Abstract
Cotton fabrics were modified by xerogel coatings with dispersed particles of graphene (Gr) or reduced graphene oxide (RGO). To obtain a stable dispersion of Gr or RGO in organo-silicon sol, sodium lauryl sulfate as an anionic surfactant was used. The fabrics were padded with the organo-silicon sol containing dispersed Gr or RGO, forming a thin xerogel coating after drying. The fabrics coated with the xerogel containing 0.5–1.5 wt% of RGO or Gr were prepared and examined. The best anti-static properties were obtained for the coating with 1.5 wt% of Gr, whose surface resistance and volume resistance were on the order of 105 and 103 Ω, respectively. Such properties make the fabric suitable for protective cloths in the environment with explosive atmosphere.
Highlights
The unique properties of graphene (Gr) and recent development of methods of its manufacture have caused strong interest in this novel material, in its application in electronics (Mao et al 2014; Randviir et al 2014; Yuan et al 2014)
Binding the thin coatings prepared by the sol–gel method to the fiber surface can be significantly improved by using to preparation of film-forming sols the proper organo-silicon precursors, having active functional groups capable of physical or chemical interactions with functional groups on fibers surfaces (Textor and Mahltig 2008), mainly hydroxyl groups in the case of cellulose and polyester fibers
In our study we explored the possibility of modification of cotton textiles with reduced graphene oxide (RGO) and Gr by dispersing them in nanocoatings, deposited on cotton fiber surface by the sol–gel method
Summary
The unique properties of graphene (Gr) and recent development of methods of its manufacture have caused strong interest in this novel material, in its application in electronics (Mao et al 2014; Randviir et al 2014; Yuan et al 2014). Imparting conductivity to textiles with deposited GO requires its reduction to reduced graphene oxide (RGO) by chemical and/or thermal methods (ShateriKhalilabad and Yazdanshenas 2013b; Shen et al 2016; Zhang et al 2016). Those methods of making textiles electro-conducting encounter certain limitations. The efficiency of GO reduction depends on the type and concentration of the reducing agent and the conditions (for instance time and temperature) of the process These factors may contribute to the deterioration of the strength of such modified textiles. If the high temperature necessary for GO reduction exceeds the degradation temperature of the textile (Cai et al 2017; Konios et al 2014; Shateri-Khalilabad and Yazdanshenas 2013a; Wang et al 2017), the textile properties can be negatively affected
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