Preparation of robust RO membranes for water desalination by interfacial copolymerization of bis[(triethoxysilyl)propyl]amine and bis(triethoxysilyl)ethane

Preparation of polysilsesquioxane reverse osmosis membranes for water desalination from tris[(ethoxysilyl)alkyl]amines by sol–gel process and interfacial polymerization

“…The TDEMSPA-and BT-BT3, BTESPA copolymerized with BTESE in 1:3 ratio; data from literature. [12] d Polysulfone support membrane.…”

“…[11] In our previous work, we accomplished the copolymerization of nitrogen-containing precursor bis [3-(triethoxysilyl)propyl]amine (BTESPA) with BTESE to generate membranes with approximately 10-fold higher water permeability than membranes prepared from the homopolymerization of BTESE and BTESPA. [12] In the last two decades, the sol-gel process had been the focus of continuous development for the synthesis of porous materials, [13][14][15] and in our previous research, we used the sol-gel process for the preparation of PSQ-RO membranes. The sol-gel process is a multistep process that includes sol particle formation, coating of the sol particles on a support substrate, and calcination of the coated substrate to convert the sol film into gel.…”

“…[ 11 ] In our previous work, we accomplished the copolymerization of nitrogen‐containing precursor bis[3‐(triethoxysilyl)propyl]amine (BTESPA) with BTESE to generate membranes with approximately 10‐fold higher water permeability than membranes prepared from the homopolymerization of BTESE and BTESPA. [ 12 ]…”

“…Recently, we reported an interfacial polymerization for the preparation of PSQ‐RO membranes. [ 12 ] Compared with the sol–gel process, the interfacial polymerization is simple and efficient. Membranes prepared by the interfacial polymerization exhibit RO performance close to that of membranes prepared by the sol–gel process.…”