Polyimide thin film composite (TFC) membranes via interfacial polymerization on hydrolyzed polyacrylonitrile support for solvent resistant nanofiltration

Abstract

High performance solvent resistant nanofiltration membranes are fabricated via interfacial polymerization between m-phenylenediamine and 1,2,4,5-benzenetetra acylchloride on hydrolyzed polyacrylonitrile supports followed by chemical imidization.

In Situ Interfacial Polymerization: A Technique for Rapid Formation of Highly Loaded Carbon Nanotube‐Polymer Composites

“…The rapid polymerization reaction could be scaled to a continuous process, as has been demonstrated in the case of thin film composite (TFC) membranes for desalination technologies, wherein thin polymer films are produced at liquid-liquid interfaces. [18,40] Additionally, the process is viable for any stepgrowth reaction and can be adapted to various polymer types such as polyesters, [41] polyureas, [42] or polyimides, [43] opening new ranges of accessible properties and potential applications. The CNT-aramid composites described here feature improved mechanical properties and high thermal stability, making them suitable candidates for applications such as electromagnetic shielding.…”

A review: the effect of the microporous support during interfacial polymerization on the morphology and performances of a thin film composite membrane for liquid purification

“…In order to make PAN casting membrane applied in TFC membrane, some investigations modifying PAN membrane by plasma graing have been reported. Yang et al 30 reported a new PI TFC membrane for solvent resistant nanoltration prepared on hydrophilic PAN ultraltration membrane via the IP process and subsequent imidization process. Klaysom et al 31 prepared PAN porous support membrane via phase inversion method and the PAN membrane hydrolyzed with NaOH before performing the interfacial polymerization.…”

“…Chemical modication has been widely utilized in improving the surface properties of polymers, including chemical graing, polymerization, and plasma treatment. 24,30,[58][59][60][61][62][63][64][65] Among these methods, plasma treatment technique is the most effective method to gra organic monomers onto the membrane surface. It has a lot of advantages including fast production, simplicity and economy, as well as minimum effect on the bulk properties of materials.…”

Polyethyleneimine‐Mediated Polyamide Composite Membrane with High Perm‐Selectivity for Forward Osmosis

“…First, the commercial PAN substrate was immersed into deionized (DI) water overnight to remove the protective agents. Then, the pretreated PAN substrate was soaked into 2 mol L −1 sodium hydroxide solution at 65 °C for 1 h. [ 26,27 ] The hydrolyzed PAN substrate was rinsed with DI water several times until the pH of the soaking solution became neutral, and the resultant membrane was denoted as HPAN. To obtain PEI‐modified PAN substrate (PEI‐HPAN), the HPAN was soaked into PEI solutions with different concentrations (0.5, 1, 1.5, and 2 g L −1 , respectively) for 30 min at room temperature, and then rinsed with DI water.…”