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    Surface and Friction Behavior of a Silicone Surfactant Adsorbed on Model Textiles Substrates

    Year: 2010

    Journal: Ind. Eng. Chem. Res., 2010, 49 (18), pp 8550–8557, 20101201

    Authors: Liu X. †, Song J. †‡, Wu D.§, Genzer J., Theyson T., Rojas O.J. *†#

    Last authors: Orlando J. Rojas

    Organizations: Department of Forest Biomaterials, North Carolina State University, Raleigh, North Carolina 27695-8005, Jiangsu Provincial Key Laboratory of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing, Jiangsu Province 210037, People's Republic of China, Department of Chemistry, Duke University, Durham, North Carolina 27708, Department of Chemical & Bimolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, TensTech Inc., 424 Shrewsbury Lane, Matthews, North Carolina 2815, and Department of Forest Products Technology, Faculty of Chemistry and Materials Sciences, Aalto University, P.O. Box 16300, FI-00076 Aalto, Espoo, Finland

    Country: Finland

    This study reports on interactions of an amphiphilic block copolymer of polyalkylene oxide-modified poly(dimethylsiloxane) with thin films of polypropylene (PP), polyethylene terephthalate (PET), and nylon, as well as with reference hydrophilic silica surfaces. The dynamics of adsorption, adsorbed mass, and viscoelasticity of the adsorbed layer are quantified by using a quartz crystal microbalance, while boundary layer lubrication behaviors are studied by using lateral force microscopy. Driven by hydrophobic interactions, the silicone surfactant adsorbs following a Langmuir isotherm and forms strongly adsorbed layers on the polymer surfaces with an areal mass directly related to the hydrophobicity of the substrate. The self-assembled silicone surfactant molecules improve significantly wettability and lower friction. The results reported herein will broaden our understanding of lubrication phenomena in textile and fiber processing applications.