A novel emulsion route to sub-micrometer polyaniline/nano-ZnO composite fibers

作者：He, YJ^*

来源：Applied Surface Science, 2005, 249(1-4): 1-6.

DOI：10.1016/j.apsusc.2004.11.061

• polyaniline
• ZnO nanoparticles
• composites
• sub-micrometer fibers
• pickering emulsion

With a average diameter of 700-900 nm and a length of 20-35 mu m, sub-micrometer fibers of polyaniline/nano-ZnO composites (PANI/nm-ZnO) were synthesized in a toluene/water emulsion stabilized by ZnO nanoparticles. It was found that the morphology of the resulting PANI/nrn-ZnO composites depended on the volume ratio of toluene to water (R) in the reaction mixture. When R was in the range of 0.03-0.07, stable Pickering emulsion was formed and the oxidative polymerization of aniline was confined at the toluene/water interface, generating sub-micrometer PANI/nm-ZnO fibers. When R = 0.11 and 0.01, the composites with dendritic and polyhedral morphology, respectively, were formed. TEM, XRD, FrIR and TGA etc. were used to characterize the sub-micrometer fibers. It was found that the structure of PANI in the composite fibers was identical to that of the amorphous emeraldine form. The sub-micrometer fibers showed hydrophilic features and their conductivity was higher than that of the PANI/nm-ZnO composites with dendritic or polyhedral morphology.

• 出版日期2005-8-15
• 单位西安科技大学