Thin-film composite membranes formed by interfacial polymerization with natural material sericin and trimesoyl chloride for nanofiltration

Novel flat-sheet thin-film composite membranes for nanofiltration were fabricated through interfacial polymerization of natural polymer sericin and trimesoyl chloride (TMC) on porous polysulfone support membrane. The preparation parameters including pH of aqueous phase, reaction time, curing tempera...

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Bibliographic Details
Published in:Journal of membrane science 2014-12, Vol.471, p.381-391
Main Authors: Zhou, Choumou, Shi, Yalan, Sun, Changsheng, Yu, Sanchuan, Liu, Meihong, Gao, Congjie
Format: Article
Language:English
Subjects:
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Interfacial polymerization
Membranes
Nanofiltration
Sericin
Surface physical chemistry
Thin-film composite membrane
Trimesoyl chloride (TMC)
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Summary:Novel flat-sheet thin-film composite membranes for nanofiltration were fabricated through interfacial polymerization of natural polymer sericin and trimesoyl chloride (TMC) on porous polysulfone support membrane. The preparation parameters including pH of aqueous phase, reaction time, curing temperature, curing time, sericin content and TMC concentration were investigated. The properties of the resultant membrane were characterized in terms of surface chemical structure, morphological structure, surface zeta potential, pure water flux, molecular weight cut-off (MWCO), pore size and rejections to different solutes including electrolytes and organic anionic dyes. It was found that the obtained sericin–TMC composite membranes had smooth and amphoteric surfaces with an isoelectric point at pH about 4.1. The membrane with a MWCO of 880g/mol had a pure water permeability of 11.9l/m2hbar and exhibited a salt rejection order of MgCl2 (22.5%)
ISSN:0376-7388
1873-3123
DOI:10.1016/j.memsci.2014.08.033