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- 저자 : Aoqi Zhu (검색결과 1 건)
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Ying Cao,Aoqi Zhu,Jianmin He,Jianhua Wu,Mingjin Xue,Yiting Xu,Birong Zeng,Guorong Chen,Lizong Dai 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.115 No.-
A novel kind of core cross-linked assemblies formed from a ‘‘semi-amphiphilic” block copolymer, poly(syringaldehyde methacrylate)-block-poly (dopamine methacrylate-co-methyl methacrylate-costyrene)(PSMA-b-P(DMA-co-MMA-co-St)), was designed and served as the carrier for anti-corrosiveand corrosion detective molecules. Different from the core cross-linked micelles formed by the amphiphilicpolymers in water, the core cross-linked assemblies in this research were formed from the ‘‘semiamphiphilic”block copolymer, which took advantage of the different compatibility between epoxy andthe blocks in the polymer, leading to the self-assembly behavior happening in the organic resin, whilethey shared the advantages of traditional core cross-linked micelles with the properties of being stable,stimuli-responsive and multifunctional. The pH-responsive properties of the assemblies and their complexationwith Fe3+ caused by the corrosion of the steel were confirmed by UV spectrophotometry andXPS analysis of the corrosive products. The controlled release of corrosion inhibitors was fully reflectedby the expansion of the capacitor ring and the increase of the coating resistance (Rc) with the extensionof the immersion time, which was got via fitting the electrochemical impedance spectroscopy (EIS) datawith the equivalent electric circuits. Ultimately, the anti-corrosive mechanism of smart coating with thefunctional core cross-linked assemblies were also illustrated.
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