Facile Synthesis of Poly(vinyl alcohol)/伪-Titanium Phosphate Nanocomposite with Markedly Enhanced Properties

详细信息    查看全文

• 作者：Chenlu Bao ; Yuqiang Guo ; Lei Song ; Hongdian Lu ; Bihe Yuan ; Yuan Hu
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2011
• 出版时间：October 5, 2011
• 年：2011
• 卷：50
• 期：19
• 页码：11109-11116
• 全文大小：1033K
• 年卷期：v.50,no.19(October 5, 2011)
• ISSN：1520-5045

文摘

Nanocomposites based on poly(vinyl alcohol) and 伪-titanium phosphate were prepared by the solvent-cast method. The 伪-titanium phosphate nanosheets were homogeneously dispersed in the poly(vinyl alcohol) matrix, and marked property enhancements were obtained. In thermogravimetric analysis, the maximum decomposition temperature of the nanocomposites was increased by 80 掳C, and the value of maximum decomposition was reduced by 60%. The storage modulus and tensile strength were improved by 64% and 84%, respectively. According to microscale combustion calorimetry, the ignition temperature (89 掳C) and the temperature for peak heat release rate (192 掳C) were significantly increased, whereas the peak heat release rate was sharply reduced (79%). The property enhancements are mainly due to strong hydrogen bonds between the poly(vinyl alcohol) and 伪-titanium phosphate nanolayers, as well as the molecule-movement-restricting and physical-barrier effects due to the 伪-titanium phosphate nanolayers. In addition, the effects of the water content and 伪-titanium phosphate amount on the electrical conductivity of poly(vinyl alcohol) nanocomposites were investigated.