Synthesis of exfoliated PP/LDH nanocomposites via melt-intercalation: Structure, thermal properties, and photo-oxidative behavior in comparison with PP/MMT nanocomposites

被引:55
作者
Ding, Peng
Qu, Baojun [1 ]
机构
[1] Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China
[2] Univ Sci & Technol China, Dept Polymer Sci & Engn, Hefei 230026, Anhui, Peoples R China
关键词
D O I
10.1002/pen.20568
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Exfoliated polypropylene (PP)/layered double hydroxide (LDH) nanocomposites have been successfully synthesized via melt-intercalation. Their structure, thermal properties, and photo-oxidative behavior have been characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), dynamic mechanical thermal analysis (DMA), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared (FTIR) spectrum. TGA and DMA data show that the PP/LDH nanocomposites have enhanced thermal stability compared with virgin PP and corresponding PP/montmorillonites (MMT) nanocomposites, especially in high temperature range during the thermal decomposition of the samples. XPS and FTIR results give positive evidence that the photo-oxidation mechanism of PP in the PP/LDH materials is not modified compared with that of virgin PP. However, photo-oxidation rate of PP/LDH materials is much lower than that of PP and PP/MMT samples, indicating that the PP/LDH nanocomposites have better UV-stability.
引用
收藏
页码:1153 / 1159
页数:7
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