Plasma-induced grafting of polyaniline on polyester fabric for gas sensing application
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Plasma-induced grafting of polyaniline on polyester fabric for gas sensing application Ashish A. Nimbekar1,2 and Rajendra R. Deshmukh1,* 1 2
Department of Physics, Institute of Chemical Technology, Matunga, Mumbai 400019, India Deccan Education Society’s Kirti M. Doongursee College, Dadar (W), Mumbai 400028, India
Received: 14 July 2020
ABSTRACT
Accepted: 7 October 2020
In this work, we have grafted Polyaniline (PANI) on polyester fabric by Chemical oxidative polymerization of aniline monomer using Ammonium per sulphate (APS) as oxidant and Sodium salt of dodecyl benzene sulfonic acid (DBSA) as a co-dopant. For better deposition and adhesion of PANI on the surface of polyester fabric, low-pressure radio frequency (RF) oxygen (O2) plasma treatment is applied to the fabric prior to grafting of PANI. Characterization of conducting fabrics is done using ATR-FTIR Spectroscopy, Scanning electron microscopy (SEM), Contact angle measurement, X-ray Photoelectron spectroscopy (XPS) and Sheet resistance measurement. It is observed that O2 plasma treatment enhances uniformity of grafting, conductivity and gives strong interfacial bonding of PANI on the surface of polyester fabric. O2 plasmatreated fabrics followed by grafting with PANI was then investigated for detection of ammonia gas.
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Springer Science+Business
Media, LLC, part of Springer Nature 2020
1 Introduction Smart textiles or conducting fabrics are materials that sense and respond to external variations from mechanical [1], Chemical [2], Optical [3], Thermal [4] or other sources [5]. Interest in conducting fabrics used in medical, sports, military, and energy applications has increased remarkably during last few decades. They have ability to do some sort of processing, analysing or responding. They can be described as textiles materials that think for themselves. At present, flexible, lightweight and wearable electronics are of interest to the new generation. Conducting fabrics are the key components needed to
satisfy this interest. Conducting fabrics have many electrical and mechanical properties depending on the structure of fabrics and nature of conducting coating. Such conducting fabrics have numerous applications like gas and vapour sensing [6–9], strain sensing [10], electrodes for supercapacitors [11, 12], electromagnetic shielding [13], water sterilization [14], adhesive material [15] etc. Electrically conducting fabrics have been produced by deposition of conducting polymers like Polyaniline, Polythiophene, Polypyrrole, etc. on the fabric surface using various methods like chemical polymerization, electrochemical polymerization, plasma polymerization etc. [16–19]. Among conducting polymers, PANI has
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https://doi.org/10.1007/s10854-020-04628-5
J Mater Sci: Mater Electron
received wide-spread attention because of its outstanding properties including simple and reversible doping-de-doping chemistry, stable electrical conduction mechanism, high environmenta
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