期刊
POLYMER DEGRADATION AND STABILITY
卷 133, 期 -, 页码 101-107出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2016.08.008
关键词
Polypropylene; Nanocomposites; TiO2 nanotubes; Photoaged polypropylene
资金
- Proyecto DICYT [051641ZR_DAS]
- Vicerrectoria de Investigacion, Desarrollo e Innovacion, Universidad de Santiago de Chile
- SANTANDER Scholarship Programa de Apoyo a la Educacion Superior Santander Universidades
- Ministerio de Economia y Competitividad, Madrid, Spain
Composites of polypropylene (PP) were synthesized by the melting process in the presence of titanium dioxide nanotubes (TiO2-Ntbs). Nanotubes were used either as synthesized or organically modified with hexadecyltrimethoxysilane (Mod-TiO2-Ntbs). The photoageing of the neat PP and PP-TiO2-Ntbs was studied during 10 days. The nanotubes incorporated into the PP promoted and accelerated its photo degradation due to reactive species generated during irradiation. PP-Mod-TiO2-Ntbs composites with 8% of modified nanotubes produced the highest degradation according to chemiluminescence analysis (CL), carbonyl index (CI), degree of crystallinity (%chi), and thermogravimetric analysis (TGA). Furthermore, SEM analysis after photoageing the polymers presented several cavities of ca. 5 mu m. (C) 2016 Elsevier Ltd. All rights reserved.
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