Alkaline Lignin-Functionalized Water-Resistant Waterborne Polyurethane Polymer for Constructing Ultraviolet-Shielding and Mechanically Robust Antibacterial Composites

IF 4.7 2区化学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Polymer Materials Pub Date : 2024-11-04 DOI:10.1021/acsapm.4c0233610.1021/acsapm.4c02336

Wei Ma*, Yutong Yang, Jinbao Niu, Wei Wang, Jiru Jia, Jing Qu and Xin Lu*,

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引用次数: 0

Abstract

Herein, highly transparent alkaline lignin (AL)-decorated, environmentally friendly, water-resistant waterborne polyurethane (WPU) antibacterial composite films (WPU/AL-MC) were constructed by incorporation of 1-chloro-2,2,5,5-tetramethyl-4-imidazolinone (MC) N-halamine biocide via a facile solution-casting technique. Interestingly, as-synthesized WPU/AL-MC films showed reinforced mechanical properties (20.80 MPa) and high-efficiency ultraviolet (UV)-shielding performance (over 85% of the UVA spectrum) compared to pristine WPU. The antibacterial rates of WPU/AL-MC films (0.8 wt % MC) against the inoculated model strains, Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli), could reach 100% after 5 min of contact. Additionally, an obvious inhibition zone further potentially confirmed the release-killing mechanism of MC, which gave evidence that the WPU/AL-MC films illustrated rapid and persistent biocidal activity owing to the combination of contact-killing and release-killing processes. Meanwhile, the WPU/AL-MC films exhibited an adequate swelling ratio, well-maintained thermal stability, and prominent storage stability. At a very low filler loading of MC, the proposed antibacterial films also exhibited remarkable preservation capacity and could be used for fresh-keeping fields. Overall, this insight has a guiding function toward the simple approach for fabricating and structurally designing high-performance advanced WPU composite films in packaging utilization.

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碱性木质素官能化耐水水性聚氨酯聚合物用于构建紫外线屏蔽和机械坚固抗菌复合材料

本文通过一种简便的溶液浇铸技术，加入 1-氯-2,2,5,5-四甲基-4-咪唑啉酮（MC）N-卤胺杀菌剂，构建了高透明、环保、防水的碱性木质素（AL）装饰水性聚氨酯（WPU）抗菌复合薄膜（WPU/AL-MC）。有趣的是，与原始 WPU 相比，合成的 WPU/AL-MC 薄膜显示出更强的机械性能（20.80 兆帕）和高效的紫外线（UV）屏蔽性能（超过 85% 的 UVA 光谱）。接触 5 分钟后，WPU/AL-MC 薄膜（0.8 wt % MC）对接种模式菌株金黄色葡萄球菌（S. aureus）和大肠杆菌（E. coli）的抗菌率可达 100%。此外，明显的抑菌区进一步证实了 MC 的释放杀菌机制，证明了 WPU/AL-MC 薄膜在接触杀菌和释放杀菌过程的共同作用下，具有快速而持久的杀菌活性。同时，WPU/AL-MC 薄膜具有足够的膨胀率、良好的热稳定性和突出的储存稳定性。在 MC 填料含量很低的情况下，所提出的抗菌薄膜也表现出了显著的保鲜能力，可用于保鲜领域。总之，这一见解对高性能先进 WPU 复合薄膜在包装应用中的简单制备和结构设计具有指导作用。

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

ACS Applied Polymer Materials Multiple-

CiteScore

7.20

自引率

6.00%

发文量

810

期刊介绍： ACS Applied Polymer Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics, and biology relevant to applications of polymers. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates fundamental knowledge in the areas of materials, engineering, physics, bioscience, polymer science and chemistry into important polymer applications. The journal is specifically interested in work that addresses relationships among structure, processing, morphology, chemistry, properties, and function as well as work that provide insights into mechanisms critical to the performance of the polymer for applications.