Effect of coagulation bath composition on themembrane-forming and properties of PVDF/TA-ATP hybrid membrane
Year: 2015
Type: article
Abstract: In this work,attapulgite modified by tannic acid( TA),PVDF and porogen polyethylene glycol( PEG) were mixed and PVDF / TA-ATP flat sheet hybrid membrane was prepared by the method of phase inversion. The thermal properties and morphology of the hybrid membrane was characterized by differential scanning calorimetry and scanning electron microscopy,respectively. The effect of coagulation bath composition on the hybrid membrane in membrane-forming progress and then the pure water flux were studied by the method of thermodynamic phase diagram and ultrasonic reflection. The results showed that by adding more ethanol and DMF to the coagulation bath,more non-solvent was needed for phase separation,and the membrane-forming speed slowed significantly,the pore structure changed from finger-like pores with density skin into sponge-like pores without skin,the pure water flux increased.
Author: Huidong Zhang
Institution: Tiangong University
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,258
OpenAlex ID: W2363264405