POLYETHYLENETEREPHTHALATE NANOCOMPOSITES WITH HIGH THERMAL STABILITY AND PROCESS OF PREPARING THE NANOCOMPOSITES

摘要

A polyethylene terephthalate nanocomposite is provided to realize improved heat resistance as compared with a nanocomposite using demineralized nanoclay by using an amine-based POSS maintaining an organic moiety at high temperature and dispersed uniformly in the nanocomposite. A polyethylene terephthalate nanocomposite having high heat resistance comprises an amine-based polyhedral oligomeric silsesquioxane(POSS), C59H127NO12Si8, represented by the following formula 1, contains polyethylene terephthalate units in an amount of at least 85 mol%, and has an intrinsic viscosity of 0.50-0.70. In formula 1, R is isooctyl group or isobutyl group. The polyethylene terephthalate nanocomposite preferably comprises the POSS in an amount of 0.5, 0.7, 1.0 or 2.0 wt% based on the total weight.