基于丁香酸改性的阳离子水性聚氨酯制备及其抗菌性能
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安徽大学

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2020年度安徽省重大科技成果工程化研发项目资助


Preparation and Antibacterial Properties of Cationic Waterborne Polyurethanes modified by syringic Acid
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Anhui University

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Funded by the engineering R & D project of major scientific and technological achievements in Anhui Province in 2020

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    摘要:

    天然植物来源的酚类化合物对耐药细菌具有良好的抗菌效果,丁香酸(SGA)是天然酚酸的一种典型代表。本文以异佛尔酮二异氰酸酯(IPDI),聚四氢呋喃醚二醇(PTMG)和1,4-丁二醇(BDO)为原料,采用含叔胺基团的扩链剂3-二甲氨基-1,2-丙二醇(DMAD)与SGA进行季铵化反应制备了水性聚氨酯薄膜(SWPU),通过FTIR、1H-NMR对SWPU薄膜进行了表征,并对SWPU薄膜的纳米粒径、DSC、力学性能、水接触角、抗菌性能等进行分析。结果表明,n(DMAD):n(BDO)=5:1制备的SWPU-3薄膜玻璃化转变温度为-29.02℃,水接触角为79.1°,拉伸强度为35.6MPa,断裂伸长率为987.7%,对大肠杆菌和金黄色葡萄球菌均表现出99.1%以上的抗菌活性。抑菌区实验表明,薄膜的抗菌机理是基于接触杀灭,而不是抗菌成分的释放,样品薄膜具有环境友好的特性。

    Abstract:

    Phenolic compounds from natural plants have good antibacterial effect on drug-resistant bacteria. Syringic acid (SGA) is a typical representative of natural phenolic acids. In this paper, waterborne polyurethane films (SWPU) were prepared by quaternization reaction of isophorone diisocyanate (IPDI), polytetrahydrofuran glycol (PTMG) and 1mai 4-butanediol (BDO) with chain extender 3-dimethylamino-1-mino-2-propanediol (DMAD) and SGA. SWPU films were characterized by FTIR and 1H-NMR. The nano-size, DSC, mechanical properties, water contact angle and antibacterial properties of SWPU films were analyzed. The results showed that the glass transition temperature of SWPU-3 film prepared at n (DMAD): n (BDO) = 5:1 was -29.02 ℃, the water contact angle was 79.1 °, the tensile strength was 35.6MPa, the elongation at break was 987.7%, and showed more than 99.1% antibacterial activity against Escherichia coli and Staphylococcus aureus. The antibacterial zone experiments show that the antibacterial mechanism of the film is based on contact killing rather than the release of antibacterial components, and the sample film has environment-friendly characteristics.

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王延蕾,杨盼盼,杨建军,吴庆云,吴明元,张建安,刘久逸.基于丁香酸改性的阳离子水性聚氨酯制备及其抗菌性能[J].精细化工,2025,42(6):

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  • 收稿日期:2024-07-22
  • 最后修改日期:2024-09-18
  • 录用日期:2024-08-12
  • 在线发布日期: 2025-06-06
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