水溶性掺杂聚苯胺的制备及其性能研究

doi:10.11902/1005.4537.2014.199

中国腐蚀与防护学报

2015, Vol. 35

Issue (6): 519-524 DOI: 10.11902/1005.4537.2014.199

研究报告

本期目录 | 过刊浏览

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

Synthesis and Corrosion Inhibition Performance of Polyatyrolsulfon-acid Doped Polyaniline

Wenjing LV,Yingjun ZHANG,Chao SHI,Yawei SHAO(

),Yanqiu WANG,Guozhe MENG

Corrosion and Protection Laboratory, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China

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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

Abstract：

Polyatyrolsulfon acid doped polyaniline (PSSA-PANI) was synthesized by emulsion polymerization 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 spectroscopy (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 corrosion inhibition for 20# steel in acidic NaCl media with an inhibition efficiency over 80%.

Key words： conductive polymer water-soluble PSSA-PANI doped XPS corrosion inhibition

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引用本文:

吕文静,张颖君,师超,邵亚薇,王艳秋,孟国哲. 水溶性掺杂聚苯胺的制备及其性能研究[J]. 中国腐蚀与防护学报, 2015, 35(6): 519-524.
Wenjing LV, Yingjun ZHANG, Chao SHI, Yawei SHAO, Yanqiu WANG, Guozhe MENG. Synthesis and Corrosion Inhibition Performance of Polyatyrolsulfon-acid Doped Polyaniline. Journal of Chinese Society for Corrosion and protection, 2015, 35(6): 519-524.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2014.199 或 https://www.jcscp.org/CN/Y2015/V35/I6/519

图1 PSSA掺杂PANI产物的红外光谱图

表1 不同An/—SO3H摩尔比制备的掺杂态PANI产物的溶解度

表2 PSSA溶液及不同合成条件制备的PANI的电导率

图2 PANI的分子结构式

图3 2#及4# PANI-PSSA试样的N1s谱

表3 2#和4# PANI-PSSA试样的元素分析

表4 2#和4# PANI-PSSA试样的N1s分析

图4 2#及4# PANI-PSSA试样的S2p谱

图5 20#碳钢在有无添加PANI的3.5%NaCl溶液中浸泡200 h的EIS谱

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