Lower Critical Solution Temperature in Aqueous Solutions of N-Alkyl-Substituted Polyacrylamides.

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  • Platé Nikolai A.
    A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences
  • Lebedeva Tamara L.
    A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences
  • Valuev Lev I.
    A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences

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Description

The structures and properties of N-alkyl-substituted polyacrylamides (PAA) were studied by FT-IR spectroscopy. For N-alkyl-substituted PAA with lower critical solution temperature (LCST), a specific H-bonded cyclic structure involving alkyl amide units of a polymer and hydroxyl functions of water was observed and found responsible for polymer solubility. The mechanism for the appearance of a LCST in aqueous solution of N-alkyl-substituted PAA is discussed and factors of position of LCST are examined.

Journal

  • Polymer Journal

    Polymer Journal 31 (1), 21-27, 1999

    The Society of Polymer Science, Japan

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