复合功能磺酸掺杂聚苯胺的结构与性能  

Properties and structure of polyaniline co-doped with multiple functionalized sulfonic acids

作　　者：马利[1] 黄可龙[1] 陈超[2] 卢苇[2] 陈奉强[2] 

机构地区：[1]中南大学化学化工学院,湖南长沙410083 [2]重庆大学化学化工学院,重庆400044

出　　处：《中南大学学报（自然科学版）》2008年第3期464-468,共5页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(20176066)

摘　　要：以过硫酸铵为氧化剂,采用乳液法合成不同摩尔比的十二烷基苯磺酸(DBSA)与磺基水杨酸(SSA)复合功能磺酸共掺杂的聚苯胺(PAn),并通过X射线衍射(XRD)、热重分析(TGA)、红外光谱(FI-IR)、电子顺磁共振谱(ESR)以及溶解性实验对产品的结构和性能进行分析表征。研究结果表明:当掺杂体系中n(DBSA)-n(SSA)=1-3时,所得的PAn样品的电导率高达3.57 S/cm;复合功能磺酸掺杂所得PAn的结晶性能、热稳定性能、掺杂程度以及溶解性能比单功能磺酸掺杂所得PAn的高;电子顺磁共振谱结果表明,复合功能磺酸掺杂PAn为自由电子自旋模型,属典型的PAn盐形式。Polyaniline（PAn） co-doped with dodecylbenzenesulfonic acid （DBSA） and sulfosalicylic acid（SSA） was synthesized by emulsion polymerization method using ammonium persulfate （APS） as the oxidant. The properties and structure of the PAn were analyzed and characterized by X-ray diffraction （XRD）, thermogravimetric analysis （TGA）, Fourier-transform-infrared （FT-IR） spectra, electron spin resonance （ESR） analysis and solubility experiment. The results show that when n（DBSA）：n（SSA）=1：3 in the synthesizing media, the conductivity of PAn obtained reaches 3.57 S/cm, and the thermal stability, the crystallinity, the solubility and the doping degree of the PAn doped with the multiple functionalized sulfonic acids are better than those of the PAn doped with single functionalized sulfonic acids. The ESR analysis indicates that the spin of the PAn doped with multiple functionalized sulfonic acids is of the free electron type, and the sample is found to be typically of the PAn salt type.

关 键 词：聚苯胺 复合功能磺酸 掺杂 乳液聚合法 

分 类 号：O631.1[理学—高分子化学]