电化学法合成壳聚糖-聚苯胺复合涂层的耐蚀性
Anticorrosion Properties of Chitosan-Polyaniline Composite Coatings via Electrochemical Synthesis
摘 要
采用电化学法在304不锈钢表面制备壳聚糖(CTs)-聚苯胺(PANI)复合涂层,利用扫描电镜(SEM),红外光谱仪(FTIR)和X射线衍射仪(XRD)表征CTs-PANI复合涂层的表面形貌,化学组成和晶型。通过极化曲线和电化学阻抗谱研究了CTs-PANI复合涂层的耐蚀性。结果表明:10% CTs-PANI复合涂层在3.5%(质量分数) NaCl溶液中的耐蚀性最佳,在3.5% NaCl溶液中浸泡168 h后,相比于304不锈钢,其腐蚀电流密度下降了2个数量级,腐蚀电位正移近500 mV。该复合涂层对基体材料具有优良的保护作用。
聚苯胺
壳聚糖
耐蚀性
electrochemical synthesis
polyaniline
chitosan
anticorrosion property
Abstract
Chitosan (CTs)-polyaniline (PANI) composite coatings were prepared on the surface of 304 stainless steel by electrochemical synthesis. The surface morphology, chemical composition and crystal structure of the composite coatings were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The anticorrosion properties of CTs-PANI composite coatings were investigated by polarization curves and electrochemical impedance spectra. The results show that the 10%CTs-PANI composite coating had the best corrosion resistance in 3.5% (mass fraction) NaCl solution. After 168 h immersion in 3.5% NaCl solution, the corrosion current density of the 10% CTS-PANI composite coating reduced by about 2 orders of magnitude compared with 304 stainless steel, and the corrosion potential positively shifted close to 500 mV. The composite coatings had an excellent protective effect on substrate materials.
中图分类号 TG174 DOI 10.11973/fsyfh-202208002
所属栏目 试验研究
基金项目 国家自然科学基金(21673135);上海科委项目(17020500700,19DZ2271100,18511110902)
收稿日期 2020/9/26
修改稿日期
网络出版日期
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引用该论文: GUO Anqi,YUN Hong,PENG Li,LING Jingwei,JIANG Fangfang,SHEN Xixun,XU Qunjie. Anticorrosion Properties of Chitosan-Polyaniline Composite Coatings via Electrochemical Synthesis[J]. Corrosion & Protection, 2022, 43(8): 8
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【2】LEI Y H,QIU Z C,TAN N,et al.Polyaniline/CeO2 nanocomposites as corrosion inhibitors for improving the corrosive performance of epoxy coating on carbon steel in 3.5% NaCl solution .Progress in Organic Coatings,2020,139:105430.
【3】万起展,陈宁宁,杨培培,等.聚苯胺/改性石墨复合材料的电化学制备及其防腐蚀性能研究 .中国腐蚀与防护学报,2017,37(5):428-434.
【4】徐惠,刘健,刘嘉悦,等.有机酸二次掺杂超疏水聚苯胺的制备及其耐蚀性 .腐蚀与防护,2018,39(2):107-111.
【5】DEBERRY D W.Modification of the electrochemical and corrosion behavior of stainless steels with an electroactive coating .Journal of the Electrochemical Society,1985,132(5):1022-1026.
【6】ZHANG L,SELLAOUI L,FRANCO D,et al.Adsorption of dyes brilliant blue,sunset yellow and tartrazine from aqueous solution on chitosan:analytical interpretation via multilayer statistical physics model .Chemical Engineering Journal,2020,382:122952.
【7】YU S W,XU X L,FENG J F,et al.Chitosan and chitosan coating nanoparticles for the treatment of brain disease .International Journal of Pharmaceutics,2019,560:282-293.
【8】梁韩英,程晓薇,李俊鹏,等.壳聚糖联合聚合氯化铝强化混凝除藻的参数优化 .中国环境科学,2019,39(6):2568-2576.
【9】WANG X C,YONG H M,GAO L,et al.Preparation and characterization of antioxidant and pH-sensitive films based on chitosan and black soybean seed coat extract .Food Hydrocolloids,2019,89:56-66.
【10】RAJEEV K K,KIM E,NAM J,et al.Chitosan-grafted-polyaniline copolymer as an electrically conductive and mechanically stable binder for high-performance Si anodes in Li-ion batteries .Electrochimica Acta,2020,333:135532.
【11】王秀梅,万晔,范兆荣,等.壳聚糖季铵盐在HCl溶液中对Q235钢的缓蚀性能 .材料保护,2016,49(6):16-21,6.
【12】RIKHARI B,MANI S P,RAJENDRAN N.Electrochemical behavior of polypyrrole/chitosan composite coating on Ti metal for biomedical applications .Carbohydrate Polymers,2018,189:126-137.
【13】赵云琰,张志明,于良民,等.壳聚糖表面接枝聚苯胺的防腐蚀性能 .高分子材料科学与工程,2019,35(4):68-72.
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【16】贾莹.聚苯胺/壳聚糖复合材料的制备及其在微生物燃料电池中产电储能性能研究 .哈尔滨:哈尔滨工程大学,2017.
【17】GAO Y Z,SYED J A,LU H B,et al.Anti-corrosive performance of electropolymerized phosphomolybdic acid doped PANI coating on 304SS .Applied Surface Science,2016,360:389-397.
【18】LIN Y C,ZHONG X X,HUANG H X,et al.Preparation and application of polyaniline doped with different sulfonic acids for supercapacitor .Acta Physico-Chimica Sinica,2016,32(2):474-480.
【19】徐惠,李俊玲,彭振军,等.聚苯胺的电化学制备及电容特性 .高分子材料科学与工程,2013,29(2):9-12.
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【21】YAO Y C,SUN H,ZHANG Y L,et al.Corrosion protection of epoxy coatings containing 2-hydroxyphosphonocarboxylic acid doped polyaniline nanofibers .Progress in Organic Coatings,2020,139:105470.
【22】GEBHARDT F,SEUSS S,TURHAN M C,et al.Characterization of electrophoretic chitosan coatings on stainless steel .Materials Letters,2012,66(1):302-304.
【23】MA B,ZHOU X,BAO H,et al.Hierarchical composites of sulfonated graphene-supported vertically aligned polyaniline nanorods for high-performance supercapacitors .Journal of Power Sources,2012,215:36-42.
【24】WU C,WANG X Y,JU B W,et al.Supercapacitive behaviors of activated mesocarbon microbeads coated with polyaniline .International Journal of Hydrogen Energy,2012,37(19):14365-14372.
【25】胡剑灿,肖敏,李改利.纤维素/壳聚糖复合吸附剂的制备及其对重金属离子吸附的研究.山东化工,2016,45(14):150-152,154.
【26】CHEN W,RAKHI R B,ALSHAREEF H N.Facile synthesis of polyaniline nanotubes using reactive oxide templates for high energy density pseudocapacitors .Journal of Materials Chemistry A,2013,1(10):3315.
【27】LI C M,MU S L.The electrochemical activity of sulfonic acid ring-substituted polyaniline in the wide pH range .Synthetic Metals,2005,149(2/3):143-149.
【28】SABABI M,PAN J S,AUGUSTSSON P E,et al.Influence of polyaniline and ceria nanoparticle additives on corrosion protection of a UV-cure coating on carbon steel .Corrosion Science,2014,84:189-197.
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