Poly(methacrylamide-co-2-acrylamido-2-methyl-1-propanesulfonic acid) Hydrogels: Investigation of pH- and Temperature-Dependent Swelling Characteristics and Their Characterization


Cavus S.

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, vol.48, no.23, pp.2497-2508, 2010 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 48 Issue: 23
  • Publication Date: 2010
  • Doi Number: 10.1002/polb.22152
  • Title of Journal : JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
  • Page Numbers: pp.2497-2508

Abstract

Novel poly(methacrylamide-co-2-acrylamido-2-methyl-1-propanesulfonic acid) (poly(MAAm-co-AMPS)) hydrogels were synthesized by free radical polymerization of methacrylamide (MAAm) and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) in deionized water at 60 degrees C by using ammonium peroxydisulfate (APS), N, N'-methylenebisacrylamide (MBAAm) and N, N, N', N'-tetramethylethylenediamine (TEMED) as initiator, crosslinker, and activator, respectively. To investigate the effects of feed content on the pH-and temperature-dependent swelling behavior of poly(MAAm-co-AMPS), molar ratio of MAAm to AMPS in feed was varied from 90/10 to 10/90. Structural characterization of gels was performed by Fourier transform infrared (FTIR) spectroscopy using attenuated total reflectance (ATR) technique. Thermal and morphological characterizations of gels were performed by thermogravimetric analysis (TGA) and scanning electron microscopy (SEM), respectively. Although an apparent pH-sensitivity was not observed for the poly(MAAm-co-AMPS) gels during the swelling in different buffer solutions, their temperature-sensitivity became more evident with the increase in AMPS content of copolymer. Thermal stability of poly(MAAm-coAMPS) gels increased with MAAm content. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 2497-2508, 2010