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Graft copolymerization of poly(vinyl chloride) with styrene. II. Thermal behavior
Author(s) -
Sharma K. K.,
Varma I. K.
Publication year - 1980
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1980.070250611
Subject(s) - copolymer , thermogravimetric analysis , polyvinyl chloride , polystyrene , polymer chemistry , grafting , thermal stability , vinyl chloride , cationic polymerization , styrene , materials science , polyene , polymer , chemistry , organic chemistry , composite material
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.