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

Autor: Platé, Nikolai A, Lebedeva, Tamara L, Valuev, Lev I
Zdroj: Polymer Journal; January 1999, Vol. 31 Issue: 1 p21-27, 7p
Abstrakt: 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.
Databáze: Supplemental Index