氧化石墨烯浸轧-还原法制备导电棉织物

Preparation of electric conductive cotton fabrics by padding-reduction method with graphene oxide

摘要:

采用超声氧化剥离法制备氧化石墨烯（GO），通过浸轧法将GO溶液整理到棉织物上，经过烘干、还原得到还原氧化石墨烯（RGO）整理棉织物。探讨了GO浓度，GO溶液pH、还原条件、浸轧-还原次数等因素对RGO整理棉织物导电性能的影响，采用SEM和Raman光谱对整理棉织物进行表征。研究结果表明，当GO溶液pH=6，质量浓度2.5 g/L，采用质量浓度5 g/L的保险粉于90 ℃对浸轧GO烘干后的棉织物还原30 min，整理棉织物的表面电阻值降低至2220 Ω，经过4次和8次浸轧-还原后棉织物表面电阻值可降低至270 Ω和130 Ω。通过SEM发现RGO能在棉纤维表面形成薄膜并包覆纤维，且随着浸轧-还原次数的增加，棉织物表面沉积的RGO逐渐增多。Raman光谱较好地证实了GO在棉织物表面的沉积，且GO较充分地还原成RGO。通过对整理棉织物的耐洗性能测试发现整理织物的导电耐久性较好。

Abstract:

Ultrasonic oxidation stripping method was applied to preparation graphene oxide (GO). The cotton fabrics padding with GO, then drying the GO padded cotton fabrics, finally the reduced graphene oxide (RGO) coated electric conductive cotton fabrics was obtained by chemical reduction. The influence of GO concentration, pH value, reduction condition, padding-reduction times on electrical conductivity of cotton fabrics was researched. The cotton samples were characterized by SEM and Raman spectra. The washing fastness of the samples was also tested. The results showed that the optimal conductive finishing process, GO 2.5 g/L, pH value of GO solution was controlled about 6, sodium hydrosulfite 5g/L, reduced at 95℃ for 30 min, the surface electric resistance of cotton after 1, 4 and 8 times of padding-reduction process was decreased to 2220 Ω, 270 Ω and 130 Ω, respectively. The SEM results showed that after padding with GO, GO forms a thin film on the surface of the fabric. The Raman results showed that the GO was deposition on the surface of cotton fabrics, and the GO fully reduced to RGO. The result of washable property of electric conductive cotton fabric was found that the conductive durability of the treated fabric is excellent.