静电纺丝
膜
材料科学
极限抗拉强度
过滤(数学)
纳米纤维
复合材料
化学工程
碳纳米管
色散(光学)
粒径
聚对苯撑
高分子化学
聚合物
化学
生物化学
统计
数学
物理
光学
工程类
作者
Xinjiao Tian,Yongfeng Huang,Yajing Lu,Zhenming Li,Lifen Liu,Qianqian Wang,Limei Sun,Lin Gu,Jingxian Liu
标识
DOI:10.1016/j.seppur.2023.126193
摘要
The development of nanofibrous membrane with exceptional filtration efficiency, excellent mechanical properties, and high-temperature resistance poses a significant challenge in the field of industrial dust removal. Incorporating multi-walled carbon nanotubes (MWCNTs) into poly(m-phenylene isophthalamide) PMIA enhances the mechanical properties of nanofibrous membrane fabricated via electrospinning. However, the application of MWCNTs is limited due to their poor dispersion and self-aggregation in solvents. Herein, amino-modified MWCNTs (MWCNTs-NH2) grafted with chlorosulfonated PMIA (PMIA-SO2Cl) nanofibrous membrane was fabricated via electrospinning. The results demonstrated that the coupling effect of PMIA-SO2Cl and MWCNTs-NH2 significantly enhanced the stability of MWCNTs in the PMIA electrospinning solution, resulting in a more homogeneous dispersion of MWCNTs and a smaller average particle size (D50 = 198.03 nm). The filtration efficiency of the most penetrating particle size (MPPS) and the tensile strength of PMIA-SO2Cl/MWCNTs-NH2 nanofibrous membrane were 99.990 % and 57.514 MPa, respectively. The tensile strength retention rates in 30 wt% H2SO4 and 10 wt% NaOH were 52.56 % and 80.25 %, respectively. The MWCNTs-NH2/PMIA-SO2Cl nanofibrous membrane exhibited significantly enhanced mechanical property, filtration efficiency and high-temperature resistance (approximately 250 °C) compared to the unmodified nanofibrous membranes. This study was instructive for the application of electrospinning nanofibrous membranes in the field of high-temperature dust removal.
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