✦ LIBER ✦

Synthesis of block copolymers by radical polymerization of end-functional polystyrene

✍ Scribed by Xiao-Min Yang; Kun-Yuan Qiu

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 150 KB
Volume: 64
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19970509)64:6<1169::aid-app17>3.0.co;2-r

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✦ Synopsis

End-functional polystyrenes with an N,N-diethyldithiocarbamyl group were prepared by the photopolymerization of styrene with novel diethyldithiocarbamate derivatives as photoiniferters. Under ultraviolet light, the end-functional polymers could initiate a second monomer to polymerize and form block copolymers, such as polystyrene-bpoly(methyl methacrylate), polystyrene-b-poly(vinyl acetate ), and polystyrene-b-poly(n-butyl acrylate). According to end group analysis and electron spin resonance (ESR) spectroscopy, AB-type block copolymers were produced. The glass transition temperature and thermal stability of the block copolymers were investigated by means of thermal analysis.

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