Study on the thin film composite poly(piperazine-amide) nanofiltration membrane: Impacts of physicochemical properties of substrate on interfacial polymerization formation

Improved performance of polyamide thin-film composite nanofiltration membrane by using polyetersulfone/polyaniline membrane as the substrate

“…It was revealed that PSf substrate with an average surface pore size of 150 nm exhibited a thinner PA layer, potentially leading to a high degree of defects and low salt rejection efficiency. The study of Misdan et al [7,22] also indicated that the thickness of the PA layer increased with the decrease of the surface pore size of PSf substrate. Extensive studies conducted by Ghosh and Hoek [18] investigated the impact of PSf support properties on the separation performance of PA TFC membrane formed by interfacial polymerization of MPD with TMC.…”

“…During this process, the rate-limiting step is the diffusion of PIP monomer through the aqueous solution from the pores of substrate to the interface. The faster the PIP is supplied, the more severe the interfacial reaction and the greater the degree of polymer cross-linking [22,46,47]. Obviously, the surface properties of substrates play an important role in the diffusion of the PIP monomer during interfacial polymerization process.…”

Identification and optimization of key parameters in preparation of thin film composite membrane for water desalination using multi-step statistical method

“…supported by a porous sublayer increased membrane permeability tremendously, which allowed the application of membranes for many industrial separation processes. Another significant progress in membrane development was made by the formation of an ultra-thin barrier layer on the surface of a porous substrate membrane by in situ IP between di-amine in water phase and acyl chloride in organic phase [8][9][10]. RO and NF are the typical membrane processes available for desalination and wastewater treatment.…”

The averaged potential gradient approach to model the rejection of electrolyte solutions using nanofiltration: Model development and assessment for highly concentrated feed solutions

“…Hence, several factors, inherent to the operating conditions, as well as the choice of the microporous support [5][6][7], are likely to affect the physic-chemical properties of the active layer. Therefore, the issue of characterisation of the polyamide layer has been addressed in several publications [5,[8][9][10][11] in order to improve the understanding of the selectivity and permeability processes through this layer.…”

“…Therefore, the issue of characterisation of the polyamide layer has been addressed in several publications [5,[8][9][10][11] in order to improve the understanding of the selectivity and permeability processes through this layer.…”