CHARACTERISTICS OF POLYMERIZATION-FILLED POLYCAPROLACTAMS

A polymerization filling of a base in character monomer (epsilon-capro lactam) was carried out using fillers with solid acid character and ca talytic action such as gamma-alumina and calcium phosphate. The proper ties and structure of the polymerization-filled polycaprolactam obtain ed were studied. The following characteristics were determined: meltin g temperature, glass transition temperature, crystallization temperatu re, tensile strength, and dynamic elastic modulus. The advantages of t he polymerization filling method are shown as compared to conventional methods for homogeneous production of polycaprolactam. (C) 1997 John Wiley & Sons, Inc.