Polymer Bulletin

, Volume 50, Issue 5, pp 367–372

Water-soluble temperature-responsive poly(vinyl alcohol-co-vinyl acetal)s

Original article

DOI: 10.1007/s00289-003-0178-4

Cite this article as:
Christova, D., Ivanova, S. & Ivanova, G. Polymer Bulletin (2003) 50: 367. doi:10.1007/s00289-003-0178-4

Summary

In order to obtain novel temperature-responsive copolymers, poly(vinyl alcohol) (PVA) was chemically modified by introducing cyclic acetal functionalities in the polymer chain. The acetalization reaction was carried out with acetaldehyde in water The degree of acetalization was controlled in the range 10–25% by the initial aldehyde concentration. The copolymers obtained were characterized by 1D (1H, 13C, DEPT) and 2D (COSY) NMR techniques as well as by viscometry. The thermo-responsive properties were evaluated by measuring the cloud point temperature (Tcp) of the aqueous copolymer solutions.

Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Darinka Christova
    • 1
  • Sijka Ivanova
    • 1
  • Galya Ivanova
    • 2
  1. 1.Institute of PolymersBulgarian Academy of SciencesSofiaBulgaria
  2. 2.Institute of Organic ChemistryBulgarian Academy of SciencesSofiaBulgaria

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