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Facile Fabrication of Superwetting PVDF Membrane for Highly Efficient Oil/Water Separation.

ABSTRACT: A novel superhydrophilic and underwater superoleophobic modified PVDF membrane for oil/water separation was fabricated through a modified blending approach. Pluronic F127 and amphiphilic copolymer P (MMA-AA) were directly blended with PVDF as a hydrophilic polymeric additive to prepare membranes via phase inversion induced by immersion precipitation. Then, the as-prepared microfiltration membranes were annealed at 160 °C for a short time and quenched to room temperature. The resultant membranes exhibited contact angles of hexane larger than 150° no matter whether in an acidic or basic environment. For 1, 2-dichloroethane droplets, the membrane surface showed a change from superoleophilic to superoleophobic under water with aqueous solutions with pH values from 2 to 13. This as-prepared membrane has good mechanical strength and can then be applied for oil and water mixture separation.

SUBMITTER: Yang J

PROVIDER: S-EPMC9865060 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature

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Facile Fabrication of Superwetting PVDF Membrane for Highly Efficient Oil/Water Separation.

Yang Jinzhu J Sun Wei W Ju Junping J Tan Yeqiang Y Yuan Hua H

Polymers 20230109 2

A novel superhydrophilic and underwater superoleophobic modified PVDF membrane for oil/water separation was fabricated through a modified blending approach. Pluronic F127 and amphiphilic copolymer P (MMA-AA) were directly blended with PVDF as a hydrophilic polymeric additive to prepare membranes via phase inversion induced by immersion precipitation. Then, the as-prepared microfiltration membranes were annealed at 160 °C for a short time and quenched to room temperature. The resultant membranes ...[more]

PMID: 36679208

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