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Improvement of the adhesion of conductive poly(m-toluidine) onto chemically reduced-wool fabrics

Wool has disulphide bonds containing-hydrophobic external keratin layers, which act as a barrier for the modification through coating with hydrophilic materials. For that reason, in this work, to ensure a dense and homogenous conductive polymer coating onto the wool, the fabrics were subjected to th...

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Autores principales: KALKAN ERDOĞAN, Meryem, KARAKIŞLA, Meral, SAÇAK, Mehmet
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Scientific and Technological Research Council of Turkey 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7671207/
https://www.ncbi.nlm.nih.gov/pubmed/33488193
http://dx.doi.org/10.3906/kim-2002-77
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author KALKAN ERDOĞAN, Meryem
KARAKIŞLA, Meral
SAÇAK, Mehmet
author_facet KALKAN ERDOĞAN, Meryem
KARAKIŞLA, Meral
SAÇAK, Mehmet
author_sort KALKAN ERDOĞAN, Meryem
collection PubMed
description Wool has disulphide bonds containing-hydrophobic external keratin layers, which act as a barrier for the modification through coating with hydrophilic materials. For that reason, in this work, to ensure a dense and homogenous conductive polymer coating onto the wool, the fabrics were subjected to the reduction process in the aqueous alkaline medium containing agents that can attack these disulphide bonds. Then, one of the polyaniline derivatives, poly(mtoluidine) (PMT), was coated onto wool by in situ polymerization of m-toluidine sulphate using ammonium persulfate (APS) as an oxidant. The effects of conditions, such as the composition of reduction-bath and types of dopants were investigated, on the mass increase (%) and surface resistivity of the composite. The reduction pretreatment of wool with sodium hydrosulphide significantly improved the coating density, conductivity, and colour shade of PMT on the surface, compared to an untreated one. The coating stability of PMT/wool composite was examined by rubbing test and detergent washing, through surface resistivity measurements. The changes in structural and surface properties of wool fabrics were determined with ATR-FTIR, contact angle, and optical microscopic techniques, respectively. The performance of PMT/wool composite was also examined in the electromagnetic shielding effectiveness (EMSE) measurements within 30 MHz-3 GHz.
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spelling pubmed-76712072021-01-22 Improvement of the adhesion of conductive poly(m-toluidine) onto chemically reduced-wool fabrics KALKAN ERDOĞAN, Meryem KARAKIŞLA, Meral SAÇAK, Mehmet Turk J Chem Article Wool has disulphide bonds containing-hydrophobic external keratin layers, which act as a barrier for the modification through coating with hydrophilic materials. For that reason, in this work, to ensure a dense and homogenous conductive polymer coating onto the wool, the fabrics were subjected to the reduction process in the aqueous alkaline medium containing agents that can attack these disulphide bonds. Then, one of the polyaniline derivatives, poly(mtoluidine) (PMT), was coated onto wool by in situ polymerization of m-toluidine sulphate using ammonium persulfate (APS) as an oxidant. The effects of conditions, such as the composition of reduction-bath and types of dopants were investigated, on the mass increase (%) and surface resistivity of the composite. The reduction pretreatment of wool with sodium hydrosulphide significantly improved the coating density, conductivity, and colour shade of PMT on the surface, compared to an untreated one. The coating stability of PMT/wool composite was examined by rubbing test and detergent washing, through surface resistivity measurements. The changes in structural and surface properties of wool fabrics were determined with ATR-FTIR, contact angle, and optical microscopic techniques, respectively. The performance of PMT/wool composite was also examined in the electromagnetic shielding effectiveness (EMSE) measurements within 30 MHz-3 GHz. The Scientific and Technological Research Council of Turkey 2020-06-01 /pmc/articles/PMC7671207/ /pubmed/33488193 http://dx.doi.org/10.3906/kim-2002-77 Text en Copyright © 2020 The Author(s) This article is distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/4.0/ ), which permits unrestricted use and redistribution provided that the original author and source are credited.
spellingShingle Article
KALKAN ERDOĞAN, Meryem
KARAKIŞLA, Meral
SAÇAK, Mehmet
Improvement of the adhesion of conductive poly(m-toluidine) onto chemically reduced-wool fabrics
title Improvement of the adhesion of conductive poly(m-toluidine) onto chemically reduced-wool fabrics
title_full Improvement of the adhesion of conductive poly(m-toluidine) onto chemically reduced-wool fabrics
title_fullStr Improvement of the adhesion of conductive poly(m-toluidine) onto chemically reduced-wool fabrics
title_full_unstemmed Improvement of the adhesion of conductive poly(m-toluidine) onto chemically reduced-wool fabrics
title_short Improvement of the adhesion of conductive poly(m-toluidine) onto chemically reduced-wool fabrics
title_sort improvement of the adhesion of conductive poly(m-toluidine) onto chemically reduced-wool fabrics
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7671207/
https://www.ncbi.nlm.nih.gov/pubmed/33488193
http://dx.doi.org/10.3906/kim-2002-77
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