Effects of organic modifications of clay on the ultraviolet-curing behavior and structure of a polyester-acrylate/clay nanocomposite system

摘要

A pristine clay (Na{sup}+ -montmorillonite (MMT) and three different organoclays (20A-MMT, vinyl-benzyl dimethyldodecyl ammonium (VDA)-MMT, and siloxane diamine ammonium (SDA)-MMT) that originated from the pristine clay were used to prepare polyester-acrylate (PEA)/clay nanocomposites by in situ ultraviolet (UV)-curing. Except for the commercial organoclay (20A-MMT), VDA-MMT, and SDA-MMT were prepared in this study by ion exchange method. The effects of organic modifications of the pristine clay on the UV-curing behavior and structure of the nanocomposite system were investigated. The organic modifications of the clay affected considerably the UV-curing behavior and structure of the nanocomposite system.