Effect of Ethanol Composition in Water Coagulation Bath on Structure and Performance of Homogeneous-Reinforced Polyvinyl Chloride Hollow Fiber Membranes

Abstract:

Homogeneous-reinforced (HR) polyvinyl chloride (PVC) hollow fiber membranes consisting of coating layer and matrix layer were fabricated via coating process. The mixtures of polymer solutions were uniformly coated on the homogeneous PVC matrix membrane which was prepared by melt-spinning method. The influences of ethanol composition in water coagulation bath on structure and performance of HR membranes were investigated. The results showed that the pure water flux of the HR PVC hollow fiber membranes increased with the increase of ethanol weight fraction in coagulation bath, while the porosity changed slightly. The increase of ethanol weight fraction in coagulation bath brought about the decrease of the protein permeation flux and rejection rate. The tensile strength of HR PVC hollow fiber membranes was about 9.5 MPa, while the elongation at break was higher than 97 %.

• Periodical: Advanced Materials Research (Volume 936)
• Pages: 226-232
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.936.226
• Online since: June 2014
• Authors: Hai Liang Liu, Chang Fa Xiao*, Qing Lin Huang, Zhi Li Fan, Xiao Yu Hu, Wei Shu, Guo Lan Huan
• Keywords: Coagulation Bath, Hollow Fiber Membrane, Homogeneous-Reinforced, Polyvinyl Chloride

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