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http://dx.doi.org/10.14579/MEMBRANE_JOURNAL.2017.27.4.350

Effect of Coagulation Heat Capacity on the PVDF Membrane via TIPS Method  

Lee, Jeong Woo (Department of materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University)
Nam, Sang Yong (Department of materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University)
Publication Information
Membrane Journal / v.27, no.4, 2017 , pp. 350-357 More about this Journal
Abstract
In this study, we used TIPS (thermally induced phase separation) for the application of water treatment membrane, and observed the change in morphology of separation membrane due to the change of solidification temperature and heat capacity. For manufactured membrane, PVDF and silica with excellent mechanical properties and chemical resistance were used, and DOP (dioctyl phthalate), DBP (dibutyl phthalate) were used as the diluent. Using the SEM (scanning electron microscope), the morphology of each different coagulation solutions of heat capacity change was observed. As the heat capacity increased, the crystallization rate of PVDF was decreased and showed large pore. In contrast, It also confirmed that the smaller heat capacity, the faster the crystallization rate and make smaller pores.
Keywords
TIPS; PVDF; silica; heat capacity;
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Times Cited By KSCI : 5  (Citation Analysis)
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