Seawater-Degradable and Antibacterial Epoxy Thermosets Employing Betaine Ester Linkages
Seawater-Degradable and Antibacterial Epoxy Thermosets Employing Betaine Ester Linkages
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DOI：
10.1021/acsapm.2c02239
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发表时间：
2023-04
影响因子：
5
通讯作者：
Jin Han;Quan Chen;Yiping Feng;Yupeng Shen;Dan Wu;Mingqiang Zhong;Qiaoye Zhang;Zhengping Zhao-Zhengping
中科院分区：
文献类型：
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作者：
Jin Han;Quan Chen;Yiping Feng;Yupeng Shen;Dan Wu;Mingqiang Zhong;Qiaoye Zhang;Zhengping Zhao-Zhengping
降解不良和微生物污染是热固性树脂在海洋环境中应用所面临的两大挑战。本文介绍了甜菜碱酯功能化环氧树脂在类海水环境中降解和抗菌活性可调的合成方法。氯乙酸酯装饰环氧树脂首先采用开环反应合成，随后与叔胺基固化剂反应。所得的甜菜碱酯装饰环氧热固性树脂屈服强度超过80mpa，降解能力可调。在温和的碱性条件下实现了快速降解，近似于弱碱性海水条件。十六烷基氯乙酸酯的掺入进一步提高了甜菜碱酯的含量和杀菌性能。对MF10-CCA1-PMD金黄色葡萄球菌的抑菌率为99.34%，优于现有的抗菌药物。研究结果为实现功能化环氧树脂提供了一条有效途径，可以促进热固性材料的发展，增强海洋环境的功能，降低环境成本。
Poor degradation and microbial contamination are two major challenges associated with the application of thermoset resins in marine settings. Here, the synthesis of betaine ester-functionalized epoxy resins with tunable degradation and antibacterial activity in seawater-like environments is presented. Chloroacetate-decorated epoxy resins were first synthesized using a ring-opening reaction and subsequently reacted with tertiary amine-based curing agents. The resulting betaine ester-decorated epoxy thermosets featured a yield strength exceeding 80 MPa and tunable degradation capability. Rapid degradation was realized under mild alkali conditions, corresponding approximately to weakly alkaline seawater conditions. Integration of cetyl chloroacetate further increased the betaine ester content and bactericidal performance. A bactericide rate of 99.34% againstStaphylococcus aureusof MF10-CCA1-PMD was achieved, which compares favorably to that of established antibacterial agents. The results demonstrate an effective route for realizing functionalized epoxy resins that could advance the development of thermosetting materials with enhanced functionality and reduced environmental cost for marine environments.