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 (BaTiO 3 ) which showed remarkable thermal endurance was utilized to prepare the PMIA/BaTiO 3 composite nanofiber air filter. The structure and performance of nanofibers were regulated by changing the addition of BaTiO 3 . The PMIA/BaTiO 3 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/BaTiO 3 composite nanofiber air filter can still maintain stable filtration performance. The results showed that PMIA/BaTiO 3 nanofiber materials hold promise for eliminating particulate matter in high‐temperature environments.