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Copolymers of N-vinylcarbazole and N,N-dimethylaminoethyl methacrylate

✍ Scribed by I. Sideridou-Karayannidou; G. Seretoudi

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 226 KB
Volume: 64
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19970531)64:9<1815::aid-app18>3.0.co;2-w

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✦ Synopsis

Copolymers of N-vinylcarbazole (NVC) and N,N-dimethylaminoethyl methacrylate (DMAEMA) were prepared by free-radical polymerization in a toluene solution at 60ЊC using 2,2 -azobisisobutyronitrile (AIBN) as an initiator. The reactivity ratios of both monomers were calculated using the extended Kelen-Tu ¨do ˝s method and found to be r 1 Å 0.441 { 0.052 and r 2 Å 1.632 { 0.102. The microstructure of copolymer chains is described on the basis of first-order Markov statistics. The microstructure of copolymers was also studied by UV and 1 H-NMR spectroscopy. Copolymers were characterized by viscosity and number-average molecular weight ( M V n ) measurements. The glass transition temperatures (T g ) of the copolymers were determined calorimetrically and the variation of T g with the copolymer composition is discussed.

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