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Investigation of structural changes of ortho- and para-cortical cells in bleached human hair by Differential Scanning Calorimetry
D Zhang, F J Wortmann, G Wortmann, E Schulze zur Wiesche
In: 6th Int Conf Appl Hair Sci; 18 Sep 2014-19 Sep 2014; Princeton, NY, USA. TRI Princeton; 2014.
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Abstract
Investigation of structural changes of Ortho- and Para- Cortical cells in bleached human hair by Differential Scanning CalorimetryD. Zhang 1, F. J. Wortmann 1, G. Wortmann 1, E. Schulze zur Wiesche 2 1 School of Materials, University of Manchester, Manchester, UK1 TRI Princeton, NJ, USA2 Henkel AG &Co KGaA, Hamburg, GERAbstract: Using three Gaussian distributions, the deconvoluted DSC results for two bleached hair samples confirm that a stronger bleach causes a homogenous structural damage on both para- and ortho-cortex with prolonged bleaching time. The predominant structural damage for various heating rates is verified to only occur in the IF. α-helices in three cortical components are homogenously damaged on chemically damaged fibres. However, heating rates yield a homogenous effect on disulfide linkages of para- and ortho- cortex, regardless of any previous oxidation treatment. Key Words: Deconvolution, para-cortex, ortho-cortex, heating rates, bleaching