含芳香结构聚天冬氨酸衍生物的合成及缓蚀性能研究  

Synthesis and corrosion inhibition performance of polyaspartic acid derivative containing aromatic groups

作　　者：柴春晓 徐燕华 杨星[1] 张盼盼 赵梦琪 许英[1] 张磊[1] CHAI Chunxiao;XU Yanhua;YANG Xing;ZHANG Panpan;ZHAO Mengqi;XU Ying;ZHANG Lei(College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China)

机构地区：[1]河南大学化学化工学院,河南开封475004

出　　处：《化学研究》2018年第6期621-628,共8页Chemical Research

基　　金：广东省有序结构材料的制备与应用重点实验室开放课题基金(KLPAOSM201704)

摘　　要：以聚琥珀酰亚胺(PSI)、N-(3-氨丙基)咪唑和2-苯乙胺为原料,合成了一种含有咪唑和苯环结构的聚天冬氨酸衍生物(PASP-D),利用电化学极化、阻抗及失重法,系统研究了PASP-D在0.5 mol/L H_2SO_4溶液中对碳钢的缓蚀性能.结果表明,PASP-D是一种混合型缓蚀剂,但以抑制阴极反应为主.在较低的浓度下,PASP-D即可显著地抑制碳钢在0.5 mol/L硫酸溶液中的腐蚀.热力学研究表明,PASP-D在碳钢表面的吸附包含物理作用和化学作用.A polyaspartic acid derivative(PASP-D)containing aromatic groups was synthesized by the ring-opening reaction of polysuccinimide,N-(3-aminopropyl)imidazole and2-phenylethylamine.Corrosion inhibition efficiencies of PASP-D for carbon steel in0.5mol/L H2S04solution were investigated by potentiodynamic polarization measurement and electrochemical impedance spectroscopy,as well as weight loss method.The results show that PASP-D is a mixed corrosion inhibitor based mainly on cathodic inhibition.At lower concentrations,PASP-D can significantly inhibit the corrosion of carbon steel in0.5mol/L H2S04solution.Thermodynamic results show that the adsorption of PASP-D on carbon steel surfaces involves both physical and chemical processes.

关 键 词：聚天冬氨酸 改性 缓蚀 吸附 电化学 

分 类 号：O63[理学—高分子化学]