Relationship between triboelectric charging and surface modifications of human hair

Static charge generation on intact and modified human hair fibers has been studied in the rubbing mode using a variety of metal (stainless teel, aluminum, gold) and polymer (nylon, Teflon, chitosan, polycarbonate, polystyrene) contact probes. Adsorption of long chain alkyl quaternary ammonium salts, cationic polymers, and polymer-detergent complexes was found to decrease the electrochemical potential and increase the conductivity of the fiber surface. On the other hand, modification of the fibers by reduction, bleaching, and oxidative dyeing has only a small effect on triboelectric harging. Measurements of the kinetics of charge decay indicate that none of these treatments leads to increased surface conductivity of the keratin fibers.

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