Self-healing mineralization and enhanced anti-corrosive performance of polyurethane CaCO3 composite film via β-CD induction

A novel organic composite coating was successfully fabricated through in situ mineralizing in artificial seawater for a lasting anti-corrosive coating. The mineralized composite films make full use of the advantages including rich hydroxyl group and special ring structure of β-cyclodextrin as well a...

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Main Authors:	Yang Hua, Xueliang Li, Li Ma, Yihang Wang, Huagao Fang, Haibing Wei, Yunsheng Ding
Format:	Article
Language:	English
Published:	Elsevier 2019-09-01
Series:	Materials & Design
Online Access:	http://www.sciencedirect.com/science/article/pii/S0264127519302941

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spelling	doaj-f53d7f4572b542879b162464169daa992020-11-25T01:27:36ZengElsevierMaterials & Design0264-12752019-09-01177Self-healing mineralization and enhanced anti-corrosive performance of polyurethane CaCO3 composite film via β-CD inductionYang Hua0Xueliang Li1Li Ma2Yihang Wang3Huagao Fang4Haibing Wei5Yunsheng Ding6Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, PR ChinaAnhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, PR China; Corresponding author.Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, PR ChinaAnhui Province Key Laboratory of Advance Functional Materials and Devices, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, PR ChinaAnhui Province Key Laboratory of Advance Functional Materials and Devices, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, PR ChinaAnhui Province Key Laboratory of Advance Functional Materials and Devices, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, PR ChinaAnhui Province Key Laboratory of Advance Functional Materials and Devices, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, PR China; Corresponding author.A novel organic composite coating was successfully fabricated through in situ mineralizing in artificial seawater for a lasting anti-corrosive coating. The mineralized composite films make full use of the advantages including rich hydroxyl group and special ring structure of β-cyclodextrin as well as superior adhesion and high flexibility of waterborne polyurethane coating. The results show the β-CD remarkably promotes the mineralization of CaCO3 on WPU substances through the effective adsorption and complexation of hydrophobic cavity to calcium ions. The dense organic-inorganic composite film exhibits outstanding anti-corrosive performance with corrosion rate of 1.39 × 10−3 mm/year for 3CD-WPU sample, being much less than 7.36 × 10−2 mm/year for WPU coating under same conditions. The excellent anti-corrosion performance is mainly attributed to the uniform nucleation site provided by CD-WPU and further formation of dense CaCO3 film. Furthermore, the radial distribution function and adsorb energy theoretic analysis by molecular dynamic simulation definitely reveal and support the mechanism of β-CD promoting the CaCO3 mineralization. Keywords: Mineralization, Anti-corrosive coating, Molecular dynamic simulation, Marine environment, Self-healinghttp://www.sciencedirect.com/science/article/pii/S0264127519302941
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Yang Hua Xueliang Li Li Ma Yihang Wang Huagao Fang Haibing Wei Yunsheng Ding
spellingShingle	Yang Hua Xueliang Li Li Ma Yihang Wang Huagao Fang Haibing Wei Yunsheng Ding Self-healing mineralization and enhanced anti-corrosive performance of polyurethane CaCO3 composite film via β-CD induction Materials & Design
author_facet	Yang Hua Xueliang Li Li Ma Yihang Wang Huagao Fang Haibing Wei Yunsheng Ding
author_sort	Yang Hua
title	Self-healing mineralization and enhanced anti-corrosive performance of polyurethane CaCO3 composite film via β-CD induction
title_short	Self-healing mineralization and enhanced anti-corrosive performance of polyurethane CaCO3 composite film via β-CD induction
title_full	Self-healing mineralization and enhanced anti-corrosive performance of polyurethane CaCO3 composite film via β-CD induction
title_fullStr	Self-healing mineralization and enhanced anti-corrosive performance of polyurethane CaCO3 composite film via β-CD induction
title_full_unstemmed	Self-healing mineralization and enhanced anti-corrosive performance of polyurethane CaCO3 composite film via β-CD induction
title_sort	self-healing mineralization and enhanced anti-corrosive performance of polyurethane caco3 composite film via β-cd induction
publisher	Elsevier
series	Materials & Design
issn	0264-1275
publishDate	2019-09-01
description	A novel organic composite coating was successfully fabricated through in situ mineralizing in artificial seawater for a lasting anti-corrosive coating. The mineralized composite films make full use of the advantages including rich hydroxyl group and special ring structure of β-cyclodextrin as well as superior adhesion and high flexibility of waterborne polyurethane coating. The results show the β-CD remarkably promotes the mineralization of CaCO3 on WPU substances through the effective adsorption and complexation of hydrophobic cavity to calcium ions. The dense organic-inorganic composite film exhibits outstanding anti-corrosive performance with corrosion rate of 1.39 × 10−3 mm/year for 3CD-WPU sample, being much less than 7.36 × 10−2 mm/year for WPU coating under same conditions. The excellent anti-corrosion performance is mainly attributed to the uniform nucleation site provided by CD-WPU and further formation of dense CaCO3 film. Furthermore, the radial distribution function and adsorb energy theoretic analysis by molecular dynamic simulation definitely reveal and support the mechanism of β-CD promoting the CaCO3 mineralization. Keywords: Mineralization, Anti-corrosive coating, Molecular dynamic simulation, Marine environment, Self-healing
url	http://www.sciencedirect.com/science/article/pii/S0264127519302941
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Self-healing mineralization and enhanced anti-corrosive performance of polyurethane CaCO3 composite film via β-CD induction

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