Technology: general issues alumina (Al2O3) coating antibacterial antimycotic barrier antimicrobial properties carbon soot coatings cellulose textile material chemical resistance click chemistry coatings composite coating composite parts of a garment fluorinated epoxy graft copolymers magnetite nanoparticles microencapsulation multifunctional nanodispersed fillers nanostructured polymer coating oleophobic polyacrylate dispersion polyelectrolyte microcapsules polypropylene yarn polytetrafluoroethylene self-cleaning silica silver super-nonwettable superhydrophobic surface electrical resistance