The monodisperse and controlled polymer nanoparticles have attracted much attention in academic and industrial fields. Due to small size and extremely large specific surface area, nanoparticles could be used to the fields of drug delivery system, microencapsulation, chromate graphy, catalyst, organic/inorganic hybrid materials, and templates for porous inorganic materials. The dispersion polyme...

Polyacrylonitrile (PAN) nanofiber membranes of varied thicknesses (20–100 µm) were electrospun at a polymer concentration 14% (w/v) in N,N-Dimethylformamide (DMF); characterized for porosity, pressure drop, air permeability and particle filtration efficiency (PFE). Densities are found very less (0.11 to 0.21 g/cm3), with porosities the range 80–92%, higher porosity was thickness. Membranes used...