Abstract: Variation of the surface adhesion force during the formation of octadecyl trichlororilane
(OTS) .self-assembled monolayer on a glass substrate surface was investigated hy atomic
force microscope (AFM). The research shows that the hydrophobicity and the adbeslon force
of the sample surface increases gradualy while the substrate surface is covered by OTS
molecules as the reaction proceeds. After 15 min reaction, a cloee-pac.ked and smooth OTS
self-assembled monolayer could from on the glass subetrate surface with an advancing
contact angle of 105° and an interfaeial energy of 55.79 mJ.m^-2.

Key words: surface adhesion force, atomic force microscope, octadecyl trichlorosilane, selfassembled monolayer

摘要： Variation of the surface adhesion force during the formation of octadecyl trichlororilane
(OTS) .self-assembled monolayer on a glass substrate surface was investigated hy atomic
force microscope (AFM). The research shows that the hydrophobicity and the adbeslon force
of the sample surface increases gradualy while the substrate surface is covered by OTS
molecules as the reaction proceeds. After 15 min reaction, a cloee-pac.ked and smooth OTS
self-assembled monolayer could from on the glass subetrate surface with an advancing
contact angle of 105° and an interfaeial energy of 55.79 mJ.m^-2.

关键词: 表面附着力;自组装单分子层;原子力显微镜;十八烷基三氯硅烷;表面化学