In the present study, the surface of titanium dioxide (TiO2) nanoparticles was modified with superabsorbent gel based on acrylic acid (AA) and 2-acrylamido-2-methyl propane sulfonic acid (AMPS) via in-situ polymerization using 3-(triethoxysilyl) propyl methacrylate (MPS) as a silane coupling agent. The synthesized TiO2 nanogel composite was then incorporated into a commercial epoxy resin in different weight percent (1, 2, and 4) to prepare an effective self-healing epoxy coating. The chemical structure and surface morphology of the prepared nanogel composite were evaluated by Fourier transform infrared (FTIR), X-ray diffraction (XRD), and Field Emission Scanning Electron Microscopy (FESEM). Furthermore, to calculate the weight ratio of the inorganic to organic materials, the ash content test was employed. The effectiveness of the TiO2 nanogel composite as the self-healing material in the epoxy resin was assessed in 3.5 wt.% NaCl solution by potentiodynamic polarization tests and electrochemical impedance spectroscopy (EIS).

中文翻译：

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TiO2/丙烯酸-co-2-丙烯酰胺-2-甲基丙磺酸纳米凝胶复合材料的合成与表征及其在环氧涂料中的自修复性能

在本研究中，二氧化钛 (TiO2) 纳米粒子的表面用基于丙烯酸 (AA) 和 2-丙烯酰胺基-2-甲基丙磺酸 (AMPS) 的超吸水凝胶通过原位聚合使用 3-(三乙氧基甲硅烷基) 甲基丙烯酸丙酯 (MPS) 作为硅烷偶联剂。然后将合成的 TiO2 纳米凝胶复合材料以不同的重量百分比（1、2 和 4）掺入商业环氧树脂中，以制备有效的自修复环氧树脂涂层。通过傅里叶变换红外光谱（FTIR）、X射线衍射（XRD）和场发射扫描电子显微镜（FESEM）对制备的纳米凝胶复合材料的化学结构和表面形貌进行评估。此外，为了计算无机材料与有机材料的重量比，采用了灰分测试。