High performance thin film composite polyamide reverse osmosis membrane prepared via m-phenylenediamine and 2,2′-benzidinedisulfonic acid

Preparation of nanofiltration membranes and relating surface chemistry with potential and topography: Application in separation and desalting of amino acids

“…The rejection ratio of sulphate to chloride salts (for MgSO 4 /NaCl, Na 2 SO 4 /MgCl 2 , Na 2 SO 4 /NaCl and MgSO 4 /MgCl 2 ) is gradually decreasing from Membrane I to Membrane IV (Table 5) indicating the effect of membrane surface potential to be highest in Membrane I. The rejection of MgCl 2 is found to be higher than NaCl because of the steric effect as the Stokes radius of Mg 2+ is significantly larger than Na + [43]. The separation performance of different TFC NF membranes available from the literature is compared in Table 6 with the performance of the membranes prepared in this work.…”

Thin film composite membranes comprising of polyamide and polydopamine for dehydration of ethylene glycol by pervaporation

“…Polyamide-based thin film composite (TFC) membranes prepared by interfacial polymerization are generally used for reverse osmosis [1,2] and nanofiltration [3,4]. A great deal of research has been done recently to develop TFC membranes for pervaporation applications, especially for the dehydration of organic solvents.…”

PEGylation and incorporation of triazine ring into thin film composite reverse osmosis membranes for enhancement of anti-organic and anti-biofouling properties

“…As far as structure of diamine is considered, mixture of MPD + m-phenylenediamine-5-sulfonic acid or mixture of MPD + m-phenylenediamine 2,2′-benzidinedisulfonic acid was reacted with TMC for the preparation of TFC membranes [5,18,19]. The resultant TFC membranes showed lowering trend in NaCl rejection after certain concentration of m-phenylenediamine-5-sulfonic acid or 2,2′-benzidinedisulfonic acid comonomer in the aqueous bath for IFP.…”