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

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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.

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Authors and Affiliations

  1. Institute of Polymers, Bulgarian Academy of Sciences, Acad. G. Bonchev St. 103A, 1113, Sofia, Bulgaria

    Darinka Christova & Sijka Ivanova

  2. Institute of Organic Chemistry, Bulgarian Academy of Sciences, 1113, Sofia, Bulgaria

    Galya Ivanova

Authors
  1. Darinka Christova
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  2. Sijka Ivanova
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  3. Galya Ivanova
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Correspondence to Darinka Christova.

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Christova, D., Ivanova, S. & Ivanova, G. Water-soluble temperature-responsive poly(vinyl alcohol-co-vinyl acetal)s. Polymer Bulletin 50, 367–372 (2003). https://doi.org/10.1007/s00289-003-0178-4

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  • DOI: https://doi.org/10.1007/s00289-003-0178-4

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