Investigation of Formation for Poly(vinylidene fluoride) Membrane Using Thermally Induced Phase Separation

Jeong Woo Lee; Kwang Seop Im; Sang Yong Nam

doi:10.1166/jnn.2020.18829

Investigation of Formation for Poly(vinylidene fluoride) Membrane Using Thermally Induced Phase Separation

J Nanosci Nanotechnol. 2020 Nov 1;20(11):7140-7144. doi: 10.1166/jnn.2020.18829.

Authors

Jeong Woo Lee¹, Kwang Seop Im¹, Sang Yong Nam¹

Affiliation

¹ Department of Material Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University, Jinju, 52828, Korea.

PMID: 32604572
DOI: 10.1166/jnn.2020.18829

Abstract

In this study, thermally induced phase separation (TIPS) was used to fabricate a water treatment membrane composed of poly(vinylidene fluoride) (PVDF) and silica. Dioctyl phthalate (DOP) and dibutyl phthalate (DBP) were used as diluents. Crystallization temperature, cloud point, and morphology were observed to investigate the conditions of PVDF/silica/diluent membrane preparation. SEM revealed that the porosity of the membranes was increased with an increase in silica content. Phase diagram and morphology results revealed that 50 wt% PVDF+silica with a PVDF:silica weight ratio of 4.5:1 is the best composition for manufacturing a porous membrane.

Publication types

Research Support, Non-U.S. Gov't