采用静电纺丝技术,以聚丙烯腈(PAN)为前驱体、氧化石墨烯(GO)和纳米纤维素(CNFs)为改性添加剂,经过预氧化和碳化处理制备多功能型复合碳纳米纤维膜,考察了不同GO和CNFs质量分数以及碳化温度对复合纤维膜理化性能的影响。结果表明,随着GO和CNFs质量分数的不断提高,复合纤维膜的疏水性能和导电性能均单调递增,在m(GO)∶m(CNFs)=1∶2、GO质量分数为4%时,复合纤维膜水接触角达到142.98°,与纯PAN碳纳米纤维膜相比提高近1倍;电导率为1.894 S/cm,比原来提升207%;吸油系数在GO质量分数为3%时达到最大,继续添加改性剂,吸油性能反而出现下降趋势。

Multifunctional composite carbon nanofiber membrane is prepared via electrospinning technology with polyacrylonitrile (PAN) as precursor,graphene oxide (GO) and nanocellulose (CNFs) as modified additives after pre-oxidation and carbonization.The effects of the mass fractions of GO and CNFs,and carbonization temperature on the physicochemical properties of the composite fiber membrane are investigated.Results show that with the increasing mass fractions of GO and CNFs,the hydrophobic and conductive properties of the membrane increase monotonically.When m(GO)/m(CNFs)=1∶2 and the mass fraction of GO is 4%,the water contact angle of the membrane reaches 142.98°,which is nearly twice that of pure PAN carbon nanofiber membrane.Its conductivity is 1.894 S·cm^-1,207% higher than that of the original.The oil absorption coefficient of the membrane reaches the maximum when the mass fraction of GO is 3%,while the oil absorption performance decreases when more modifier is added.

孟凡杰(1999-),男,硕士研究生,主要研究方向为静电纺丝生物质碳纳米纤维复合材料,1632503227@qq.com。