双子表面活性剂在苯胺乳液聚合中的应用

Emulsion polymerization of aniline using novel gemini surfactant as emulsifier

以壬基酚、1,4-二溴丁烷和氯磺酸为主要原料,通过三步反应合成了新型的磺酸型双子表面活性剂9BA-4-9BA,并将这种表面活性剂作为乳化剂和掺杂剂应用于苯胺的乳液聚合制备导电聚苯胺。合成的聚苯胺用红外、紫外表征,表明双子表面活性剂9BA-4-9BA对所合成的聚苯胺有良好的掺杂性能。扫描电镜观察发现,当双子表面活性剂与苯胺摩尔比为1.5∶1时,得到的聚苯胺为纤维状,纤维长度大约为50μm。

Novel Gemini surfactant 9BA-4-9BA was synthesized through three-step＇s reaction using nonylphenol, 1, 4-dibromobutane and chloro sulfonic acid as main starting materials used as both surfactant and dopant in the emulsion polymerization of aniline to give conducting polyanilinc.The resulting polyanilines were charcterized by infrared and UV-vis adsorptions.It was found that resulting polyanlione was doped by 9BA-4-9BA, and well-doped conducting polyaniline was received. When the molar ratio of surfactant to aniline was 1.5, synthesized polyaniline possessed fibrillar morphology with the length about 50 μ m.