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ÖпÆÔºÀ¼ÖÝ»¯Ñ§ÎïÀíÑо¿Ëù¹ÌÌåÈ󻬹ú¼ÒÖØµãʵÑéÊÒÑо¿ÈËÔ±ÔÚʯīϩ»ù¶à²ã±¡Ä¤µÄ¹¹Öþ¼°ÆäĦ²ÁѧÐÔÄÜÑо¿·½ÃæÈ¡µÃнøÕ¹¡£ÔÚÓÉÑõ»¯Ê¯Ä«Ï©£¨GO£©Íâ²ãºÍ3-°±»ù±û»ùÈýÒÒÑõ»ù¹èÍ飨APTES£©×Ô×é×°µ×²ãÐÞÊεĹè»ùƬÉÏ£¬Ñо¿ÈËÔ±½øÒ»²½½ÓÖ¦ÁËÊ®°ËÍé»ùÈýÂȹèÍ飨OTS£©·Ö×Ó£¬³É¹¦µØ¹¹ÖþÁËÊèË®µÄAPTES-GO-OTSÈý²ãĤ¡£¶ÔÆä΢½á¹¹ºÍĦ²ÁѧÐÔÄÜÑо¿±íÃ÷£¬¸ÃÈý²ãĤ³ÊÏÖµÍÕ³×ÅÐÔ£¬ÇÒÆä΢¹ÛĦ²ÁѧÐÔÄܺͺê¹ÛĦ²ÁѧÐÔÄܾùÏÔÖøÌá¸ß¡£ ABSTRACT: Taking advantage of the condensation between SiOH of the hydroxylated octadecyltrichlorosilane (OTS) and COH on graphene oxide (GO) surface, we grafted OTS onto the GO-based dual-layer film, which was composed of GO outerlayer and (3-aminopropyl)triethoxysilane (APTES) selfassembled underlayer, on a Si substrate. Thus, a hydrophobic trilayer film coded as APTES-GO-OTS was prepared successfully. To confirm the chemical composition, structure, and morphology of the trilayer film, various means including water contact angle measurement, attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectrometry, X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM) were performed. Moreover, to investigate the tribological performances, the micro- and macrotribological experiments were conducted with AFM and a UMT tribometer. The results showed that the as-prepared trilayer film exhibited low adhesion and greatly reduced the friction force in both the micro- and macroscale. Therefore, such a trilayer film is suitable for an application in the lubrication and protection of nano/microelectromechanical systems (NEMS/MEMS). |
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