Myricetin-enabled cashew shell oil-based waterborne polyurethane with high bio-content, UV resistance, toughness, and corrosion protection

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings Pub Date : 2025-08-14 DOI:10.1016/j.porgcoat.2025.109596

Jianing Xu , Jiawei Li , Jiaqi Zhang , Min Huang , Ze Sun , Zhichao Che , Chao Zhou

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Abstract

As petroleum resources become increasingly depleted and global environmental awareness continues to rise, green sustainable biomass materials have garnered significant attention. Myricetin (MRT), is recognized as a renewable flavonoid-based polyol with significant potential, contains abundant phenolic hydroxyl groups, rigid benzene rings, and ketone groups in its molecular structure, making it suitable for constructing multifunctional waterborne polyurethane (WPU). In this work, following the molecular structure design approach, MRT was incorporated into cashew shell oil-derived WPU as a bio-based crosslinking agent, and a series of biobased waterborne polyurethane (MSWPU) with high biobased content (91.6 %), UV resistance, corrosion resistance and remarkable toughness were prepared. A systematic investigation was conducted on the effects of MRT content on the chemical structures and properties of MSWPU dispersions and films. The findings observed that the inclusion of MRT brought about a substantial improvement in the mechanical performance of MSWPU films. Specifically, it achieved a maximum tensile strength of 33.52 MPa and a maximum toughness of 72.8 MJ/m³, surpassing most plant-based WPU systems reported to date. Interestingly, MSWPU films exhibited remarkable UV-blocking capabilities, providing effective protection against UV radiation across the entire wavelength spectrum (200–400 nm). Thanks to the denser cross-linked network within the MSWPU, stronger intermolecular hydrogen bonding forces and enhanced film strength, the MSWPU coating exhibited remarkable anti-corrosion efficiency of 98.34 %. This study provided straightforward and effective guidance for the development of high-performance, multifunctional bio-based coatings, demonstrating its potential in practical application areas such as outdoor furniture, automotive transparent coatings, and packaging films.

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杨梅素使腰果壳油基水性聚氨酯具有高生物含量，抗紫外线，韧性和防腐

随着石油资源的日益枯竭和全球环保意识的不断提高，绿色可持续的生物质材料引起了人们的极大关注。杨梅素（Myricetin， MRT）分子结构中含有丰富的酚羟基、刚性苯环和酮基，是一种具有广泛应用潜力的可再生类黄酮类多元醇，适合用于制备多功能水性聚氨酯（WPU）。本研究采用分子结构设计方法，将MRT作为生物基交联剂掺入腰果壳油基水性聚氨酯中，制备了一系列具有高生物基含量（91.6%）、耐紫外线、耐腐蚀、韧性优异的生物基水性聚氨酯（MSWPU）。系统地研究了MRT含量对MSWPU分散体和膜的化学结构和性能的影响。研究发现，MRT的加入使MSWPU薄膜的机械性能有了实质性的改善。具体来说，它的最大抗拉强度为33.52 MPa，最大韧性为72.8 MJ/m3，超过了迄今为止报道的大多数基于植物的WPU系统。有趣的是，MSWPU薄膜表现出显著的紫外线阻挡能力，在整个波长光谱（200-400 nm）内提供有效的紫外线防护。由于MSWPU内部交联网络更致密，分子间氢键力更强，膜强度增强，MSWPU涂层的防腐效率达到98.34%。该研究为高性能、多功能生物基涂料的开发提供了简单有效的指导，展示了其在户外家具、汽车透明涂料和包装薄膜等实际应用领域的潜力。

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来源期刊

Progress in Organic Coatings 工程技术-材料科学：膜

CiteScore

11.40

自引率

15.20%

发文量

577

审稿时长

48 days

期刊介绍： The aim of this international journal is to analyse and publicise the progress and current state of knowledge in the field of organic coatings and related materials. The Editors and the Editorial Board members will solicit both review and research papers from academic and industrial scientists who are actively engaged in research and development or, in the case of review papers, have extensive experience in the subject to be reviewed. Unsolicited manuscripts will be accepted if they meet the journal''s requirements. The journal publishes papers dealing with such subjects as: • Chemical, physical and technological properties of organic coatings and related materials • Problems and methods of preparation, manufacture and application of these materials • Performance, testing and analysis.