2004•Journal of Polymer Science Part B Polymer PhysicsRequires access

Network structure and swelling–shrinking behaviors of pH‐sensitive poly(acrylamide‐ co ‐itaconic acid) hydrogels

Tuncer Çaykara, Melike Doğmuş, Ömer Kantoğlu

Abstract

Abstract pH‐sensitive poly(acrylamide‐ co ‐itaconic acid) [P(AAm/IA)] hydrogels were prepared by radiation induced copolymerization of acrylamide (AAm) and itaconic acid (IA) at various ratios. Swelling and shrinking behaviors of these hydrogels were found greatly dependent on the composition of the hydrogel and pH of the buffer solution. The basic structural parameters of the P(AAm/IA) networks such as the molecular weight between crosslinks ( M c ) and polymer–solvent interaction parameter (χ) were also determined using the modified Flory‐Rehner equations. © 2004 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 42: 2586–2594, 2004

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Key concepts: Itaconic acid, Self-healing hydrogels, Acrylamide, Swelling, Copolymer, Polymer chemistry, Polymer, Solvent