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Graft copolymerization of poly(vinyl chloride) with styrene. II. Thermal behavior

✍ Scribed by K. K. Sharma; I. K. Varma

Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
315 KB
Volume
25
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

Thermal behavior of graft copolymers of polyvinyl chloride with polystyrene prepared by using a cationic initiator (AlCl~3~) was evaluated by measurement of rates of dehydrochlorination in nitrogen atmosphere. With increase in the extent of grafting the rates were found to decrease. Dynamic thermogravimetric analysis revealed an overall improvement in thermal stability of copolymers. Development of polyene sequences in degraded polymer samples was evaluated by measurement of electronic absorption spectra. In comparison to PVC, graft copolymer samples had fewer conjugated double bonds.

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