摘要
采用原位聚合法制备导电的聚苯胺(PAn)/高岭土复合物,当苯胺/高岭土投料质量比为15/100时,复合物的电导率达0.92 S/cm.考察了制备工艺和原料配比对产物导电性能的影响.对复合物的导电性、密度、SEM和表面接触角的研究表明,反应体系中高岭土的存在,一方面阻碍了部分单体的聚合反应,另一方面由于苯胺在其表面的吸附和聚合,使得复合物在PAn含量较低时呈现较高的电导率.XRD的研究说明,单体尚未进入高岭土的层状结构内.
Conductive polyaniline-kaolinite composites were prepared by in-situ chemically oxidative polymerization of aniline in the presence of kaolinite. When the feeding mass ratio of aniline to kaoli-nite is 15/100, the composites showed a high conductivity of 0.92 S/cm. The composites were characterized in terms of their conductivity, morphology and structure by contact angle, SEM, IR and XRD. The results of characterization confirmed that polyaniline was formed mainly on the surface of the kaolinite particle due to the adsorption of aniline, which resulted in high conductivity. However the yield of polyaniline was lowered and the reaction rate decreased obviously, as compared with the bulk polymerization of aniline without kaolinite.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2003年第2期66-70,共5页
Journal of South China University of Technology(Natural Science Edition)
