Q.T. Nguyen

TL;DR: Sulfonated polyethersulfone cardo was prepared by solvent-free reaction of concentrated sulfuric acid on the polymer as mentioned in this paper, which can be sulfonated to different degrees by control of the reaction temperature and time.

TL;DR: In this paper, the pervaporation of three ethyl esters (aroma model compounds) in aqueous solutions was studied with poly(ether-blockamide) copolymer (PEBA) membranes of different compositions.

TL;DR: In this paper, a simple mechanistic approach has been developed in order to circumvent these limitations; it is based on the assumption that insertion of a solvent molecule into the polymer solvent matrix will be governed by the intrinsic affinity of the solvent for either a polymer segment or an already sorbed solvent molecule.

TL;DR: In this article, a water saturated PVAc membrane contains non-freezable (bound) and liquid-like water molecules in equivalent amounts (ca. 1.6 wt%); membrane infrared studies during the sorption process indicated that water penetration first in the membrane as monomeric molecules which aggregate later to form clusters.

TL;DR: In this paper, the Flory-Huggins theory was applied to ternary mixtures with constant interaction parameters and negligible elastic contribution, and it was shown that the theory offers reasonable prediction for apolar liquids in an elastomeric matrix (system 1), while approximate isotherm patterns with significant discrepancies are obtained with apolar liquid in a thermoplastic (system 2).