کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5186370 1381102 2006 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A study on the photo-degradation of zinc oxide (ZnO) filled polypropylene nanocomposites
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
A study on the photo-degradation of zinc oxide (ZnO) filled polypropylene nanocomposites
چکیده انگلیسی

This research aims to study the photo-degradation characteristics for zinc oxide (ZnO) nanoparticle filled polypropylene (PP) nanocomposites. By paying attention to the evolution of the carbonyl absorption bands from FTIR analysis, it has been observed that UV irradiation induced significant photo-degradation for unfilled PP. However, with the incorporation of ZnO nanoparticles into the PP matrix, the extent of photo-degradation was significantly reduced. This is due to the superior UV light screening effects offered by the ZnO nanoparticles. WAXD measurements showed that β-form PP crystal had been induced in the PP/ZnO nanocomposites. An interesting observation from this study is that β-form PP crystal was also induced in unfilled PP due to UV irradiation. UV-irradiation induced degradation caused a significant drop in the ductility for unfilled PP. With the incorporation of ZnO nanoparticles, the ductility, and hence the tensile strength were recovered to some extent. The higher the ZnO particle content, the higher the elongation at break value in the UV irradiation treated nanocomposites. It was also observed that surface cracks were induced by photo-degradation, and the Talysurf surface profile measurements indicate that the severity of the surface cracks were significantly reduced in the ZnO/PP nanocomposites.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 47, Issue 9, 19 April 2006, Pages 3207-3217
نویسندگان
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