Article

Synthesis and Properties of Poly(N-isopropylacrylamide-co-acrylamide) Hydrogels

  1. Jie Chen,
  2. Yong Pei,
  3. Li-Ming Yang,
  4. Li-Li Shi,
  5. Hao-Jie Luo

Article first published online: 2 JUN 2005

DOI: 10.1002/masy.200550709

Issue

Macromolecular Symposia

Macromolecular Symposia

Special Issue: Polymers in Novel Applications

Volume 225, Issue 1, pages 103–112, May 2005

Additional Information

How to Cite

Chen, J., Pei, Y., Yang, L.-M., Shi, L.-L. and Luo, H.-J. (2005), Synthesis and Properties of Poly(N-isopropylacrylamide-co-acrylamide) Hydrogels. Macromol. Symp., 225: 103–112. doi: 10.1002/masy.200550709

Author Information

  1. Department of Chemical Engineering and Technology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 201800, China

Publication History

  1. Issue published online: 2 JUN 2005
  2. Article first published online: 2 JUN 2005

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Keywords:

  • hydrogel;
  • ionic strength;
  • LCST;
  • pH-sensitive;
  • Poly(N-isopropylacrylamide-co-acrylamide)

Abstract

Poly (N-isopropylacrylamide-co-acrylamide) [Poly(NIPAAm-co-AAm)] with different feed ratios were obtained by radiation polymerization using Co60γ-rays. Swelling equilibrium data in various media: deionized water, aqueous NaCl solutions and different pH buffer solutions, were determined. It appeared that the lower critical transition temperature (LCST) of the hydrogels increased with an increasing acrylamide content and decreased with increasing ionic strength. Moreover, LCST was affected by pH.

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