Thermal transitions of poly(N-isopropylmethacrylamide) in aqueous solutions

M. Salmerón Sánchez, L. Hanyková, M. Ilavský, M. Monleón Pradas

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

Thermal transitions of poly(N-isopropylmethacrylamide) (PIPMAm) in aqueous solutions were studied in a wide temperature range from -100 to 60°C. The solutions of different polymer weight fractions (c=0.03-1) were investigated in cooling and heating scans of differential scanning calorimetry; four qualitatively different kinds of thermograms were identified in dependence of the fraction, c. The transitions are explained in a thermodynamic framework based on the phase diagram of the system. This diagram provides a complete understanding of thermal transitions in aqueous PIPMAm solutions as a function of c, in particular the existence of non-crystallizable water and the temperature induced phase transition that is due to the hydrophobic interaction in PIPMAm solutions.

Original languageEnglish
Pages (from-to)4087-4094
Number of pages8
Journalpolymer
Volume45
Issue number12
DOIs
Publication statusPublished - May 2004

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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