水溶性掺杂聚苯胺的制备及其性能研究-矿业科学学报.PDF

第35 卷 第6 期 中国腐蚀与防护学报 Vol.35 No.6 2015 年12 月 Journal of Chinese Society for Corrosion and Protection Dec. 2015 水溶性掺杂聚苯胺的制备及其性能研究 吕文静 张颖君 师 超 邵亚薇 王艳秋 孟国哲 哈尔滨工程大学材料科学与化学工程学院 哈尔滨 150001 摘要：通过乳液聚合法制备了聚苯乙烯磺酸(PSSA) 掺杂态聚苯胺，所得聚苯胺产物的水溶性良好。采用红外 光谱、X 射线光电子能谱(XPS) 等手段对其结构及掺杂状态进行了表征，并利用电化学阻抗技术分析了水溶性 聚苯胺在酸性NaCl 溶液中对20#钢的缓蚀性能。结果表明：合成的掺杂态聚苯胺具有较高的导电率；在掺杂 聚苯胺的过程中，PSSA 以两种状态存在，即掺杂态和游离态；PSSA 不仅是提高聚苯胺电导率的掺杂剂，同时 还是诱发其水溶性的稳定剂；水溶性聚苯胺在酸性NaCl 溶液中对20#钢具有较好的缓蚀性能，缓蚀率达80% 以上。 关键词：导电高分子 水溶性聚苯胺 掺杂 XPS 缓蚀 中图分类号：TB37 文献标识码：A 文章编号：1005-4537(2015)06-0519-06 Synthesis and Corrosion Inhibition Performance of Polyatyrolsulfon-acid Doped Polyaniline LV Wenjing, ZHANG Yingjun, SHI Chao, SHAO Yawei, WANG Yanqiu, MENG Guozhe Corrosion and Protection Laboratory, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China Abstract: Polyatyrolsulfon acid doped polyaniline (PSSA-PANI) was synthesized by emulsion po- lymerization method, and then was characterized by IR spectra and XPS. The synthesized PSSA- PANI exhibited good solubility in water. The corrosion inhibition performance of the PSSA-PANI on mild steel was examined in acidic NaCl solutions by means of electrochemical impedance spec- troscopy (EIS). The results revealed that PSSA-PANI had a high conductivity. In the synthesized PSSA-PANI, PSSA existed in two states, namely doped-state and free-state, PSSA can improve not only the conductivity but also the water solubility of PANI. The PSSA-PANI showed good corro- sion inhibition for 20# steel in acidic NaCl media with an inhibition efficiency over 80%. Key words: conductive