Effect of Difference of Dielectric Constants Between Polyvinylidene Fluoride and Diluents on the Morphology of Polyvinylidene Fluoride Memranes Prepared by Thermally Induced Phase Separation

Chem. J. Chinese Universities

• 研究论文 • Previous Articles Next Articles

Effect of Difference of Dielectric Constants Between Polyvinylidene Fluoride and Diluents on the Morphology of Polyvinylidene Fluoride Memranes Prepared by Thermally Induced Phase Separation

YANG Jian^1,2, ZHAO Wen-Ming¹, WANG Xiao-Lin¹*

1. Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;
2. Tianjin Institute of Medical Equipment, Tianjin 300161, China

Received:2007-06-06 Revised:1900-01-01 Online:2007-12-10 Published:2007-12-10
Contact: WANG Xiao-Lin

Abstract

Abstract: The effect of difference of dielectric constants between polyvinylidene fluoride(PVDF) and diluents on morphology of PVDF membranes prepared by thermally induced phase separation(TIPS) was studied. 1,4-Butyrrolactone, dimethyl phthalate, methyl salicylate, glycerol triacetate, carbitol acetate and di-n-butyl phthalate were selected as the diluents, respectively. The results show that the difference in dielectric constants between PVDF and diluents have a certain relationship with the morphology of membrane. The dielectric constant is one of important parameters of interaction among molecules. When the dielectric constant of PVDF is larger than that of the diluent, the attractive interaction among PVDF molecules lead to the aggregation of PVDF and crystallization. The incompact particle structure formed. When PVDF and diluents have a similar dielectric constant, attraction and repulsion exist in the equilibrium. The channel-like structure is formed under the condition of quenching. If the dielectric constant of PVDF is smaller than that of diluent, PVDF molecules crystallize difficultly in the diluent due to the repulsive interaction.

Key words: Dielectric constant, Polyvinylidene fluoride, Diluent, Thermally induced phase separation, Microporous membrane

CLC Number:

O631.1+3

TrendMD:

YANG Jian^1,2, ZHAO Wen-Ming¹, WANG Xiao-Lin¹*. Effect of Difference of Dielectric Constants Between Polyvinylidene Fluoride and Diluents on the Morphology of Polyvinylidene Fluoride Memranes Prepared by Thermally Induced Phase Separation[J]. Chem. J. Chinese Universities, doi: .

[1]	HU Bo, ZHU Haochen. Dielectric Constant of Confined Water in a Bilayer Graphene Oxide Nanosystem [J]. Chem. J. Chinese Universities, 2022, 43(2): 20210614.
[2]	LI Weihui, LI Haobo, ZENG Cheng, LIANG Haoyue, CHEN Jiajun, LI Junyong, LI Huiqiao. Hot-pressed PVDF-based Difunctional Protective Layer for Lithium Metal Anodes [J]. Chem. J. Chinese Universities, 2022, 43(2): 20210629.
[3]	ZHU Deshuai, ZHAO Jianying, YANG Zhenghui, GUO Haiquan, GAO Lianxun. Graphene Oxide/Polyimide Composites with High Energy Storage Density Based on Multilayer Structure [J]. Chem. J. Chinese Universities, 2021, 42(8): 2694.
[4]	GAO Yifei, XIAO Changfa, JI Dawei, HUANG Yangzheng. Preparation of PVDF Hollow Fiber Membranes via Melt Spinning-stretching Method and Its Oil-water Separation Performance [J]. Chem. J. Chinese Universities, 2021, 42(6): 2065.
[5]	LI Honghong,GENG Keying,TIAN Fuyue,GU Fang,WANG Haijun. Regulation of Phase State of Dipolar Janus Particles and Its Application ^† [J]. Chem. J. Chinese Universities, 2020, 41(5): 1042.
[6]	CHENG Jifeng,JIANG Tuanhui,ZHAN Xiaomei,QI Yating,YANG Yuanyuan,KANG Xun,QIN Shuhao. Preparation and Properties of Superhydrophilic Polyvinylidene Fluoride Hollow Fiber Membrane ^† [J]. Chem. J. Chinese Universities, 2020, 41(2): 358.
[7]	XIONG Zhengrong,DONG Li,LIU Xiangdong,YANG Yuming. Preparation and Properties Characterization of PDA/PVDF UV Shielding Composite Membranes [J]. Chem. J. Chinese Universities, 2019, 40(4): 849.
[8]	ZHENG Qiuguang,LIU Hailiang,XIAO Changfa. Preparation and Performance of Poly(vinylidene chloride-co-vinyl chloride) Porous Membranes via Thermally Induced Phase Separation^† [J]. Chem. J. Chinese Universities, 2019, 40(4): 841.
[9]	LIU Zihao,XIAO Han,YAO Yuan,WANG Ting,WU Liguang,ZHANG Xueyang. Fabrication of PVDF Hybrid Blending Membrane via Microemulsion Polymerization Coupling with Blending Method ^† [J]. Chem. J. Chinese Universities, 2019, 40(10): 2248.
[10]	LIU Qi,GUO Guibao,AN Shengli,LIU Jinyan. Preparation and Properties of Tetramethyl Ammonium Hydroxide Modified Polyvinylidene Fluoride with Styrene Sulfonated Membranes^† [J]. Chem. J. Chinese Universities, 2018, 39(9): 2062.
[11]	YANG Zewen,ZHANG Yanyan,FU Feiya,LIU Xiangdong. Preparation and Properties of a Bio-based Unsaturated Polyester Resin Glue and Its Cotton Fabric-reinforced Composite^† [J]. Chem. J. Chinese Universities, 2018, 39(5): 1084.
[12]	LIU Hui, ZHAO Jianying, YAO Haibo, GUO Haiquan, GAO Lianxun. Preparation and Properties of Graphene/polyimide Composites with High Dielectric Constant^† [J]. Chem. J. Chinese Universities, 2017, 38(7): 1264.
[13]	ZHANG Hanyu, LUO Wu, LIU Zhenchao, LI Xiaobai, Guan Shaowei, LIU Baijun. Preparation of the Biphenyl-containing Polyarylethers with Highly Fluorinated Contents [J]. Chem. J. Chinese Universities, 2017, 38(7): 1107.
[14]	WANG Wei, XU Jiali, LIN Yuanfei, LI Xueyu, MENG Lingpu, LI Liangbin. Effect of Hot Stretching on the Structure of Polypropylene Microporous Membranes with in situ Small Angle X-Ray Scattering^† [J]. Chem. J. Chinese Universities, 2017, 38(11): 2128.
[15]	LIU Xuewu,CHEN Shuhua,ZHAN Shiping. Experimental Study and Theoretical Phase Diagram Calculation for Polystyrene Membranes Prepared by Supercritical CO₂-induced Phase Inversion^† [J]. Chem. J. Chinese Universities, 2016, 37(8): 1573.

Effect of Difference of Dielectric Constants Between Polyvinylidene Fluoride and Diluents on the Morphology of Polyvinylidene Fluoride Memranes Prepared by Thermally Induced Phase Separation

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments