Construction of eco-friendly multifunctional cashew nut shell oil-based waterborne polyurethane network with UV resistance, corrosion resistance, mechanical strength, and transparency

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings Pub Date : 2023-11-09 DOI:10.1016/j.porgcoat.2023.108051

Jiawei Li, Chengyu Hong, Mengsong Liu, Yongquan Wang, Yutong Song, Ruixue Zhai, Jiaqi Zhang, Chao Zhou

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引用次数: 0

Abstract

Vegetable oil-based waterborne polyurethane possesses numerous advantages, including its sustainability, environmental friendliness, and economic benefits. Nevertheless, its application is constrained by inferior mechanical properties and a low glass transition temperature. Hereon, the renewable polyols of sorbitan monooleate/cytidine were incorporated into the anionic cashew nut shell oil-based WPU network through molecular structure design. Series of CNSL-based WPU with outstanding UV resistance, mechanical properties, corrosion resistance, and transparency were successfully synthesized. The effects of Ce/SP content on the performance of CNSL-based WPU dispersions and films were investigated. The results demonstrated a remarkable enhancement in the properties of the modified WPU films. Specifically, the tensile strength and T_g were increased from 9.7 MPa to 23.9 MPa and 1.1 °C to 45.8 °C, respectively, while maintaining a toughness of 26 MJ/m⁻³, which attained or even surpassed the current vegetable oil-based WPU systems. It was confirmed excellent UV resistance within the UVB and UVC spectrums. Furthermore, with the increase in Ce/SP content, the water contact angle of films increased slightly, enhancing its water resistance. The IE of WPU-Ce and WPU-SP films reached 97.93 % and 98.42 % respectively, indicating outstanding corrosion resistance. This work presented novel strategies for the advancement of high-performance bio-based WPU, which held promising potential in diverse areas including coatings, corrosion protection, inks, and wearable applications.

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构建具有抗紫外线、耐腐蚀、机械强度高、透明的环保型多功能腰果壳油基水性聚氨酯网络

植物油基水性聚氨酯具有可持续性、环保性和经济效益等诸多优点。然而，它的应用受到较差的机械性能和较低的玻璃化转变温度的限制。为此，通过分子结构设计，将山梨糖单油酸酯/胞苷可再生多元醇纳入阴离子腰果壳油基WPU网络。成功合成了一系列具有优异的耐紫外线、机械性能、耐腐蚀性和透明度的cnsl基WPU。研究了Ce/SP含量对cnsl基WPU分散体和薄膜性能的影响。结果表明，改性后的WPU膜的性能得到了显著提高。其中，抗拉强度从9.7 MPa提高到23.9 MPa, Tg从1.1℃提高到45.8℃，韧性保持在26 MJ/m−3，达到甚至超过了目前植物油基WPU体系。在UVB和UVC光谱范围内具有优异的抗紫外线性能。此外，随着Ce/SP含量的增加，膜的水接触角略有增加，其耐水性增强。WPU-Ce和WPU-SP薄膜的IE分别达到97.93%和98.42%，具有良好的耐蚀性。这项工作为高性能生物基WPU的发展提出了新的策略，在包括涂料、防腐、油墨和可穿戴应用在内的各个领域都有很大的潜力。

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

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.