Preparation of a Highly Effective PMIA/BaTiO3 Nanofiber Membrane for Particulate Matter Removal Under High Temperature

Abstract

Particulate matter (PM) pollution is widely recognized as a major threat to public health, making the development of thermally stable filters for particulate removal in high-temperature environments critically important. However, the common polymer-based nanofiber air filters are inadequate stability when exposed to high temperature. In this study, the poly (m-phenylene isophthalamide) (PMIA) and nano barium titanate (BaTiO₃) which showed remarkable thermal endurance was utilized to prepare the PMIA/BaTiO₃ composite nanofiber air filter. The structure and performance of nanofibers were regulated by changing the addition of BaTiO₃. The PMIA/BaTiO₃ nanofiber air filter with nano-protrusion structure exhibits high PM2.5 filtration efficiency (98.7%) and low pressure drop (60.4 Pa). Even after being exposed to treatment at 250°C, the PMIA/BaTiO₃ composite nanofiber air filter can still maintain stable filtration performance. The results showed that PMIA/BaTiO₃ nanofiber materials hold promise for eliminating particulate matter in high-temperature environments.