Author/Authors :
Ahmad Rahimpour Nanotechnology Research Institute, Faculty of chemical engineering, Babol University of Technology, Babol, Iran , Mohsen Jahanshahi Nanotechnology Research Institute, Faculty of chemical engineering, Babol University of Technology, Babol, Iran , Majid Peyravi Nanotechnology Research Institute, Faculty of chemical engineering, Babol University of Technology, Babol, Iran , Arash Molahoseini Nanotechnology Research Institute, Faculty of chemical engineering, Babol University of Technology, Babol, Iran
كليدواژه :
Thin film nanocomposite , Nanofiltration , mixed matrix membrane , interfacial polymerization , antibacterial effect
چكيده لاتين :
This paper aims to development of a new concept for formation of mixed matrix nanofiltration (NF)
membranes by interfacial polymerization of nanocomposite thin films on porous polyethersulfone
support. Nanocomposite films created for this study comprise silver (Ag) nanoparticles embedded
within ultra thin polyamide films in order to produce antibacterial properties. Thin film composite
(TFC) polyamide membranes exhibit a rough and dense film was formed on the PES support
membrane, whereas thin film nanocomposite membranes have measurably rougher and larger pore
size. At the 0.05 wt.% Ag nanoparticles loadings, nanocomposite film morphology is visibly different
and water flux is much more that of polyamide membranes with slight decrease in salt rejections. A
quantitative method was used to investigate the antibacterial properties of the nanocomposite
membranes. The optical density decreases with increasing the number of circles meaning that the
antibacterial effect becomes more obvious. As a concept, thin film nanocomposite membrane
technology may offer new degrees of freedom in tailoring NF membrane separation performance and
antibacterial properties.
