High-Temperature Bearable Polysulfonamide/Polyurethane Composite Nanofibers’ Membranes for Filtration Application |
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| Authors: | Yajian Li Jinfa Ming Ding Yuan Xin Ning |
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| Affiliation: | 1. Industrial Research Institute of Nonwovens and Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao, 266071 P. R. China;2. Industrial Research Institute of Nonwovens and Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao, 266071 P. R. China
Shandong Center for Engineering Nonwovens, Qingdao, 266071 P. R. China |
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| Abstract: | Polysulfonamide (PSA)-based membranes are widely used for high-temperature filtration. PSA/polyurethane (TPU) composite membranes that can withstand a temperature exceeding 200 °C are fabricated by an electrospinning method. The effects of PSA/TPU mass ratio on the morphology and properties of the prepared composite membranes are investigated to obtain nanofibers with different diameters. These composite membranes are characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR), and differential scanning calorimetry, and mechanical and filtration properties of membranes are also investigated. The maximum stress and elongation at break of PSA/TPU nanofibers’ membranes reach 13.66 ±1.43 MPa and 75.01 ± 3.78%, respectively, when the PSA/TPU mass ratio is 3:7. Moreover, filtration results show high filtration efficiency (>99%) and low pressure drop for diethyl-hexyl-sebacat (DEHS) and sodium chloride (NaCl) aerosol particles at 4 m3 h−1 airflow velocity. Therefore, PSA/TPU composite membranes are a promising candidate for high-temperature filtration applications. |
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| Keywords: | electrospinning filtration nanofibers polysulfonamide polyurethane |
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