An antimicrobial acrylic polyurethane coating with TiO2-Ag hybrid nanoparticles

IF 2 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Pure and Applied Chemistry Pub Date : 2024-06-01 DOI:10.1515/pac-2024-0019

Thien Vuong Nguyen, Truc Vy Do, Thu Ha Hoang, Tuan Anh Nguyen, Le Trong Lu, Thi Mat Le, Thanh Minh Pham, Raa Khimi Shuib, Dai Lam Tran

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Abstract

The purpose of this work is to fabricate the advanced organic antibacterial coating containing the strong photocatalytic nanomaterials. For this purpose, firstly the TiO2–Ag hybrid nanoparticles are synthesized by chemical reduction method. Then, the antibacterial coating based on acrylic polyol, polyisocyanate, and these TiO2–Ag hybrid nanoparticles has been prepared. Mechanical properties show that the optimal content of TiO2–Ag hybrid nanoparticles in the coating matrix is 2 wt%, with its abrasion resistance of 166.2 L/mil; impact strength of 195 kg cm; adhesion of size #1 and relative hardness of 0.78. In addition, FE-SEM analysis shows that the nanocomposite coating has a tight structure with homogeneous dispersion of TiO2–Ag nanoparticles in the polymer matrix. The paint film has good antibacterial activity and has great application prospects. Data from the antibacterial test indicates that in the presence of an acrylic polyurethane coating containing 2 wt% TiO2–Ag, the number of viable Escherichia coli decreased from 3.4 × 105 CFU/ml to 1.5 × 102 CFU/ml after 24 h of culture.

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含有 TiO2-Ag 混合纳米粒子的丙烯酸聚氨酯抗菌涂层

本研究的目的是制备含有强光催化纳米材料的先进有机抗菌涂层。为此，首先采用化学还原法合成了 TiO2-Ag 混合纳米粒子。然后，以丙烯酸多元醇、多异氰酸酯和这些 TiO2-Ag 杂化纳米粒子为基础制备了抗菌涂层。力学性能表明，涂层基体中 TiO2-Ag 混合纳米粒子的最佳含量为 2 wt%，其耐磨性为 166.2 L/mil；冲击强度为 195 kg cm；附着力为 #1；相对硬度为 0.78。此外，FE-SEM 分析表明，纳米复合涂层结构紧密，TiO2-Ag 纳米粒子均匀地分散在聚合物基体中。该漆膜具有良好的抗菌活性，应用前景广阔。抗菌测试数据表明，在含有 2 wt% TiO2-Ag 的丙烯酸聚氨酯涂层中，培养 24 小时后，大肠杆菌的存活数量从 3.4 × 105 CFU/ml 降至 1.5 × 102 CFU/ml。

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来源期刊

Pure and Applied Chemistry 化学-化学综合

CiteScore

4.00

自引率

0.00%

发文量

审稿时长

3-8 weeks

期刊介绍： Pure and Applied Chemistry is the official monthly Journal of IUPAC, with responsibility for publishing works arising from those international scientific events and projects that are sponsored and undertaken by the Union. The policy is to publish highly topical and credible works at the forefront of all aspects of pure and applied chemistry, and the attendant goal is to promote widespread acceptance of the Journal as an authoritative and indispensable holding in academic and institutional libraries.