一浴浸渍还原法石墨烯导电棉针织物的制备

Preparation of Graphene Conductive Cotton Knitted Fabrics by One Bath Dipping-reduction Method

采用氧化石墨烯(GO)分散液对棉针织物进行一浴浸渍还原法导电整理。探讨GO浓度、还原剂用量、还原温度、还原时间、GO分散液pH值、织物浸渍时间等条件对棉针织物性能的影响。再通过拉曼光谱、扫描电子显微镜(SEM)等对石墨烯导电织物进行表征分析。结果表明,GO浓度2.0 g/L时对棉针织物一浴浸渍还原处理的最佳工艺条件为GO分散液p H值6,浸渍时间100 min,保险粉20.0 g/L,在100℃条件下还原90 min,棉针织物的表面电阻降低至2.67 KΩ/cm,且从拉曼光谱分析中可以看出,经一浴法处理后分散液中的GO较充分地还原成还原氧化石墨烯(RGO)。由导电棉针织物的SEM可知,经GO整理后织物表面沉积了一层还原氧化石墨烯(RGO)薄膜,且GO浓度越高织物表面沉积的RGO越多。

The graphene oxide(GO) is used to finishing cotton knitted fabrics by one bath dipping-reduction method. The effects of GO dosage, reductant dosage, reduction temperature, reduction time, GO pH value,temperature, dipping time on conductive properties of cotton fabrics are discussed. And the Raman and SEM of cotton fabrics are analyzed. The results show that the optimal process for finishing of cotton fabrics with GO(2 g/L)was pH 6, dipping 100 min, sodium hydrosulfite 20 g/L, reduction at 100 ℃ for 90 min, the surface resistance of the cotton fabric is decreased to 2.67 KΩ/cm, and it can be seen from the Raman spectroscopy that the GO in the dispersion is reduced to reduced graphene oxide(RGO) more fully. It is known from the SEM of conductive cotton fabric that a RGO film is deposited on the surface of the fabric, and the higher the GO concentration, the more the deposition of RGO on the surface of cotton fabric.