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纳米银/环化聚丙烯腈复合物的制备与结构表征

, PP. 32-38

Keywords: 纳米银,环化聚丙烯腈,水相沉淀聚合,预氧化,纳米复合物

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Abstract:

采用水相沉淀聚合-原位法合成银/聚丙烯腈(Ag/PAN)复合物,通过测定其相对黏度,系统地考察了反应物配比对Ag/PAN复合物分子量的影响。得到较理想的合成条件为,丙烯腈(AN)单体浓度10%,AgNO3浓度0.6%,K2S2O8浓度2%。将所得复合物进行预氧化后得到纳米银/环化聚丙烯腈(Ag/C-PAN)复合物。通过FTIR分析复合物的组成,并得到不同预氧化温度和时间下复合物的相对环化率。采用TEM、XRD等方法对复合物的微观结构进行表征。结果表明,纳米银均匀地分散于环化聚丙烯腈基体中,银粒子的晶型为面心立方,粒径约为10nm。

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