isobutyronitrile) (AIBN) as initiator. Overall chain transfer constant to DDT has been determined far both copolymerization systems, as a function of monomer feed composition using complete molecular weight distribution and the Mayo method. Overall transfer coefficients have values which are dependent on both monomer feed composition and individual comonomer transfer values. Composition, sequence distribution, and stereoregularity of copolymers obtained are, in our experimental conditions, independent of copolymer molecular weight. (C) 1998 John Wiley & Sons, Inc. 

Butyl acrylate-methyl methacrylate; Chain transfer constants; Dodecanethiol; Stereochemical configuration; Styrene-methyl methacrylate