PREPARATION AND CHARACTERIZATION OF POLY (META-PHENYLENE ISOPHTHALAMIDE) MICROPOROUS MEMBRANES BY COAXIAL ELECTROSPINNING

摘要

Owing to their superior properties, especially high porosity and surface areas, porous fibers and membranes have received widespread attention in the fields of tissue engineering, filtration, catalysis, electronics, etc. In this study, poly (meta-phenylene isophthalamide, PMIA) fiber mats with fatty acids encapsulated are first fabricated by coaxial electrospinning. After prolonged extraction with hot ethanol, PMIA fibrous membranes formed by individual porous fibers and sandwich-structured membranes are obtained. The morphology and microstructure of the resulting membranes are characterized by field emission scanning electron microscopy (FE-SEM) and confocal laser scanning microscopy (CLSM), while their thermal behavior is investigated by thermogravimetric analysis (TGA). Given their special structure and excellent thermal resistant performance, the prepared microporous membranes are expected to have wide prospects for high temperature applications.