| 纳米 TiO2的高分子"锚定位"包覆 |
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| 引用本文： | 王世兴,王命泰,雷勇,李广海,张立德.纳米 TiO2的高分子"锚定位"包覆[J].无机材料学报,2000,15(1). |
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| 作者姓名： | 王世兴 王命泰 雷勇 李广海 张立德 |
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| 作者单位： | 中国科学院固体物理研究所,合肥,230031 |
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| 摘 要： | 通过多组分溶液的原位合成方法,成功地制备了ＴｉＯ２／聚苯乙烯－马来酸酐（ＰＳＭＡ）纳米复合材料．红外普图（ＩＲ）分析了这种材料的化学构成,证明纳米ＴｉＯ２与高分子是以共价键的形式存在．随着反应条件的改变,透射电镜（ＴＥＭ）观察到了纳米ＴｉＯ２在复合物中有规律的形貌变化．综合实验结果,提出高分子“锚定位”包覆的作用模型,形象地说明了这种材料以三维网络、纳米晶ＴｉＯ２微相分离的形式存在,同时ＴｉＯ２颗粒的团聚几率在相当大程度上得以降低．结合Ｘ射线衍射,还确定出了复合物中纳米ＴｉＯ２的锐钛矿型结构．
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| 关 键 词： | 共价键 “锚定位”包覆 TiO_2锐钛矿相 |
"Anchor Wrapping" of Polymer up Nanometer-sized TiO2 |
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| WANG Shi-Xing,WANG Ming-Tai,LEI Yong,LI Guang-Hai,ZHANG Li-De."Anchor Wrapping" of Polymer up Nanometer-sized TiO2[J].Journal of Inorganic Materials,2000,15(1). |
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| Authors: | WANG Shi-Xing WANG Ming-Tai LEI Yong LI Guang-Hai ZHANG Li-De |
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| Abstract: | TiO_2/Poly(styrene maleic anhydride) nanocomposites were synthesized in situ viamulti-component solution method. It was found that the composites existed in the formation ofcovalent bonding between TiO_2 and polymer by infrared spectra. The systematical morphologychange of TiO_2 in the composites with different reaction conditions was observed through transmission electron microscope. Based on the mechanism of " anchor wrapping ", the nanocompositeswere in the form of three-dimensional net with the separated nano-crystalline TiO2 micro-phasesinside, and the aggregation of TiO2 grains was successfully inhibitted. The anatase phase of TiO_2was proved by X-Ray diffraction. |
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| Keywords: | covalent bonding " anchor" wrapping TiO_2 anatase phase |
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