Optimization of centrifugally spun thermoplastic polyurethane nanofibers for air filtration applications

Gundogdu N. A. S., Akgul Y., Kılıç A.

AEROSOL SCIENCE AND TECHNOLOGY, vol.52, no.5, pp.515-523, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 52 Issue: 5
  • Publication Date: 2018
  • Doi Number: 10.1080/02786826.2018.1433813
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.515-523
  • Istanbul Technical University Affiliated: Yes


While our knowledge of fiber formation by using conventional nanofiber spinning techniques has increased to a considerable extent, there are still few studies on centrifugal spinning either in academia or in the industry. Centrifugal spinning is a comparatively new method of producing fibers having nano- or microscale diameters. In this study, three main parameters (nozzle orifice diameter, rotational speed, polymer concentration) of centrifugal spinning were optimized to produce air filter media from thermoplastic polyurethane nanofibers. The effect of concentration of polymer solution was found to be a major contributor in TPU fibers optimization estimating 77.5%. After the optimization studies, the average fiber diameter of nanofiber sample produced at optimum conditions (22G needle as an orifice, 4000rpm, and 10wt% concentration of polymer solution) was 205 84nm. Aerosol filtration performance of the produced webs was analyzed. Filtration efficiency of the optimized sample was found to be 99.4% for 0.3 mu m particle size at an expense of 98Pa pressure drop.Copyright (c) 2018 American Association for Aerosol Research