AMINOLYSIS OF POLY(ETHYLENE TEREPHTHALATE) IN AQUEOUS AMINE AND AMINE VAPOR

摘要

Poly(ethylene terephthalate) fibers were aminolyzed in n-butylamine vapor and aqueous n-butylamine. Both aminolysis reactions resulted in weight loss, reduction of molecular weight and tensile strength, and some increase in density. After extraction in chloroform, weight loss of the aminolyzed samples increased due to removal of oligomers which had not been removed during aminolysis or rinsing. Differences between vapor and aqueous aminolysis are discussed in terms of previously described stages of aminolysis. Scanning electron photomicrographs revealed that the surface of vapor-aminolyzed fibers developed axial cracks while the surface of aqueous-aminolyzed fibers contained cracks in the radial direction. (C) 1996 John Wiley & Sons, Inc. [References: 9]