Structure-property relationships for sulfonated poly(butylene terephthalate)

• Published in: Journal of applied polymer science Vol. 100; no. 6; pp. 4762 - 4771
• Main Authors: Chisholm, Bret J., Richards, William D., Banach, Timothy E., Soloveichik, Sofia, Kelley, James F., Bradtke, Greg R., Dhawan, Sandeep
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 15-06-2006; Wiley
• Subjects: Applied sciences; Exact sciences and technology; ionomers; Organic polymers; Physicochemistry of polymers; plastics; Polycondensation; polyesters; Preparation, kinetics, thermodynamics, mechanism and catalysts; Ionomer; Viscosity; End group; Property composition relationship; plastics; Mechanical properties; Condensation polymerization; Terephthalate copolymer; Experimental study; Ionic interaction; polyesters; Sulfonate copolymer; Intermolecular interaction; Melt crystallization; Ester copolymer; ionomers; Impact strength; Butene terephthalate copolymer; Property structure relationship; Kinetics; Rheological properties
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.23302

Structure–property relationships have been developed for sulfonated poly(butylene terephthalate) copolymers. The compositional variables investigated were sulfonate content, molecular weight, and polymer endgroup composition, and the fundamental polymer properties evaluated were melt viscosity, crystallization kinetics, and impact strength. It was found that all compositional variables significantly affect all of the polymer properties of interest. The most interesting effect is the influence of polymer endgroup composition on polymer properties. The trends indicate that the carboxylic acid endgroups form intermolecular interactions with sodium sulfonate groups, resulting in a decrease in the strength of intermolecular ionic interactions between sodium sulfonate groups. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 4662–4771, 2006