一步乳液聚合法制备高溶解性导电聚苯胺

报道了一种高溶解性导电聚苯胺(PANI)的制备方法,以聚2-丙烯酰胺-2-甲基丙磺酸(PAMPS)作为掺杂酸和乳化剂,利用其特有的长链、亲水性及强酸性基团效应,通过乳液聚合法一步合成出具有较高溶解性的导电聚苯胺。利用核磁共振光谱仪(NMR)、傅里叶红外光谱仪(FT-IR)和扫描电子显微镜(SEM)等技术手段对产物结构和性能进行了表征分析。结果表明,在m(苯胺)∶m(AMPS)∶m(APS)=1∶2∶1.5;AMPS质量分数为20%;APS质量分数为30%;反应时间为5 h;反应温度为5℃的条件下,聚苯胺的产率高达86%,在有机溶剂二甲基甲酰胺(DMF)中的溶解度可达0.3814 g/g,在水中的溶解度可达0.2123 g/g,电导率达5.9 S/cm。

A Novel Method of Preparation of High-Solubility Conductive Polyaniline by One-Step Emulsion Polymerization

A novel method for preparation of high-solubility polyaniline(PANI) by one-step emulsion polymerization was reported with poly(2-acrylamide-2-methyl-1 propane sulfonic acid)(PAMPS) as doping acid and emulsifier by utilizing its unique long chain, hydrophilicity, and strong acid group. The structure and properties of the final product were investigated by nuclear magnetic resonance spectroscopy(NMR), Fourier transform infrared spectroscopy(FTIR) and scanning electron microscopy(SEM). The results shows that in the optimal preparation conditions of the reaction time 5 h, the polymerization temperature 5 ℃, the m(AN)∶m(AMPS)∶m(APS)=1∶2∶1.5, the mass fraction of AMPS and APS 20% and 30%, respectively, the yield of PANI is 86%, the electrical conductivity reaches 5.9 S/cm and the solubilities in organic solvent of DMF and water are 38% and over 21%, respectively.