N ‐Oxyl‐Controlled Radical Copolymerization of Styrene with Ethyl  α ‐Cyanocinnamate | Zendy

Bartsch Andreas | Zendy; SchmidtNaake Gudrun | Zendy

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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.

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