物理化学学报 >> 2012, Vol. 28 >> Issue (02): 427-432.doi: 10.3866/PKU.WHXB201111213

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不同链长二元混合自组装薄膜的制备及其微观摩擦性能研究

刘蕾1, 宋仕永1,2, 张平余2   

  1. 1. 河南大学药学院, 药物研究所, 河南开封 475004;
    2. 河南大学, 特种功能材料教育部重点实验室, 河南开封 475004
  • 收稿日期:2011-08-29 修回日期:2011-11-01 发布日期:2012-01-11
  • 通讯作者: 宋仕永 E-mail:sysong0827@gmail.com
  • 基金资助:

    国家自然科学基金(51005057)资助项目

Preparation and Micro-Tribological Study on Dually Mixed Self-Assembled Monolayers

LIU Lei1, SONG Shi-Yong1,2, ZHANG Ping-Yu2   

  1. 1. Institute of Pharmaceutics, Pharmaceutical College, Henan University, Kaifeng 475004, Henan Province, P. R. China;
    2. Key Laboratory for Special Functional Materials, Ministry of Education, Kaifeng 475004, Henan Province, P. R. China
  • Received:2011-08-29 Revised:2011-11-01 Published:2012-01-11
  • Contact: SONG Shi-Yong E-mail:sysong0827@gmail.com
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (51005057).

摘要: 采用分步组装的方法, 将正己酰氯、正癸酰氯、正十四碳酰氯和硬脂酰氯按不同比例混合, 接枝到3-(三甲氧基硅烷基)丙基乙烯基二胺(DA)氨基自组装膜表面, 制备出一系列不同链长二元混合自组装薄膜; 通过调节溶液中二元组分的相对比例, 得到一系列不同厚度和不同表面润湿性的纳米有机薄膜; 对薄膜进行了接触角测量、椭圆偏光测厚以及原子力形貌分析, 并用摩擦力显微镜考察了其摩擦学性能. 没有发现相分离现象, 而且研究发现, 随着长碳链分子所占比例的增大, 薄膜的致密度增加, 表面疏水性能增强, 微观摩擦系数也随之减小.

关键词: 自组装薄膜, 微观摩擦力, 混合薄膜, 接触角, 椭圆偏光厚度, 原子力显微镜

Abstract: A series of dually mixed self-assembled monolayers were prepared by a simple step-by-step method. Four carbonyl chlorides with different chain lengths were selected and assembled onto a N-[3- (trimethoxylsilyl)propyl] ethylene diamine self-assembled monolayer. Different mixed films were obtained by controlling the ratio of co-deposited carbonyl chlorides. The structures of the films were characterized by measuring their contact angles, ellipsometric thickness, and atomic force microscopy. No phase separation was observed in the mixed films. Micro-tribological studies were also carried out on the films. It was found that frictional coefficients decreased as the ratio of the longer component was increased.

Key words: Self-assembled monolayer, Micro-tribology, Mixed film, Contact angle, Ellipsometirc thickness, Atomic force microscopy

MSC2000: 

  • O647