热致相分离法制备聚偏氟乙烯膜的研究

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

作者信息

Lee Jeong Woo, Im Kwang Seop, Nam Sang Yong

机构信息

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

出版信息

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

DOI:10.1166/jnn.2020.18829

PMID:32604572

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.

摘要

在本研究中，采用热致相分离（TIPS）法制备了由聚偏氟乙烯（PVDF）和二氧化硅组成的水处理膜。邻苯二甲酸二辛酯（DOP）和邻苯二甲酸二丁酯（DBP）用作稀释剂。通过观察结晶温度、浊点和形态来研究PVDF/二氧化硅/稀释剂膜的制备条件。扫描电子显微镜（SEM）显示，膜的孔隙率随二氧化硅含量的增加而增加。相图和形态学结果表明，PVDF与二氧化硅重量比为4.5:1的50 wt% PVDF+二氧化硅是制备多孔膜的最佳组成。