[Application of FTIR micro-spectroscopy in the tribology].
The wave number of characteristic absorption peak nu asC-O-C of the polyester formed on the frictional process were determined by Fourier Transform Infrared (FTIR) Micro-spectroscopy, and the wave number displacement of characteristic absorption peak nu asC-O-C was analyzed based on the conversion mass of polyester formed. The internal relations between anti-wear order rule of hydroxyl fatty acids and vibration absorption peak nu asC-O-C of polyester formed by hydroxyl fatty acids was deduced according to these results, and the anti-wear order of hydroxyl fatty acids was reasonably explained, that is 13, 14-di-hydroxydocosanoic acid > 13 (14)-monohydroxydocosanoic acid = 9,10-dihydroxyoctadecanoic acid > 9,10,12-trihydroxyoctadecanoic acid > 9(10)-monohydroxyoctadecanoic acid. A net polyester film is formed by 13, 14-dihydroxydocosanoic acid and a linear polyester film is formed by 9, (10)-monohydroxyoctadecanoic acid and 13(14)-monohydroxydocosanoic acid.
Hu
Zhi-meng
ZM
State Key Laboratory of Tribology, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China.
D000042:Absorption; D005227:Fatty Acids / Q000737:chemistry*; D017276:Friction; D017665:Hydroxyl Radical / Q000737:chemistry; D011091:Polyesters / Q000032:analysis*; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods
D005227:Fatty Acids; D011091:Polyesters; C035513:13-hydroxydocosanoic acid; D017665:Hydroxyl Radical