AVS 52nd International Symposium
    Nanometer-Scale Science and Technology Tuesday Sessions
       Session NS-TuP

Paper NS-TuP39
Nanotribological Effects of Silicone Type and Deposition Level and Surfactant Type on Human Hair using Atomic Force Microscopy

Tuesday, November 1, 2005, 4:00 pm, Room Exhibit Hall C&D

Session: Nanometer Scale Science and Technology Poster Session
Presenter: C.A. LaTorre, The Ohio State University
Authors: C.A. LaTorre, The Ohio State University
B. Bhushan, The Ohio State University
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The atomic/friction force microscope (AFM/FFM) has recently become an important tool for studying the micro/nanoscale structure and tribological properties of human hair. Of particular interest to hair and beauty care science is how common hair care materials, such as conditioner, deposit onto and change hair tribological properties, since these properties are closely tied to product performance. Since conditioner is a complex network of many different ingredients (including silicones for lubrication and cationic surfactants for static control and gel network formulation), studying the effects of these individual components can give insight into the significance each has on hair properties. In this study, AFM/FFM is used to conduct nanotribological studies of surface roughness, friction force, and adhesive force as a function of silicone type, silicone deposition level, and cationic surfactant type. Changes in coefficient of friction as a result of soaking hair in de-ionized water are also discussed.