非均相超声法制备纤维素-聚苯胺导电复合材料及其导电性能研究

Preparation and properties study of cellulose-PANI electric composite materials by heterogeneous ultrasonic method

用非均相超声法制备了纤维素-聚苯胺导电复合材料,通过红外光谱(FT-IR)、扫描电镜(SEM)、和热重(TG)以及四探针仪(SDY-4)对其结构及导电性能进行了表征。经过超声处理的纤维素表面部分细胞初生壁(P)和次生壁外层(S1)脱除,次生壁中层(S2)裸露,表面粗糙。苯胺单体均匀地附着于其表面,并进一步聚合得到颗粒状聚苯胺,有效地抑制了团聚现象的产生。复合材料的热稳定性和导电性都有相应的提高。

Using heterogeneous ultrasonic method,it prepared cellulose-PANI electric composite materials.Its structure and electric properties were characterized by FT-IR,SEM and TG as well as SDY-4.The middle of secondary cell wall（S2） exposed with rough surface after the procedures of removing by part of primary cell wall（P） and outer space of secondary cell wall（S1） from the surface of cellulose which was treated by ultrasonic.Aniline monomer uniform attaches to its surface and polymerizes of PANI particle further.The thermal stability and the conductivity of composite materials have improved correspondingly.