Synthesis and Properties of Ionically Modified Polymers with LCST Behavior

• Published in: Macromolecules Vol. 31; no. 17; pp. 5616 - 5623
• Main Authors: Hahn, Mathias, Görnitz, Eckhard, Dautzenberg, Herbert
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 25.08.1998
• Subjects: Applied sciences; Copolymerization; Exact sciences and technology; Organic polymers; Physicochemistry of polymers; Preparation, kinetics, thermodynamics, mechanism and catalysts; Solvent effect; Ionomer; Quaternary ammonium copolymer; Second virial coefficient; Acrylamide derivative copolymer; Experimental study; Sedimentation coefficient; Sulfonate copolymer; Cloud point; Mixed solvent; Ionic strength; Preparation; Time curve; Acrylate copolymer; Molecular aggregation; Methacrylate copolymer; Aqueous solution; Radical copolymerization; Saline solution; Carboxylate copolymer; Comparative study; Conformational transition

Ionically modified LCST polymers were synthesized by free radical copolymerization of N-isopropylacrylamide (NIPAM) with various cationic, anionic, and amphoteric comonomers, resulting in products with comparable molecular masses and charge concentrations. The temperature-dependent phase transition...