Alangari Aljawharah M, Al Juhaiman Layla A, Mekhamer Waffa K
Chemistry Department, King Saud University, Riyadh 12372, Saudi Arabia.
Department of Material Science, Institute of Graduate Studies, Alexandria University, Alexandria 5422004, Egypt.
Polymers (Basel). 2023 Jan 10;15(2):372. doi: 10.3390/polym15020372.
Polymer-Clay Nanocomposite (PCN) coatings were prepared using the solution intercalation method. The raw Khulays clay was treated with NaCl to produce sodium clay (NaC). Thereafter, Cetyl Pyridinium Chloride (CPC) was used to convert NaC into the organic clay form (OC). PCN was prepared by adding polystyrene as the matrix to different weights of OC to prepare 1 wt.% and 3 wt.% PCN. To enhance the coating protection of C-steel in NaCl solution, PCN coatings were added to microcapsules loaded with some corrosion inhibitors PCN (MC). The microcapsules are prepared by the encapsulation of rare-earth metal Ce ions and Isobutyl silanol into polystyrene via the Double Emulsion Solvent Evaporation (DESE) technique. Characterization techniques such as FTIR, X-Ray Diffraction (XRD), and Transmission Electron Microscopy (TEM) were employed. FTIR confirmed the success of the preparation, while XRD and TEM revealed an intercalated structure of 1 wt.% PCN while 3 wt.% PCN has a fully exfoliated structure. Electrochemical Impedance Spectroscopy (EIS), Electrochemical Frequency Modulation (EFM), and Potentiodynamic Polarization showed an enhanced protection efficiency of PCN (MC) coatings. The results demonstrated that the corrosion resistance (R) of 3% PCN (MC) coating was higher than all the formulations. These PCN (MC) coatings may provide corrosion protection for C-steel pipes in many industrial applications.
采用溶液插层法制备了聚合物-粘土纳米复合材料（PCN）涂层。将原始的胡莱什粘土用氯化钠处理以制备钠基粘土（NaC）。此后，使用十六烷基氯化吡啶（CPC）将NaC转化为有机粘土形式（OC）。通过向不同重量的OC中添加聚苯乙烯作为基质来制备PCN，以制备1 wt.%和3 wt.%的PCN。为了增强碳钢在氯化钠溶液中的涂层保护作用，将PCN涂层添加到负载有一些缓蚀剂PCN的微胶囊（MC）中。微胶囊是通过双乳液溶剂蒸发（DESE）技术将稀土金属铈离子和异丁基硅醇封装到聚苯乙烯中制备的。采用了傅里叶变换红外光谱（FTIR）、X射线衍射（XRD）和透射电子显微镜（TEM）等表征技术。FTIR证实了制备的成功，而XRD和TEM显示1 wt.%的PCN具有插层结构，而3 wt.%的PCN具有完全剥离的结构。电化学阻抗谱（EIS）、电化学频率调制（EFM）和动电位极化表明PCN（MC）涂层的保护效率有所提高。结果表明，3%的PCN（MC）涂层的耐蚀性（R）高于所有配方。这些PCN（MC）涂层可为许多工业应用中的碳钢管道提供防腐保护。
