Stability of antibacterial modification of nanofibrous PA6/DTAB membrane during air filtration

• DOI: 10.1016/j.msec.2018.11.065
• Publication Date: 2018-11-28T17:01:06Z
• Authors: Petr Ryšánek; Pavla Čapková; Jiří Štojdl; Josef Trögl; Oldřich Benada; Martin Kormunda; Zdeňka Kolská; Marcela Munzarová
• Keywords: Air Filters; Anti-Infective Agents; Polymers; Nanofibers; Caprolactam; Membranes, Artificial; 01 natural sciences; 0104 chemical sciences

Stable antimicrobial nanofibrous membrane for air filtration based on polyamide 6 (hereafter PA6) modified by 1-dodecyltrimethylammonium bromide (DTAB) has been prepared by electrospinning using one-step technology, i.e. with modifying antimicrobial agent dissolved in spinning solution. Stability of antibacterial membrane function has been tested by air-blowing test to prove the permanency of chemical composition and antibacterial activity. X-ray diffraction, high-resolution scanning electron microscopy (HRSEM) revealed the effect of modifying agent on structure and morphology of PA6 nanofibres. X-ray photoelectron spectroscopy, electrokinetic analysis and antibacterial tests proved the stability of chemical composition and antibacterial activity after air-blowing tests. Special air-blowing device has been constructed for this purpose. The results prove the applicability so prepared membrane for a long-term air-conditioning.