AVS 52nd International Symposium
    MEMS and NEMS Monday Sessions
       Session MN-MoP

Paper MN-MoP1
AFM Studies of Conditioner Thickness Distribution and Binding Interactions on Hair Surface

Monday, October 31, 2005, 5:00 pm, Room Exhibit Hall C&D

Session: General Aspects of MEMS and NEMS Poster Session
Presenter: B. Bhushan, The Ohio State University
Authors: B. Bhushan, The Ohio State University
N. Chen, The Ohio State University
Correspondent: Click to Email
How common hair care products, such as conditioner, deposit onto and change hair properties are of interest in beauty care science, since these properties are closely tied to product performance. The binding interaction between conditioner and hair surface is one of the important factors in determining the conditioner thickness distribution, and consequently the proper functions of conditioner. In this study, AFM is used to obtain the local conditioner thickness distribution, adhesive forces and effective Youngâ?Ts modulus mapping of various hair surfaces. The conditioner thickness is extracted by measuring the forces on the AFM tip as it approaches, contacts, and pushes through the conditioner layer. The effective Young's moduli of various hair surfaces are calculated from the force distance curves using Hertz analysis. The binding interactions of different silicones on the hair surface, as well as their effect on the effective Young's modulus of the hair are also discussed.