Photo-oxidation of Polypropylene/Montmorillonite Nanocomposites. 1. Influence of Nanoclay and Compatibilizing Agent
Photo-oxidation of Polypropylene/Montmorillonite Nanocomposites. 1. Influence of Nanoclay and Compatibilizing Agent
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DOI：
10.1021/cm031079k
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发表时间：
2004-01
影响因子：
8.6
通讯作者：
S. Morlat;B. Mailhot;A. Gonzalez;J. Gardette
中科院分区：
文献类型：
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作者：
S. Morlat;B. Mailhot;A. Gonzalez;J. Gardette
研究了聚丙烯/蒙脱土纳米复合材料在60°C、氧气存在下的长波（λ > ~ 300 nm）光氧化反应。通过红外光谱和紫外可见光谱分析了纳米复合材料中聚丙烯（PP）、有机改性蒙脱土（MMt）和增容剂（马来酸酐接枝聚丙烯）的化学修饰过程。我们发现聚丙烯组分的光氧化机制在聚合物-纳米复合材料中没有被改变，但氧化速率被改变，导致材料的耐久性意外下降。
The photo-oxidation of polypropylene/montmorillonite nanocomposites has been studied under irradiation at long wavelengths (λ > 300 nm) at 60 °C and in the presence of oxygen. The chemical modifications resulting from photo-oxidation were followed by IR and UV−visible spectroscopies for each component of these nanocomposites polypropylene (PP), organo-modified montmorillonite (MMt), and the compatibilizing agent (maleic anhydride-grafted-polypropylene). We have found that the mechanism of photo-oxidation of the polypropylene component was not modified in the polymer−nanocomposite, but that the rates of oxidation were modified, leading to an unexpected decrease of the durability of the material.