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Open AccessArticle

Preparation of Cross-Linkable Waterborne Polyurethane-Acrylate Coating Films with Multifunctional Properties

by Xin Chen 1,2,†, Xiaomin Ye 3,†, Lulu Lu 4, Yudan Qian 2, Lingnan Wang 5, Yicheng Bi 6, Zefeng Wang 2,7,* and Zaisheng Cai 1,*
1
Key Laboratory of Science and Technology of EcoTextile, Donghua University, Ministry of Education, Shanghai 201620, China
2
Department of Chemistry, Lishui University, Lishui 323000, China
3
Scientific Research Center, Wenzhou Medical University, Wenzhou 325035, China
4
School of Biological Science and Engineering, South China University of Technology, Guangzhou 510640, China
5
Wenzhou Institute, University of Chinese Academy of Sciences (Wenzhou Institute of Biomaterials & Engineering), Wenzhou 325001, China
6
Electromechanical Engineering College, Qingdao University of Science & Technology, Qingdao 260061, China
7
Post-Doctoral Research Station, Dalian Zhenbang Fluorocarbon Paint Stock Co., Ltd., Dalian 116036, China
*
Authors to whom correspondence should be addressed.
These two authors contributed equally to this paper.
Coatings 2020, 10(1), 65; https://doi.org/10.3390/coatings10010065
Received: 15 December 2019 / Revised: 31 December 2019 / Accepted: 3 January 2020 / Published: 11 January 2020
Self-migration or unstable phase inversion occurs when the application conditions are varied, which limits the application of polyurethane-acrylate (PUA) composite films. In this paper, cross-linked polyurethane/poly(methyl methacrylate-co-borneol acrylate) shell microspheres were prepared by using the seeded emulsion polymerization method. The core-shell structure of these samples was identified by dynamic light scattering (DLS) and high-resolution transmission electron microscope (HR-TEM). Moreover, HR-TEM images indicated that the core-shell structure of the microsphere does not undergo complete phase inversion. In addition, with increasing content of borneol acrylate in the shell, the water resistance and antibacterial adhesion of films were improved. The X-ray photoelectron spectroscopy (XPS), Energy Dispersive Spectrometer (EDS), water contact angle (CA) measurements, antibacterial and anti-adhesion tests demonstrate that the C/N ratios of films from the inside to the upper surface had an obvious gradient in growth, indicating the shell component (polyborneol acrylate) was predominantly present at the surface of films after coalescence in cross-linked core-shell PUA. It was found that a suitable degree of cross-linking contributes to the segregation of the hydrophobic component (borneol groups) on the film surface. As a consequence, the excellent water resistance, cytocompatibility, and antibacterial properties endowed this series of polymer materials with promising application potential in the biomedical field. View Full-Text
Keywords: cross-linked; core-shell structure; antibacterial-adhesion coating; water resistance; cytocompatibility cross-linked; core-shell structure; antibacterial-adhesion coating; water resistance; cytocompatibility
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MDPI and ACS Style

Chen, X.; Ye, X.; Lu, L.; Qian, Y.; Wang, L.; Bi, Y.; Wang, Z.; Cai, Z. Preparation of Cross-Linkable Waterborne Polyurethane-Acrylate Coating Films with Multifunctional Properties. Coatings 2020, 10, 65.

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