Influence of the Coagulation-Bath Temperature on Membrane Formation Mechanism and Properties of PVDF/TA-ATP Hybrid Membrane

Yue Rong Shi; Gui Fang Zhang; Xing Tian Liu; Xue Tao Tian; Yi Ping Zhao; Li Chen

doi:10.4028/www.scientific.net/AMM.713-715.2723

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 713-715Influence of the Coagulation-Bath Temperature on...

Influence of the Coagulation-Bath Temperature on Membrane Formation Mechanism and Properties of PVDF/TA-ATP Hybrid Membrane

Abstract:

In this study, poly (vinylidene fluoride) (PVDF) hybrid membranes were prepared from polymeric blend of PVDF/tannic acid (TA)-Attapulgite (ATP)/PEG system via phase inversion induced by immersion precipitation in water coagulation bath. The membrane formation mechanism of PVDF/TA-ATP/PEG casting solutions in water bath thermodynamics at different temperatures and the process of membrane formation were investigated via cloud point determination and ultrasonic time-domain reflectometry (UTDR). The structures and properties of the membrane were characterized by scanning electron microscopy (SEM), and water permeation experiment, respectively. It was found that the rate of precipitation controlled by the Coagulation-Bath thermodynamics. With the coagulation temperature increasing, the gelation line was moved to non-solvent axis and the pure water flux were decreased.

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Periodical:

Applied Mechanics and Materials (Volumes 713-715)

Pages:

2723-2726

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.713-715.2723

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Online since:

January 2015

Authors:

Yue Rong Shi, Gui Fang Zhang, Xing Tian Liu, Xue Tao Tian, Yi Ping Zhao*, Li Chen

Keywords:

Hybrid Membrane, Phase Diagrams, PVDF, Ultrasonic Time-Domain Reflectometry

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