超声化学法制备纳米WO3掺杂聚苯乙烯及其表征
Sonochemical on-line synthesis and characterization of WO3/polystyrene nanocomposite
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摘要: 为了满足惯性约束聚变和电磁内爆实验对靶材料的需求，以W(CO)5/sub>为原料，利用超声化学法在线制备纳米WO3/sub>掺杂聚苯乙烯。所得样品用TEM，XPS，FTIR和TG进行了表征。测试结果表明，钨元素主要以WO3/sub>的形态存在，WO3/sub>粒径分布为20~50 nm，WO3/sub>微粒被聚苯乙烯完全包覆，掺杂后聚苯乙烯的热稳定性提高了70 ℃。在此基础上，对超声化学法的反应机理进行了探讨。研究表明：纳米WO3/sub>与聚苯乙烯分子链有一定的化学键结合，纳米WO3/sub>在聚苯乙烯基体中分布均匀。Abstract: WO3 / polystyrene nanocomposite has been prepared by on-line sonochemical irradiation of an N, N-dimethyll-formamide solution of polystyrene and W(CO)5. WO3 particle sizes are from 20 nm to 50 nm and WO3 particles are distributed evenly throughout polystyrene. The nanocomposite materials are characterized by analytical method such as XPS, TEM, TG and FTIR. On the basis of the obtained data, a possible mechanism of the formation of nanocomposite materials is proposed.
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Key words:
- sonochemical method /
- nanocomposite wo3 /
- wo3 doped polystyrene
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