Article

Thermo-Responsive PNIPAAm Copolymers with Hydrophobic Spacers

  1. Florentina Stoica1,
  2. Aline F. Miller1,
  3. Cameron Alexander2,
  4. Alberto Saiani1,3,*

Article first published online: 2 MAY 2007

DOI: 10.1002/masy.200750505

Issue

Macromolecular Symposia

Macromolecular Symposia

Special Issue: Polymer-Solvent Complexes and Intercalates

Volume 251, Issue 1, pages 33–40, April 2007

Additional Information

How to Cite

Stoica, F., F. Miller, A., Alexander, C. and Saiani, A. (2007), Thermo-Responsive PNIPAAm Copolymers with Hydrophobic Spacers. Macromol. Symp., 251: 33–40. doi: 10.1002/masy.200750505

Author Information

  1. 1

    School of Chemical Engineering and Analytical Science, The University of Manchester, Sackville Street, PO Box 88, Manchester, M60 1QD, UK

  2. 2

    School of Pharmacy, University of Nottingham, University Park, Nottingham, NG7 2RD, UK

  3. 3

    School of Materials, The University of Manchester, Grosvenor Street, Manchester, M1 7HS, UK

*School of Chemical Engineering and Analytical Science, The University of Manchester, Sackville Street, PO Box 88, Manchester, M60 1QD, UK

Publication History

  1. Issue published online: 2 MAY 2007
  2. Article first published online: 2 MAY 2007

Funded by

  • Marie Curie 6th Framework

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Keywords:

  • copolymer;
  • PNIPAAm;
  • thermo-responsive

Abstract

We have synthesised and characterised three sets of acryloyl(amino-acid)/NIPAAm co-polymers. Three different co-monomers were synthesised and copolymerized with N-isopropylacrylamide (NIPAAm) by free radical polymerization in different molar ratios (12:1, 9:1, and 6:1). All series contain aliphatic spacers and are carboxylic terminated. The effect of co-monomer nature and content on the glass transition and the LCST transition in solution has been investigated. The main factor affecting the glass transition and the LCST of the polymer was found to be the side chain length of the co-monomer. The introduction of the co-monomer resulted in an overall increase in the polymer hydrophobicity which led to a decrease of both the polymer glass transition and the LCST transition observed in solution.

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