Premium
N ‐Oxyl‐Controlled Radical Copolymerization of Styrene with Ethyl α ‐Cyanocinnamate
Author(s) -
Bartsch Andreas,
SchmidtNaake Gudrun
Publication year - 2004
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200300253
Subject(s) - styrene , comonomer , copolymer , polystyrene , polymer chemistry , reactivity (psychology) , chemistry , radical polymerization , glass transition , materials science , organic chemistry , polymer , medicine , alternative medicine , pathology
Summary: The block copolymers of styrene and ethyl α ‐cyanocinnamate were prepared in dioxane and xylene with TEMPO‐capped polystyrene (PSTEMPO) as macroinitiator. The copolymerizations were carried out at 125 °C and 135 °C. The reactivity ratios were determined according to Kelen Tüdos and compared with the reactivity ratios from the radical copolymerization of styrene and ethyl α ‐cyanocinnamate determined by Kohn et al. The influence of the comonomer ethyl α ‐cyanocinnamate on the glass transition temperature was studied in comparison with the corresponding homopolystyrene.Plots of conversion versus molecular weight distributions of the polymerizations with styrene at 125 °C.