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用 X射线光电子能谱 ( XPS)研究了玻璃基体上沉积脂肪酸及二烷基二硫代磷酸 ( DDP)修饰的 Mo S2 纳米微粒LB膜摩擦前后的结构变化 .结果表明 :二十酸 LB膜经一定次数摩擦后其结构发生明显变化 ,摩擦后 C— H链的比例降低 ,而极性基团的比例显著增加 ,这可归因于其在摩擦力作用下发生诸如转移及有序化转变等一系列摩擦化学变化 .表面修饰 Mo S2 纳米微粒 LB膜摩擦前后结构不发生明显变化 ,且经一定次数摩擦后其磨痕上仍可检测到Mo S2 ,说明正是由于无机纳米核的高承载作用而使其表现出比脂肪酸 LB膜更优异的抗磨性能 .
X-ray photoelectron spectroscopy (XPS) was used to study the structural changes before and after rubbing of LB films modified with DDS and MoS2 nanoparticles on glass substrates. After a certain number of rubbing, the structure changes obviously, the proportion of C-H chains decreases after rubbing, and the proportion of polar groups increases remarkably, which can be attributed to the occurrence of frictional forces such as transfer and orderly transformation A series of tribochemical changes.The structure of the surface-modified Mo S2 nanoparticle LB films did not change significantly before and after rubbing, and the Mo S2 could still be detected on the rubbing traces after a certain number of rubs, indicating that it is due to the high bearing capacity of the inorganic nanometer cores Making it show more excellent than the fatty acid LB film anti-wear properties.