Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Fabrication and Filtration Performance Analysis of Hierarchical Nanofiber Mats Based on Heterogeneous Macromolecular Interaction

이종 고분자간 상호작용 기반 계층적 나노섬유 집합체 형성 및 여과 특성 고찰

  • Eunmo Ku (Department of Fiber Convergence Materials Engineering, School of Polymer System, Dankook University) ;
  • Hyun Ju Oh (Advanced Textile R&D Department, Korea Institute of Industrial Technology (KITECH)) ;
  • Yeong Og Choi (Advanced Textile R&D Department, Korea Institute of Industrial Technology (KITECH)) ;
  • Byoung-Sun Lee (Department of Fiber Convergence Materials Engineering, School of Polymer System, Dankook University)
  • 구은모 (단국대학교 고분자시스템공학부 파이버융합소재전공) ;
  • 오현주 (한국생산기술연구원 섬유솔루션 부문) ;
  • 최영옥 (한국생산기술연구원 섬유솔루션 부문) ;
  • 이병선 (단국대학교 고분자시스템공학부 파이버융합소재전공)
  • Received : 2024.01.27
  • Accepted : 2024.02.19
  • Published : 2024.02.29
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Abstract

Nanofibers with ultrafine diameters (< 50 nm) have been reported to exhibit a significant surface area and a high filtration efficiency. Recently, the ionic surfactants have been used for fabricating nanofibers with ultrafine diameters. However, the use of ionic surfactants is not desirable because of the electrophoretic behavior and following instability of the ions with the high electric potential during the electrospinning process. In this study, hierarchical nanofiber assemblies including ultrafine nanofibers with diameters < 50 nm were designed by utilizing heterogenous molecular interactions of different types of polymers with high dipole moments (polyacrylonitrile (PAN), poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP)), and their filtration performances were evaluated based on EN 143 standard. The fraction of nanofibers with ultrafine diameters was adjusted from 4% to 46%, and the β-phase fraction of PVdF increased from the initial 71.6% to a maximum of 85.37%. Among various PAN/PVdF samples, the PAN/PVdF 3:7 represented the highest efficiency of 87.6% even at low basis weight due to its ultrafine diameter, and all samples demonstrated efficiency exceeding 99.3% as basis weight increased. In conclusion, this study successfully achieved process stability and excellent filtration performance by establishing a method to manufacture hierarchical nanofiber assemblies without the use of ionic surfactants, relying solely on the interaction of heterogeneous polymers.

Keywords

Acknowledgement

이 논문은 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원(NRF-2022R1A2C2010760)과 한국생산기술연구원의 지원 (KITECH) (EH230009)을 받아 수행 된 연구임.

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