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PEDOT Coated Viscose Fibers by Optimized OCVD Process: Washing and Stretch Sensing Properties
Högskolan i Borås, Institutionen Textilhögskolan.
2013 (Engelska)Självständigt arbete på avancerad nivå (magisterexamen)Studentuppsats (Examensarbete)
Abstract [en]

Electroactive textile fibers are key components in smart and interactive textile applications. In previous research on textile base conductive fibers, viscose fibers were coated with poly (3,4-ethylenedioxythiophne) (PEDOT) using oxidative chemical vapor deposition (oCVD) technique[1]. Ferric chloride was used as oxidant and reaction conditions were optimized at which better electrical as well as mechanical properties of conductive viscose fibers could be achieved. In this thesis work, effect of new parameters such as pretreatment of viscose fibers with solvents, drying of oxidant treated viscose fibers at different time and temperature and comparison of two different oxidants have been tried. One new and important oxidant, ferric (III) p-toluene sulfonate or ferric (III) tosylate, used to prepare PEDOT coated viscose fibers and then compared with PEDOT coated viscose fibers prepared using oxidant ferric (III) chloride. Viscose fibers have been treated with two well know solvents, acetone and ethyl acetate before soaking in oxidant solution. Oxidant enriched fibers dried at different temperature for variable time prior to polymerization step. Knitted structures of conductive viscose fibers have been prepared. Hand washing of PEDOT coated viscose fibers with tap water and machine washing of knitted structures according to the international standard ISO EN-6330 have been performed and washing effects were investigated. Effects of all of the above mentioned variables on electromechanical properties of PEDOT coated viscose fibers were studied by using tensile testing, TGA analysis, FTIR spectra and conductivity measurements. Stretch sensing properties of knitted structures; before and after washing, were determined on cyclic tester. The purpose of this study is to enhance the properties of PEDOT-coated viscose fibers by controlling different parameters and to evaluate their usage as stretch sensors as well as to check the washability of PEDOT coated viscose fibers and knitted structures. Better electromechanical properties were achieved on new parameters and PEDOT coated viscose fibers were successfully utilized as stretch sensors. PEDOT coated viscose fibers could have potential to apply in areas such as, military textiles, medical textiles and sensors.

Ort, förlag, år, upplaga, sidor
University of Borås/Swedish School of Textiles , 2013.
Serie
Magisteruppsats ; 2011.7.6
Nyckelord [en]
Viscose yarn, conductive polymers, PEDOT, ferric (III) chloride, ferric tosylate (p-toluene sulfonate), stretch sensors
Nationell ämneskategori
Design
Identifikatorer
URN: urn:nbn:se:hb:diva-17482Lokalt ID: 2320/13038OAI: oai:DiVA.org:hb-17482DiVA, id: diva2:1309391
Anmärkning
Program: Master programme in Textile TechnologyTillgänglig från: 2019-04-30 Skapad: 2019-04-30

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