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Fabrication and properties of keratoses/polyvinyl alcohol blend films

Authors :: Yan Chen
Marina Zoccola
Alessia Patrucco
Claudio Tonin
Alessio Montarsolo
Hossein Rajabinejad
Ada Ferri
Augustin Muresan
Source :: Polymer bulletin (Berl., Internet) 77 (2019): 3033–3046. doi:10.1007/s00289-019-02889-7, info:cnr-pdr/source/autori:Rajabinejad H.; Zoccola M.; Patrucco A.; Montarsolo A.; Chen Y.; Ferri A.; Muresan A.; Tonin C./titolo:Fabrication and properties of keratoses%2Fpolyvinyl alcohol blend flms/doi:10.1007%2Fs00289-019-02889-7/rivista:Polymer bulletin (Berl., Internet)/anno:2019/pagina_da:3033/pagina_a:3046/intervallo_pagine:3033–3046/volume:77
Publication Year :: 2019
Publisher :: Springer Science and Business Media LLC, 2019.
Abstract: Blend films of polyvinyl alcohol (PVA) and keratoses (KOx) were prepared using water as a common solvent. Aqueous solution of KOx from wool was extracted via oxidation using peracetic acid, and different amounts of PVA were added and blended to obtain films by solution casting method. Blend films were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, differential scanning calorimetry and tensile measurement. The scanning electron microscopy investigation showed that with decreasing PVA amount, film surface becomes rough and uneven. Thermal behavior and Fourier transform infrared analysis pointed that the two polymers have no covalent interaction each other. Also, it is to be noted that increasing the amount of PVA in the blend from 70 to 100% improved the tensile strength of blend films, and the elongation at break increases dramatically in films containing 70–100% of PVA. Moreover, blends containing 90 and 100% of KOx were too brittle for films production.