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中文摘要：
提出了一种新的碳纤维表面改性方法——分子自组装,即在表面金属化的碳纤维上进行有机分子的自组装。表面增强拉曼散射光谱（SERS）分析证实了末端官能团不同的芳基硫醇化学吸附在银的表面,并形成了平躺取向和倾斜取向的自组装膜结构。X-射线光电子能谱（XPS）测试进一步证实了两种自组装膜通过S原子和Ag形成共价键吸附在碳纤维表面。表面经组装改性后的碳纤维和环氧复合后界面粘结强度得到了不同程度的提高,揭示了界面区域膜结构和性能的关系。
英文摘要：
A new method based on the molecular self-assembly was proposed for the carbon fiber surface modification. The carbon fiber surface was first metallized by electroless Ag plating and then covered by organic compound self-assembly films. The surface-enhanced Raman scattering spectroscopy （SERS） analysis verified that two aromatic thiols with different end-groups chemisorbed onto the Agplated carbon fibers and formed a lie-down phase and tilt- angle phase corresponding to the substrate surface. XPS further proved the chemisorption of self-assembly films on carbon fiber surface via the formation of S-Ag bond. The interfacial bonding strengths of modified carbon fiber/epoxy composites were improved. The relationship between the structures of interfacial regions and properties of the micro-composites was revealed.
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