Gültekin Bekir Cenkkut
Department of Textile Engineering, Faculty of Technology, Marmara University, İstanbul, Turkey.
Turk J Chem. 2022 Feb 23;46(4):968-986. doi: 10.55730/1300-0527.3408. eCollection 2022.
In this study, cotton spunlace nonwoven fabrics with four different basis weights were coated with graphene oxide (GO) by conventional dip coating method which is one of the most simple and effortless process in textile industry. The graphene oxide coated cotton nonwoven fabrics were immersed in an aqueous sodium dithionite solution in order to obtain reduced graphene oxide (RGO) coated cotton spunlace nonwoven fabrics. The obtained nonwoven fabrics became electrically conductive with very low surface electrical resistivity of 5.98 × 10 W/sq for the 70 g/m basis weight nonwoven fabric. The color measurements and reflectance spectrophotometry were performed in order to identify the coating and reduction process of GO on cotton nonwoven fabrics. The hydrophobic characteristic of the GO and RGO coated cotton nonwoven fabrics were determined by the means of water contact angle. The ultraviolet (UV) blocking ability of the cotton nonwoven fabric both coated with GO and RGO were analyzed by the UV transmittance analyzer. The water contact angle results revealed that the hydrophilic cotton nonwoven fabric became hydrophobic due to the reduction of GO. It was also found that the ultraviolet protection factor (UPF) depends on the basis weight of the cotton nonwoven fabric and the reduction of GO.
在本研究中，采用传统浸涂法对四种不同定量的棉水刺非织造布进行氧化石墨烯（GO）涂层处理，这是纺织工业中最简单、最容易的工艺之一。将氧化石墨烯涂层的棉非织造布浸入连二亚硫酸钠水溶液中，以获得还原氧化石墨烯（RGO）涂层的棉水刺非织造布。对于70g/m²定量的非织造布，所得非织造布具有导电性，表面电阻率非常低，为5.98×10Ω/sq。进行颜色测量和反射分光光度法，以确定GO在棉非织造布上的涂层和还原过程。通过水接触角测定GO和RGO涂层棉非织造布的疏水特性。用紫外线透过率分析仪分析涂覆有GO和RGO的棉非织造布的紫外线（UV）阻隔能力。水接触角结果表明，由于GO的还原，亲水性棉非织造布变成了疏水性。还发现紫外线防护系数（UPF）取决于棉非织造布的定量和GO的还原程度。
