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Charge transfer copolymerization and properties of isopropyl methacrylate with acrylonitrile and methacrylonitrile
Author(s) -
Bixamaiah B.,
Rao P. Raghunath,
Sundaram E. V.
Publication year - 1992
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.1992.070440812
Subject(s) - copolymer , acrylonitrile , methacrylonitrile , polymer chemistry , materials science , solubility , methacrylate , thermal stability , intrinsic viscosity , chemistry , polymer , organic chemistry , composite material
Isopropyl methacrylate (IPMA) with Acrylonitrile (AN) and Methacrylonitrile (MAN) copolymers of different copositions were prepared at 60°C and 80°C, respectively, using a mixture of n ‐Butylamine ( n BA) and carbon tetrachloride (CCl 4 ) in dimethyl sulphoxide (DMSO) as a charge transfer (CT) initiator. The percentage composition of the copolymers was established by elemental analysis. The copolymerization reactivity ratios were computed by the Kelen–Tudos method. In both the systems, IPMA was found to be more reactive; the copolymers sequence was random in nature. The copolymers were characterized by IR, 1 H‐NMR, 13 C‐NMR spectroscopy and intrinsic viscosity measurements in dimethyl formamide (DMF) at 30±0.1°C. The thermal behavior of the AN‐IPMA copolymers was studied by thermogravimetry (TG) in air. The thermal stability increased, with increasing AN content in the copolymer chain. The solubility parameter of AN‐IPMA copolymer was evaluated by studying the intrinsic viscosity in different solvents. The solubility parameter of the copolymer was found to be 9.7 (cal/cc) 1/2 .