摘要
使用改进的hummers法制备了氧化石墨烯,并用抗坏血酸还原了氧化石墨烯制备了具有疏水性能的rGO。使用静电纺丝的方法制备了PLA/rGO纳米纤维膜,探究了rGO的加量对PLA纳米纤维膜疏水性的影响。PLA/rGO纳米纤维膜的红外光谱与拉曼光谱图表明PLA与rGO为物理混合,在静电纺丝的过程中没有发生化学变化。研究发现在rGO加量为0.14%时,纳米纤维膜的接触角从118°增加到了139.2°,并且实验证明此膜具有良好的耐酸碱能力,滴定不同pH的溶液时,此膜的接触角均能达到125°以上。从油水分离实验发现PLA/rGO纳米纤维膜的油通量能达到141.3 L/(m^(2)·h),油水分离效率能达98.6%。
Graphene oxide is prepared by improved Hummers method,and reduced by ascorbic acid to prepare rGO with hydrophobic properties.PLA/rGO nanofiber membrane is prepared by electrospinning,and the effect of the amount of rGO on the hydrophobicity of PLA nanofiber membrane is investigated.The infrared and Raman spectra of PLA/rGO nanofiber films show that PLA and rGO are physically mixed,and there is no chemical change in the process of electrospinning.It is found that the contact angle of nanofiber membrane increases from 118°to 139.2°when the amount of rGO is 0.14%,and the experiment shows that the membrane has good acid-base resistance.When titrating the contact angle of different pH,the contact angle of the membrane can reach more than 125°.From the oil-water separation experiment,it is found that the oil flux of PLA/rGO nanofiber membrane can reach 141.3 L/(m^(2)·h),and the oil-water separation efficiency can reach 98.6%.
作者
杜国勇
段艺
袁巧
胡四维
DU Guoyong;DUAN Yi;YUAN Qiao;HU Siwei(School of Chemistry and Chemical Engineering, Southwest Petroleum University,Chengdu 610500, China)
出处
《功能材料》
CAS
CSCD
北大核心
2022年第3期3162-3166,共5页
Journal of Functional Materials
基金
油气田应用化学四川省重点实验室开放基金项目(YQKF202122)。
关键词
静电纺丝
聚乳酸
还原氧化石墨烯
疏水性
油水分离
electrospinning
polylactic acid
reduced graphene oxide
hydrophobicity
oil-water separation
