Electrostatic filter media were developed by incorporating various concentrations of Carbon Black (8, 10 and 12 wt%) on Polyvinylidene Fluoride (PVDF) through electrospinning. The prepared nanofibers were characterized for their morphology, phase transformation, wettability, thermal and predominantly electrostatic properties. Three filtration efficiency parameters such as concentration of CB (wt%), electrospinning time (hr) and areal density of substrate (GSM) were fed in Box Behnken design to obtain 15 experimental STATs. The experiments were performed with NaCl solution as the aerosols in the range of 0.1–1 μm and filtration efficiency as the response. Further, other filter media properties such as pore size, air permeability, pressure drop and thickness are investigated. STAT 12 resulted in the highest filtration efficiency of 99.99% with 12 wt% of CB, 3 h of electrospinning time and 60 GSM of substrate. The prepared filter also shows a maximum filtration efficiency of 99.98% at the most penetrating particle size (MPPS), 0.3 μm. The present research thus opens a pathway for hybrid mechanisms of separation improving filtration efficiency in addition to pre-existing mechanisms.

静电过滤介质是通过静电纺丝在聚偏二氟乙烯 (PVDF) 上加入各种浓度的炭黑（8、10 和 12 wt%）而开发的。制备的纳米纤维的特征在于它们的形态、相变、润湿性、热性能和主要的静电性能。三个过滤效率参数，如 CB 浓度 (wt%)、静电纺丝时间 (hr) 和底物面密度 (GSM)，在 Box Behnken 设计中输入，以获得 15 个实验 STAT。实验采用 NaCl 溶液作为 0.1-1 μm 范围内的气溶胶，过滤效率作为响应。此外，还研究了其他过滤介质特性，例如孔径、透气性、压降和厚度。STAT 12 的过滤效率最高，为 99。99%，含 12 wt% 的 CB，3 小时的静电纺丝时间和 60 GSM 的基材。制备的过滤器在最大穿透粒径 (MPPS) 0.3 μm 时也显示出 99.98% 的最大过滤效率。因此，本研究为混合分离机制开辟了一条途径，除了预先存在的机制外，还能提高过滤效率。