Novel Mixed Matrix Membranes Based on Poly(vinylidene fluoride): Development, Characterization, Modeling

Author:

Kuzminova Anna12ORCID,Dmitrenko Mariia12ORCID,Zolotarev Andrey12,Markelov Denis12ORCID,Komolkin Andrei1ORCID,Dubovenko Roman1,Selyutin Artem1ORCID,Wu Jiangjiexing34ORCID,Su Rongxin345,Penkova Anastasia12ORCID

Affiliation:

1. St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia

2. Sirius University, 1 Olympic Ave, Township Sirius, 354340 Sochi, Russia

3. Zhejiang Institute of Tianjin University, Ningbo 315201, China

4. School of Marine Science and Technology, Tianjin University, Tianjin 300072, China

5. State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Abstract

Membrane technology is an actively developing area of modern societies; with the help of high-performance membranes, it is possible to separate various mixtures for many industrial tasks. The objective of this study was to develop novel effective membranes based on poly(vinylidene fluoride) (PVDF) by its modification with various nanoparticles (TiO2, Ag-TiO2, GO-TiO2, and MWCNT/TiO2). Two types of membranes have been developed: dense membranes for pervaporation and porous membranes for ultrafiltration. The optimal content of nanoparticles in the PVDF matrix was selected: 0.3 wt% for porous membranes and 0.5 wt% for dense ones. The structural and physicochemical properties of the developed membranes were studied using FTIR spectroscopy, thermogravimetric analysis, scanning electron and atomic force microscopies, and measuring of contact angles. In addition, the molecular dynamics simulation of PVDF and the TiO2 system was applied. The transport properties and cleaning ability under ultraviolet irradiation of porous membranes were studied by ultrafiltration of a bovine serum albumin solution. The transport properties of dense membranes were tested in pervaporation separation of a water/isopropanol mixture. It was found that membranes with the optimal transport properties are as follows: the dense membrane modified with 0.5 wt% GO-TiO2 and the porous membrane modified with 0.3 wt% MWCNT/TiO2 and Ag-TiO2.

Funder

RFBR

Publisher

MDPI AG

Subject

Polymers and Plastics,General Chemistry

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