Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7022027 | Journal of Membrane Science | 2014 | 41 Pages |
Abstract
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 880 g/mol had a pure water permeability of 11.9 l/m2 h bar and exhibited a salt rejection order of MgCl2 (22.5%)
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
Choumou Zhou, Yalan Shi, Changsheng Sun, Sanchuan Yu, Meihong Liu, Congjie Gao,