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Terpolymerization of acrylamide, acrylic acid, and acrylonitrile: Synthesis and properties
Author(s) -
Mathakiya Ismail,
Vangani Veena,
Rakshit Animesh Kumar
Publication year - 1998
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/(sici)1097-4628(19980711)69:2<217::aid-app2>3.0.co;2-q
Subject(s) - acrylonitrile , benzoyl peroxide , polymer chemistry , reactivity (psychology) , acrylic acid , acrylamide , copolymer , intrinsic viscosity , dimethylformamide , viscosity , materials science , solvent , thermogravimetric analysis , chemistry , nuclear chemistry , monomer , polymer , organic chemistry , composite material , medicine , alternative medicine , pathology
Free‐radical solution terpolymerization of acrylamide, acrylic acid, and acrylonitrile was carried out in a mixture of dimethylformamide and water (60 : 40,v/v) at 85°C using benzoyl peroxide as the initiator. The polymers were characterized by elemental analysis, IR, 1 H‐NMR, TGA, and viscosity measurements. Elemental analysis data were used to evaluate the terpolymer composition. The reactivity ratios were determined by Fineman–Ross and Kelen–Tudos methods. The reactivity ratios ( r ) for the copolymerization of (1) acrylic acid + acrylonitrile with (2) acrylamide was found to be r 1 = 0.86 ± 0.09 and r 2 = 1.93 ± 0.03, respectively, by the Kelen–Tudos method. The Fineman–Ross method yielded a value of r 1 = 0.86 ± 0.05 and r 2 = 1.94 ± 0.09, respectively. The activation energy values for various stages of decomposition were calculated from TGA analysis. Voluminosity ( V E ) and the shape factor (ν) were also computed from the viscosity measurements in different ratios of the solvent mixture. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 69: 217–228, 1998