Partially hydrolyzed polyacrylamide-poly(N-vinylpyrrolidone) copolymers as superabsorbents synthesized by gamma irradiation

• Published in: Journal of applied polymer science Vol. 68; no. 2; pp. 191 - 203
• Main Authors: Kiatkamjornwong, Suda, Suwanmala, Phiriyathorn
• Format: Journal Article
• Language: English
• Published: New York John Wiley & Sons, Inc 11.04.1998; Wiley
• Subjects: Applied sciences; EOR; Exact sciences and technology; Gamma Irradiation; HPAM-POLY(NVP); Physicochemistry of polymers; Polymerization; Polymers and radiations; Superabsorbent; Absorbent; Terpolymer; Radiochemical polymerization; Experimental study; Property processing relationship; Hydrolysis; Polyelectrolyte; Radiation dose; Chemical modification; Gamma radiation; Preparation; Acrylamide copolymer; Pyrrolidone(vinyl) copolymer; Water absorption; Acrylate copolymer; Successive reaction
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/(SICI)1097-4628(19980411)68:2<191::AID-APP3>3.0.CO;2-L

Partially hydrolyzed polyacrylamide‐co‐poly(n‐vinyl pyrrolidone) used as a superabsorbent was prepared from acrylamide monomers exposed to γ‐rays to become polyacrylamide that was subsequently partially hydrolyzed and was then copolymerized with n‐vinylpyrrolidone to obtain a terpolymeric superabsorbent with a water retention value of 1100 times its dried weight. The total dose and dose rate along with the appropriate degree of hydrolysis were investigated for percentage conversion in each polymerization and the extent of water absorption. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 68:191–203, 1998