Kitosan katkılı poliamid-6/selüloz asetat (PA6/CA) nanofiber kompozit membran üretimi ve membran geçirgenliklerinin araştırılması

Gül A., Tiyek İ.

PAMUKKALE UNIVERSITY JOURNAL OF ENGINEERING SCIENCES-PAMUKKALE UNIVERSITESI MUHENDISLIK BILIMLERI DERGISI, cilt.31, sa.6, ss.1083-1092, 2025 (ESCI, TRDizin)

Özet

PA6 nanofiber composite membranes are expected to be limited in their application area in the future, as they will be affected by environmental and sustainability policy sanctions due to their weak hydrophilic effects under high pressure and being hydrocarbon-based raw material. In this study, bio-based chitosan-doped PA6/CA composite nanofiber membrane surfaces were prepared using the electrospinning method. Nanofiber-structured composite membrane surfaces were prepared at different mixing ratios to improve the hydrophilic and permeability properties of the composite membranes, depending on the chitosan doping ratio. Membranes were characterized by SEM images, pore size, pore ratio, and contact angle measurements. Tensile and bursting strength and air permeability tests were performed to measure the mechanical properties of the membranes. The study was carried out using two types of water, pure and salt water, to determine the permeability and ion retention properties of the prepared membranes. The results showed that chitosan-doped PA6/CA composite structured nanofiber membrane surfaces played an important role in increasing the hydrophilicity. It was determined that depending on the chitosan additive ratio, the pore size decreased and accordingly the air permeability decreased. It was observed that there was a decrease in pure water permeability in parallel with the reduction in tensile and bursting strength. However, an increase in ion retention was observed in the study performed with salt water. All these results show that chitosan-doped PA6/CA nanofiber composite membranes can be very promising for microfiltration applications with their hydrophilic, mechanical, and permeability values.