Photo-degradation Studies of Zinc Oxide Filled Polypropylene Nanocomposites

摘要

With the rapid developments in polymer matrix nanocomposites, there is growing interest in understanding their behaviors under adverse service conditions. A simple literature search will show the tremendous number of publications on montmorillonite (MMT) filled nanocomposites. It is therefore natural to see that the degradation behaviors for MMT filled nanocomposites have also received a number of detailed studies [1-10]. It was observed that by introducing MMT particles into LDPE [5] and PP [6, 7] matrices, the rate of photo-oxidative degradation was much faster than the corresponding unfilled matrixes. Furthermore, the dispersion state of the MMT particles did not seem to have influence on the photo-degradation rate [5].