Development of polyurethane/non-woven fabric composite as a protective device for filtering ultrafine particles in air and absorption of CO₂

In this study we proposed a processing method for improving the filtering capacity of conventional non-woven fabric used in air mask filters by electrospinning polyurethane nanofibers onto the surface of the non-woven fabric. We used FGM technology in controlling different electrospinning parameters to test which is the optimal process method for manufacturing. The morphology of the nanofiber in the non-woven fabric surface was investigated using FESEM. The filter test is done using an air filter chamber device that we constructed and fitted with CO₂and dust sensors. We tested the influence of the parameters (Distance from tip to collector, Electrospinning Time) in UFP filtration effectivity and CO2 absorbance.