Synthesis and characterization of pH-responsive mesoporous chitosan microspheres loaded with sodium phytate for smart water-based coatings

被引：31

作者：

Liu, Xiaojie ^{[1
,2
]}

Li, Weihua ^{[1
]}

Wang, Wei ^{[1
]}

Song, Liying ^{[1
]}

Fan, Weijie ^{[1
,2
]}

Gao, Xiang ^{[1
]}

Xiong, Chuansheng ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2018年 / 69卷 / 06期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

anti-corrosion; chitosan microspheres; pH-responsive; self-healing; water-based coating; SELF-HEALING COATINGS; CORROSION-INHIBITOR; RELEASE; PROTECTION; NANOCONTAINERS; MICROCAPSULES; NANOPARTICLES; NANOCAPSULES; DELIVERY; CARRIERS;

D O I：

10.1002/maco.201709840

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mesoporous micro- or nanocontainers have been indicated to be potential carriers of corrosion inhibitors to modify water-based coatings for self-healing properties and excellent anti-corrosion performance. In this work, the eco-friendly mesoporous chitosan microspheres loaded with green corrosion inhibitor sodium phytate were incorporated in self-healing water-based polyacrylate coating. The microspheres with mesoporous surface, uniform size, and promising pH responsiveness were prepared via the water-in-oil (W/O) emulsion chemical cross-linking method. On this basis, chitosan microspheres loaded with 25.79wt% sodium phytate were obtained by negative pressure impregnation method and the pH-responsive was demonstrated by the electrochemical impedance spectroscopy (EIS). The results of EIS and seawater immersion tests revealed that artificial defected water-based polyacrylate coating containing 5wt% chitosan microspheres showed high anti-corrosion performance and exhibited self-healing capabilities due to the release of corrosion inhibitor sodium phytate.

引用

页码：736 / 748

页数：13

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