Enhancement of the Excellent Properties of an Intrinsically Antimicrobial Poly(Oxime-Urethane) Coating with a Bio-Based Furan Chain Extender.

IF 4.3 3区化学 Q2 POLYMER SCIENCE

Macromolecular Rapid Communications Pub Date : 2025-09-24 DOI:10.1002/marc.202500535

Guan Yang, Guangming Lu, Zhichun Liu, Shu Tian, Zhongsen Ma, Yajie Zhang

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引用次数: 0

Abstract

Polyurethane coatings that exhibit excellent mechanical, weathering, and antimicrobial properties are highly valuable for developing new marine antifouling coatings. In this study, poly(oxime-urethane) were synthesized using the bio-based furan chain extender, 2,5-diformylfuran dioxime (DFFD), and a top coating (DPUC_x) was then prepared with titanium dioxide (TiO₂) fillers and additives. After application to the surface of the epoxy primer, DPUC_x exhibited excellent mechanical properties, including crosshatch adhesion of 5B, pull-off adhesion of 3.85 MPa, flexibility of 2 mm, pencil hardness of H, and impact strength of 120 cm·kg. Following 20 consecutive days of salt spray corrosion and xenon lamp accelerated ageing testing, samples with a high DFFD content exhibited no discernible changes in appearance, with a color difference value (ΔE^*) of just 0.53, demonstrating superior weathering performance. Furthermore, DPUC_x exhibits outstanding intrinsic antimicrobial activity, achieving a 100% inhibition rate against both Escherichia coli (G^-) and Staphylococcus aureus (G⁺). This study provides a feasible design strategy for developing high-performance, sustainable antibacterial protective coatings.

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生物基呋喃扩链剂增强固有抗菌聚肟-氨基甲酸乙酯涂层的优良性能。

聚氨酯涂料具有优异的机械性能、耐候性能和抗菌性能，在开发新型船舶防污涂料方面具有重要的应用价值。本研究以生物基呋喃扩链剂2,5-二甲酰呋喃二肟（DFFD）为原料合成了聚肟-氨基甲酸乙酯（聚肟-氨基甲酸乙酯），并以二氧化钛（TiO2）为填料和助剂制备了顶涂层（ducx）。ducx涂在环氧底漆表面后，表现出优异的力学性能，十字附着力5B，拉脱附着力3.85 MPa，柔韧性2 mm，铅笔硬度H，冲击强度120 cm·kg。经过连续20天的盐雾腐蚀和氙灯加速老化测试，DFFD含量高的样品外观无明显变化，色差值（ΔE*）仅为0.53，表现出优异的耐候性能。此外，ducx表现出出色的内在抗菌活性，对大肠杆菌（G-）和金黄色葡萄球菌（G+）的抑制率均达到100%。本研究为开发高性能、可持续的抗菌防护涂料提供了可行的设计策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Macromolecular Rapid Communications 工程技术-高分子科学

CiteScore

7.70

自引率

6.50%

发文量

477

审稿时长

1.4 months

期刊介绍： Macromolecular Rapid Communications publishes original research in polymer science, ranging from chemistry and physics of polymers to polymers in materials science and life sciences.