Author, institution: Jonas Matulevičius, Kaunas University of Technology
Science area, field: Technological sciences, Chemical engineering, 05T
The Doctoral Dissertation is available at the library of Kaunas University of Technology (K. Donelaičio St. 20, Kaunas).
Scientific Supervisor: Prof., Dr. Linas KLIUČININKAS (Kaunas University of Technology, Technological sciences, Chemical engineering, 05T)
Dissertation defence board of Chemical Engineering Science Field:
Prof., Dr. Raimundas ŠIAUČIŪNAS (Kaunas University of Technology, Technological sciences, Chemical engineering, 05T) – chairman;
Prof., Dr. Habil. Juozas Vidas GRAŽULEVIČIUS Kaunas University of Technology, Technological sciences, Chemical engineering, 05T)
Dr. Kęstutis KVIETKUS (Center for Physical Sciences and Technology, Physical Sciences, Physics, 02P)
Prof., Dr. Jolanta LIESIENĖ (Kaunas University of Technology, Technological sciences, Chemical engineering, 05T)
Prof., Dr. Habil. Ireneusz ZBICINSKI (Lodz University of Technology, Poland, Chemical Engineering, 05T)
Annotation:
The decreasing fiber diameter leads to a better filtration efficiency, thus the use of nanofibers for air filtration applications is an innovative area. Aim of the thesis – to produce nanofibers by using electrospinning and investigate the characteristics as well as to perform the comparative evaluation of filtration properties of nanofiber media in an air stream. The experimental setups for electrospun nanofiber media formation and filtration testing were developed in this work. The thesis presents the detailed characterization of the effects of the polymer concentration as well as electrospinning parameters on the characteristics of nanofiber media. The comparative evaluation of filtration properties of nanofiber media produced from various polymeric materials was performed. The evaluation was based on the assessment and comparison of filters quality factors of one-ply and multi-ply nanofiber media, and filtration efficiency of polystyrene latex and sodium chloride aerosol particles through the nanofiber media. The experimental showed that polyvinyl acetate and polyacrylonitrile media have the highest filtration efficiencies and quality factors. Due to the unique morphology of the beaded nanofibers, the polyvinyl acetate media were characterized by the ultimate values of quality factors and filtration efficiencies: 0.0548 Pa-1 (98.79 %) for 100 nm particles and 0.0423 Pa-1 (96.79 %) for 300 nm particles, accordingly.
