Enhancement of solvent uptake in porous PVDF nanofibers derived by a water-mediated electrospinning technique

Gajula Prasad; Jun-Wei Liang; Wei Zhao; Yingbang Yao; Tao Tao; Bo Liang; Sheng-Guo Lu

Journal of Materiomics (Mar 2021)

Enhancement of solvent uptake in porous PVDF nanofibers derived by a water-mediated electrospinning technique

Gajula Prasad,
Jun-Wei Liang,
Wei Zhao,
Yingbang Yao,
Tao Tao,
Bo Liang,
Sheng-Guo Lu

Affiliations

Gajula Prasad: Guangdong Provincial Research Center on Smart Materials and Energy Conversion Devices, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory on the Functional Soft Condensed Matter, Guangzhou, 510006, China; School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China
Jun-Wei Liang: Guangdong Provincial Research Center on Smart Materials and Energy Conversion Devices, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory on the Functional Soft Condensed Matter, Guangzhou, 510006, China; School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China
Wei Zhao: Guangdong Provincial Research Center on Smart Materials and Energy Conversion Devices, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory on the Functional Soft Condensed Matter, Guangzhou, 510006, China; School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China
Yingbang Yao: Guangdong Provincial Research Center on Smart Materials and Energy Conversion Devices, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory on the Functional Soft Condensed Matter, Guangzhou, 510006, China; School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China; Dongguan South China Design Innovation Institute, Building D-1, University Innovation City Area, Songshan Lake, Dongguan, 523808, China
Tao Tao: Guangdong Provincial Research Center on Smart Materials and Energy Conversion Devices, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory on the Functional Soft Condensed Matter, Guangzhou, 510006, China; School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China; Dongguan South China Design Innovation Institute, Building D-1, University Innovation City Area, Songshan Lake, Dongguan, 523808, China
Bo Liang: Guangdong Provincial Research Center on Smart Materials and Energy Conversion Devices, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory on the Functional Soft Condensed Matter, Guangzhou, 510006, China; School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China; Dongguan South China Design Innovation Institute, Building D-1, University Innovation City Area, Songshan Lake, Dongguan, 523808, China
Sheng-Guo Lu: Guangdong Provincial Research Center on Smart Materials and Energy Conversion Devices, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory on the Functional Soft Condensed Matter, Guangzhou, 510006, China; School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China; Dongguan South China Design Innovation Institute, Building D-1, University Innovation City Area, Songshan Lake, Dongguan, 523808, China; Corresponding author. School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China.

Journal volume & issue: Vol. 7, no. 2
pp. 244 – 253

Abstract

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The effect of a N,N-dimethylformamide (DMF)/acetone solvent system (3:7, 4:6, 5:5, 6:4, 7:3) and spinning medium (air and water) on the membrane morphology and the structure-property relationship were investigated. A facile method was optimized to generate a porous, polymer-fiber membrane via the combinative effect of electrospinning and thermally inducing phase separation of the DMF/acetone (4:6) solvent system in a water medium. The attenuated total reflection (ATR) - Fourier transform infrared (FTIR) results showed an increased β-phase compared to the pristine poly(vinylidene fluoride) (PVDF). The XRD and DSC results further confirmed that the co-existing α- and β-phases in the pristine PVDF were converted into a unique β-phase in the electrospun membranes. In addition, the solvent uptake percentage of the DMF/acetone (4:6) solvent system in a water medium (540) is much greater than that in an air medium (320), and over two times better than that of commercial polyethylene (PE) membranes (190). Similarly, the discharge capacity of the PVDF membrane separator prepared with the DMF/acetone (4:6) solvent system in a water medium is higher than that of the air medium. This enhancement of solvent uptake might be due to the interconnected porous morphology present in the water medium.

Published in Journal of Materiomics

ISSN: 2352-8478 (Print); 2352-8486 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.sciencedirect.com/journal/journal-of-materiomics

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