Terpolymerization of acrylamide, acrylic acid, and acrylonitrile: Synthesis and properties

✍ Scribed by Ismail Mathakiya; Veena Vangani; Animesh Kumar Rakshit

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 284 KB
• Volume: 69
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19980711)69:2<217::aid-app2>3.0.co;2-q

✦ Synopsis

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 85ЊC 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 Å 0.86 { 0.09 and r 2 Å 1.93 { 0.03, respectively, by the Kelen-Tudos method. The Fineman-Ross method yielded a value of r 1 Å 0.86 { 0.05 and r 2 Å 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 (n) were also computed from the viscosity measurements in different ratios of the solvent mixture.