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- Title
Effect of TiO-Crystal Forms on the Photo-Degradation of EVA/PLA Blend Under Accelerated Weather Testing.
- Authors
Cong, Do; Trang, Nguyen; Giang, Nguyen; Lam, Tran; Hoang, Thai
- Abstract
Photo-degradation of poly (ethylene-co-vinyl acetate) (EVA)/poly (lactic acid) (PLA) blend and EVA/PLA/TiO nanocomposites was carried out under accelerated weather testing conditions by alternating cycles of ultraviolet (UV) light and moisture at controlled and elevated temperatures. The characters, properties, and morphology of these materials before and after accelerated weather testing were determined by Fourier transform infrared spectroscopy, colour changes, viscosity, tensile test, thermogravimetric analysis, and field emission scanning electron microscopy. The increases in the content of oxygen-containing groups, colour changes; the decreases in viscosity, tensile properties, and thermal stability of these materials after accelerated weather testing are the evidence for the photo-degradation of the blend and nanocomposites. After accelerated weather testing, the appearance of many micro-holes and micro-pores on the surface of the collected samples was observed. The photo-degradation degree of the nanocomposites depended on the TiO-crystal form. Rutile TiO do not enhance the degradation, but anatase and mixed crystals TiO nanoparticles promoted the degradation of the nanocomposites. Particularly, the mixed crystals TiO nanoparticles showed the highest photo-catalytic activity of the nanocomposites.
- Subjects
POLYMER blends; TITANIUM dioxide; NANOCOMPOSITE materials; PHOTODEGRADATION; ULTRAVIOLET radiation
- Publication
Journal of Electronic Materials, 2016, Vol 45, Issue 5, p2536
- ISSN
0361-5235
- Publication type
Article
- DOI
10.1007/s11664-016-4409-5