合成方法对聚苯胺光热转换性能的影响

Effect of Synthesis Method of Polyaniline on Photothermal Conversion Performance

分别采用化学氧化法、快速混合法、界面聚合法制备聚苯胺(PANI)。利用扫描电子显微镜、傅里叶转换红外光谱测试和紫外-可见分光光度法系统地表征聚苯胺的微观形貌以及化学结构,利用波长为808 nm的近红外光照(NIR)实验表征了聚苯胺的光热转换性能,探究微观形貌与光热转换之间的关系,同时进行形状记忆效应测试,探究聚苯胺含量对环氧树脂(EP)体系的影响。结果表明,三种方法制备的聚苯胺都具有光热转换效果,其中,界面聚合法制备的聚苯胺微观形貌最佳,呈均一纤维状,且光热转换效率最高,聚苯胺在EP体系中比例为5 phr时形状记忆回复时间最短。

Polyaniline(PANI)was prepared by chemical oxidation method,rapid mixing method and interfacial polymerization,respectively.The microstructure and chemical structure of PANI was characterized by scanning electron microscope,Fourier transform infrared spectrum testing and ultraviolet-visible spectrophotometry system.Near infrared illumination experiments at the wavelength of 808 nm were also carried out to measure the solar-thermal conversion performance of these three PANIs.The relationship between microstructure and photothermal conversion was discussed.In addition,the shape memory effect was also tested to explore the influence of polyaniline content on EP system.The results show that all of the PANIs prepared by the three methods have photothermal conversion effect.The PANI prepared by interfacial polymerization has the best microstructure and is homogeneous and fibrous,and the photothermal conversion efficiency is the highest.When the ratio of polyaniline in epoxy resin(EP)system is 5 phr,the shape memory recovery time is the shortest.