
InterfacialpolymerizationinconstrictedzonetoinducedReverse osmosisandnanofiltrationmembranes orientedsynthesis
Tan Zhe、Gao Congjie
Strategic Study of CAE ›› 2014, Vol. 16 ›› Issue (7) : 17-22.
InterfacialpolymerizationinconstrictedzonetoinducedReverse osmosisandnanofiltrationmembranes orientedsynthesis
Tan Zhe、Gao Congjie
Herein, we report a new concept, constricted interfacial polymerization to study the formation of polyamide thin film composite membranes. Delayed diffusion of protected polyfunctional amine reacts with acyl chloride to produce a transition surface structure. Hydrophilic macromolecules and amphiphilic template induced interfacial polymerization reacted in a limited zone, the aggregation state of polymer chains transform from a random state to a regular stateand membrane permeability increases without a loss of salt rejection. Zeolite nanoparticles dispersed in RO composite membrane changed film morphology and water permeability is increased nearly 50% with equivalent salt rejection.
constricted interfacialpolymerization / reverse osmosis / nanofiltration / surface morphology / separation performance
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