PVA/氧化石墨烯纳米复合纤维制备及性能研究

Preparation and Performance of PVA/Graphene Oxide Nanocomposite Fibers

采用改进的Hummers方法制备氧化石墨烯(GO),并通过静电纺丝法制备PVA/GO纳米复合纤维。利用扫描电镜(SEM)观察纳米纤维的形貌,通过傅立叶变换红外光谱(FTIR)分析了纳米复合纤维的分子结构和化学键,同时通过热重分析(TG)及差示扫描量热法(DSC)测试并分析了纳米复合纤维的热性能。结果表明:GO的添加对PVA纤维静电纺丝有利,制备的纤维条干更均匀;GO与PVA之间形成氢键作用;GO添加量为2.5wt%时,PVA/GO纳米复合纤维的最大分解温度较纯PVA纳米纤维提高11.4°C。

Graphene oxide （GO） was prepared with modified Hummers method, and PVA/GO nanocomposite fibers were prepared by electrostatic spinning. The morphologies of the nanofibers have been observed through scanning electron microscope （SEM）, and molecular structure and chemical bonding have been analyzed through Fourier transforming infrared spectroscopy （FTIR）. The thermal performance of the nanocomposite fibers have been tested and analyzed through TG and DSC. The results show that the adding of GO is favorable for the electrostatic spinning and the prepared fiber yam is more uniform. The hydrogen bands can be formed between PVA and GO. The maximum decomposing temperature of PVA/GO nanocomposite fiber is 11.4 ℃ higher than that of pure PVA nanofibers when the adding amount of GO is 2.5 wt%.