Thermodynamic interactions of water-soluble homopolymers and double-hydrophilic diblock copolymer

TOPALOĞLU YAZICI D., Askin A., Buetuen V.

Journal of Chemical Thermodynamics, vol.40, no.3, pp.353-361, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 40 Issue: 3
  • Publication Date: 2008
  • Doi Number: 10.1016/j.jct.2007.11.005
  • Journal Name: Journal of Chemical Thermodynamics
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.353-361
  • Keywords: inverse gas chromatography, solubility parameter, hydrophilic (co)polymers, INVERSE GAS-CHROMATOGRAPHY, SOLUBILITY PARAMETERS, COEFFICIENTS, POLYMERS, SOLVENTS, METHYL, ETHYL
  • Eskisehir Osmangazi University Affiliated: Yes


Thermodynamic interaction parameters of water-soluble poly[2-(dimethylamino)ethyl methacrylate] (DMA) and poly[2-(N-morpholino)ethyl methacrylate] (MEMA) homopolymers and their diblock copolymer (DMA-MEMA) were investigated at the temperatures above their glass-transition temperatures (Tg) by inverse gas chromatography (IGC) method. Sorption thermodynamic parameters of some aliphatic, alicyclic and aromatic hydrocarbons, weight fraction activity coefficients, Flory-Huggins interaction parameters, and solubility parameters for hydrocarbons and polymers were calculated. It was observed that sorption thermodynamic parameters on (co)polymers depend on the molecular structures of hydrocarbons. Evaluating both the calculated values of the weight fraction activity coefficients and Flory-Huggins interaction parameters, the solving ability of the hydrocarbons for DMA, MEMA homopolymers, and DMA-MEMA diblock copolymer decreased in the following sequence: Aromatic > alicyclic > aliphatic hydrocarbons. © 2007 Elsevier Ltd. All rights reserved.