纳米纤维
材料科学
静电纺丝
膜
超滤(肾)
复合材料
溶剂
极限抗拉强度
焊接
化学工程
聚合物
化学
色谱法
有机化学
生物化学
工程类
作者
Xiongfei Du,Han-Wen Zheng,Yuxin Zhang,Naijia Zhao,Mingxing Chen,Qinglin Huang
标识
DOI:10.1016/j.jtice.2022.104512
摘要
Poly (m-phenylene isophthalamide) (PMIA) has been widely used in many applications due to its excellent thermal stability, flame resistance and mechanical properties. In this study, PMIA nanofiber membranes were fabricated by electrospinning method, and then, the solvent welding was used to optimize the pore structure and mechanical strength. Effects of solvent concentration (volume fraction of solvent) and welding temperature on the PMIA nanofiber membranes' morphology, pore structure and mechanical properties were investigated, respectively. The mechanical strength and pore size was simply controlled by solvent welding and heat pressing. And the process of solvent welding and heat pressing was classifiable regulation. In addition, the separation accuracy of nanofiber membrane was controllable in the range of ultrafiltration. The mechanical strength of PMIA nanofiber membrane raised from 5.5 MPa to 99.0 MPa, while the mean pore size decreased from 459.1 nm to 33.6 nm after post-treatment. The Congo red rejection rate of PMIA nanofiber membrane after heat pressing increased from 4.9% to 94.7%, which showed excellent ultrafiltration performance.
科研通智能强力驱动
Strongly Powered by AbleSci AI