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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Dual-Mode Antifouling Ability of Thiol-Ene Amphiphilic Conetworks: Minimally Adhesive Coatings via the Surface Zwitterionization
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Dual-Mode Antifouling Ability of Thiol-Ene Amphiphilic Conetworks: Minimally Adhesive Coatings via the Surface Zwitterionization

机译:硫醇双亲两性网络的双模防污能力:通过表面两性离子化的最小粘附力涂层

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摘要

A series of antibiofouling amphiphilic conetwork (APCN) coatings combined with zwitterionic features are engineered by surface zwitterionization of spontaneously segregated poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA) segments, where this dual-mode surface integration of both passive and active modes improves the entire antifouling efficiency against the adsorption of proteins and a widespread marine fouling organism (Phaeodactylum tricornutum). A clear difference in surface morphology and topography before and after surface zwitterionization is ascribed to the transformation of PDMAEMA to carboxlbetaine zwitterion, which promotes the phase segregation and simultaneously accelerates the migration of hydrophilic segments toward the surface. The surface morphology evolved with hydrophilic content, and the variation trend of surface roughness before and after surface zwitterionization is exactly opposite under different hydrophilic content. With regard to structure- antibiofouling relationships, the zwitterionic surface with heterogeneous morphology as well as higher zwitterion content exhibits superior antibiofouling efficiency. This design provides a novel methodology for the development of heterogeneous and zwitterionic antibiofouling conetwork, which will not only act as a breakthrough for the design and synthesis of next generation of efficient and eco-friendly antibiofouling coating but also expand the synthesis method of APCN so as to explore its application fields.
机译:通过自发分离的聚(N,N-二甲基氨基乙基甲基丙烯酸甲酯)(PDMAEMA)段的表面两性离子化,设计了一系列结合了两性离子特征的抗污两亲共网络(APCN)涂料,在该方法中,无源和有源模式的这种双模式表面整合得以改善完整的防污效率,可抵抗蛋白质和广泛的海洋污垢生物(Phaeodactylum tricornutum)的吸附。在表面两性离子化之前和之后,表面形态和形貌的明显差异归因于PDMAEMA向羧基甜菜碱两性离子的转化,这促进了相分离并同时加速了亲水链段向表面的迁移。表面形态随亲水含量的变化而变化,在不同亲水含量下,两性离子化前后的表面粗糙度变化趋势完全相反。关于结构-抗生物结垢关系,具有异质形态和较高两性离子含量的两性离子表面表现出优异的抗生物结垢效率。该设计为开发异质两性离子防污垢网络提供了一种新颖的方法,不仅将为下一代高效,环保的防污涂料的设计和合成提供突破,而且还将扩展APCN的合成方法,从而探索其应用领域。

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