Multi-responsive hydrogels based on N-isopropylacrylamide and sodium alginate

Authors

  • Raluca P Dumitriu,

    Corresponding author
    1. ‘Petru Poni’ Institute of Macromolecular Chemistry, Physical Chemistry of Polymers Department, 41A Gr. Ghica Voda Alley, 700487 Iasi, Romania
    • ‘Petru Poni’ Institute of Macromolecular Chemistry, Physical Chemistry of Polymers Department, 41A Gr. Ghica Voda Alley, 700487 Iasi, Romania.
    Search for more papers by this author
  • Geoffrey R Mitchell,

    1. Centre for Advanced Microscopy and Polymer Science Centre, University of Reading, Whiteknights, Reading RG6 6AF, UK
    Search for more papers by this author
  • Cornelia Vasile

    1. ‘Petru Poni’ Institute of Macromolecular Chemistry, Physical Chemistry of Polymers Department, 41A Gr. Ghica Voda Alley, 700487 Iasi, Romania
    Search for more papers by this author

Abstract

Hydrogels consisting of sodium alginate and N-isopropylacrylamide covalently crosslinked with N,N′-methylenebisacrylamide were prepared. The mixed-interpenetrated networks obtained were characterized using elemental analysis, Fourier transform infrared and Raman spectroscopy, swelling measurements and environmental scanning electron microscopy. The thermo- and pH-responsive properties of these hydrogels were evidenced by their swelling behaviour, which depended also on the amount of crosslinking agent and hydrogel composition. Copyright © 2010 Society of Chemical Industry

Ancillary