Polypyrrole/barium titanate/poly(acrylonitrile-co-methylacrylate)–deposited cotton fabrics: Electromagnetic shielding

Abstract

In this study, polypyrrole was deposited separately on barium titanate, barium titanate-poly (acrylonitrile-co-methylacrylate) nanocomposite-coated textile fabrics by an in-situ chemical polymerization process. Electromagnetic shielding effectiveness, electrical conductivity, chemical structure, and morphology of fabrics were fully characterized and systematically studied for investigation of individual effects of barium titanate, pyrrole polymer, and barium titanate-poly (acrylonitrile-co-methylacrylate) on obtained fabrics’ conductivity and shielding behaviour. Electromagnetic shielding effectiveness of the fabrics was determined according to the ASTM D4935-10 protocol, by using a coaxial transmission line measurement technique in the frequency range of 15–3000 MHz. Electrical characteristics were measured by the two-end method. Electromagnetic shielding effectiveness data suggested that polypyrrole-coated fabrics had better electromagnetic shielding effectiveness than polypyrrole-barium titanate and barium titanate-poly (acrylonitrile-co-methylacrylate)-coated fabrics. On the other hand, conductivity increased due to the interaction between polypyrrole and barium titanate-poly (acrylonitrile-co-methylacrylate), with fabric conductivity values also increased with the use of barium titanate. Spectroscopic characterizations of coated fabrics were determined using Fourier transform infrared spectroscopy. Analyses demonstrated that there is a strong interaction between cotton and polypyrrole and barium titanate, and also with poly (acrylonitrile-co-methylacrylate)-barium titanate. Morphological characterizations of the coated fabrics were examined by scanning electron microscopy. Colour measurements of fabric samples were performed for determination of colour intensity as a function of polymerization efficiency.

Electrochemical and semiconducting properties of multifunctional smart conductive fabrics based on polypyrrole

“…This is also consistent with the fact that the size of nanostructures oxidized by FeCl 3 + APS is smaller than that of the samples oxidized by APS. 20 Also, same results are indicated in the literature that FeCl 3 has positive effect on conductivity and a more thin coating. 37 It has been reported that PPy prepared with APS and FeCl 3 oxidant displays resistivity well, in which FeCl 3 shows higher conductivity and also smaller particle size than APS.…”

“…After the BaTiO 3 -P(AN-co-MA) nanocomposite coating process, polypyrrole was deposited on nanocomposite-coated textile fabric by a chemical polymerization process that was reported before. 20 In order to achieve this, fabric coated with BaTiO 3 -P(AN-co-MA) nanocomposite was submerged completely in a solution containing 0.015 M DBSA and subsequently was cooled to a temperature range of 5-8 C. Next, a solution of pyrrole with a concentration of 0.1 M was introduced into the solution, followed by the gradual addition of a solution containing 0.026 M APS. The polymerization process was continued at 5-8 C, $pH 6 for 45 min and prepared fabric was named PBA.…”

“…[5][6][7]17 During the years, many researchers reported different methods to produce fabrics with electrical conductivity. Among these methods, loading of nanoparticles on fabric surfaces like padding, 18 graft polymerization, 19 and dip coating 20 were attractive. There are several studies about nanoparticle-loaded textiles.…”

Metal–organic framework‐derived high‐performance polypyrrole/Ni‐CAT/PI fiber paper‐based electromagnetic shielding composites for high‐frequency electromagnetic wave absorption

“…[22,30,31] Polypyrrole (PPy) is a conductive polymer that is widely used in the fields of supercapacitors, electrode materials, EMI shielding and pressure sensors due to its easy synthesis, good electrical conductivity and high chemical stability. [32][33][34][35] Therefore, we can combine inorganic and organic materials to optimize the conductive network structures of paper-based EMI shielding materials and enhance the EMI shielding effect. More importantly, interactions between PPy and MOFs may enhance the binding between fibers, MOFs and PPy and alleviate stripping between MOFs and fibers in long-term practical applications.…”

A critical review: Electromagnetic shielding for pyrrole used textile materials

“…However, they are inflexible, expensive and heavy, they are open to oxidation and corrosion, which create a limitation for using these metals directly. Researchers have begun to use textile surfaces obtained from conductive polymers and textile-based composite materials instead of metals [6][7][8][9]. These materials, which are used instead of metals, have become more preferred recently due to their features such as being light, flexible and low cost [10].…”