Quaternary Ammonization Treatment Enhances the Antifouling Activities of the Capsaicin-Based Polybenzoxazine Coatings

作     者：Yang, Hao Liu, Yi Chen, Hao Li, Hua 

作者机构：Zhejing-Japan Joint Laboratory for Antibacterial and Antifouling Technology Zhejiang Engineering Research Center for Biomedical Materials Cixi Institute of Biomedical Engineering Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo315201 China Department of Mechanical Materials and Manufacturing Engineering University of Nottingham Ningbo China Ningbo315100 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China 

出 版 物：《SSRN》 

年 卷 期：2024年

核心收录：

主　　题：Seawater corrosion 

摘      要：Marine biofouling is an important factor that affects the service life of marine equipment. Benzoxazine is a thermosetting resin with flexible molecular design and waterproof properties, which has great potential for the marine antifouling applications. In this work, phenol source capsaicin mimicking N-(4-hydroxy-3-methoxy-benzyl) acrylamide (HMBA), two amine sources 3-aminopropyltriethoxysilane (APTES) and furfurylamine (FFA) together with paraformaldehyde were used for preparing two benzoxazine coatings HMBA-APTES (HA) and HMBA-FFA (HF). By reacting with iodomethane, quaternary ammonium group was introduced into the N-position of oxazine ring. The quaternary ammonified benzoxazine coatings HMBA-APTES-IM (HAI) and HMBA-FFA-IM (HFI) show exciting antibacterial performance as compared to the untreated benzoxazine coating. In particular the HFI coating exhibited 93.8%, 96.4%, 99.9%, and 99.9% killing rates for E Coli, S. aureus, P. aeruginosa, and B. subtilis, respectively. The quaternary ammonization treatment also brought about further enhanced anti-algae activity and excellent real-sea antifouling performances. However, introduction of the ionic groups hindered the thermal polymerization process of benzoxazine, leading to more defects on the coating surface, resulting in poorer corrosion resistance than HA and HF as detected from electrochemical corrosion and neutral salt spray experiments. The corrosion current density of the P(HA) and the P(HF) coatings is two orders more than that of the P(HAI) and the P(HFI) coatings. Our results would shed light on developing new quaternary ammonization treatment routes for polymeric coatings for desired functions. © 2024, The Authors. All rights reserved.