THE TRIBOLOGICAL CHARACTER OF LB FILMS OF DIPALMITOYLPHOSPHATIDYLCHOLINE (DPPC)

摘要：

The Langmuir-Blodgett LB films of dipalmitoylphosphatidylcholine(DPPC), dipalmitoylphosphatidylcholine-arachidate(DPPC-AA) were prepared on a silicon substrate.Friction of different layers LB films on silicon surfaces was measured with Universal micro-tribometer (UMT) and scanning electron microscope (SEM).The DPPC LB film had lower friction as compared to the unlubricated silicon surfaces and registered much higher antiwear life and load-carrying capacity than the arachidate (AA) LB films.Meanwhile, the friction coefficient of DPPC-AA LB film/steel ball lower than that of DPPC.This would be attributed to the DPPC molecule has one more hydrophilic polar end, so the DPPC monolayer films binding more firmly to the substrate than that of AA.Meanwhile, adding arachidate (AA) to the dipalmitovlphosphatidylcholine(DPPC) could improve the quality of LB film.

关键词： Dipalmitoylphosphatidylcholine (DPPC) Langmuir-Blodgett film Universal Micro-Tribometer(UMT) Wear Ttribological behavior.

作者: BIN YE XIAOFENG ZHANG SHUXI DAI ZULIANG DU PINGYU ZHANG

作者单位: Lab for Matter Characteristic Research at Extreme Condition Southwest University of Science and Tech Department of Intelligent Robotics University of Huaguoshan Kaifeng,HenanProvince,China

会议类型: 国际会议

会议名称: 3rd International Conference on Mechanical and Electrical Technology(ICMET2011) (2011第三届机械与电气技术国际会议)

会议地点: 大连

会议语种:英文

页码: 641-646

在线出版日期: 2011-08-26（万方平台首次上网日期，不代表论文的发表时间）