Abstract

4-Aminobutyltriethoxysilane functionalized TiO₂ nanoparticles (TiO₂-ABTES) dispersed diglycidyl ethers of bisphenol-A (DGEBA-GY260) were studied for antimicrobial applications. Epoxy nano-hybrid coatings of four different concentrations (1, 3, 5 and 7 wt %) were developed using TiO₂-ABTES as the dispersed phase and a commercially available DGEBA as the matrix phase. Triethylenetetramine (TETA) used to cure the nanocomposites films. The structural characteristics of these materials were investigated by Fourier transform infrared spectral studies, Scanning electron microscopy and atomic force microscope analysis. The surface characteristics of the samples were estimated from contact angle measurements and calculated surface free energy and adhesion energy. The bacteriological tests were done using the agar diffusion method with different concentrations of TiO₂-ABTES. The antimicrobial activity test noted that the antimicrobial activity of 7 wt% TiO₂-ABTES nanoparticles loaded epoxy nanocomposite film has a better inhibition zone against all pathogens under study.

摘要

研究了 4-氨基丁基三乙氧基硅烷官能化的 TiO ₂纳米粒子 (TiO ₂ -ABTES) 分散的双酚 A 二缩水甘油醚 (DGEBA-GY260) 的抗菌应用。使用 TiO ₂开发了四种不同浓度（1、3、5 和 7 wt%）的环氧纳米混合涂层-ABTES 作为分散相，市售的 DGEBA 作为基质相。三亚乙基四胺 (TETA) 用于固化纳米复合材料薄膜。通过傅里叶变换红外光谱研究、扫描电子显微镜和原子力显微镜分析研究了这些材料的结构特性。从接触角测量和计算的表面自由能和粘附能估计样品的表面特性。使用不同浓度的TiO ₂ -ABTES的琼脂扩散法进行细菌学测试。抗菌活性测试表明，7 wt% TiO ₂ -ABTES 纳米颗粒负载的环氧纳米复合膜的抗菌活性对所有研究中的病原体具有更好的抑菌圈。