Issue 47, 2018

One-step fabrication of robust and anti-oil-fouling aliphatic polyketone composite membranes for sustainable and efficient filtration of oil-in-water emulsions

Abstract

Oil-fouling resistance of membranes is crucial for enabling efficient oil/water separation. Starting with an aliphatic polyketone (PK) polymer with intrinsic intermediate hydrophilicity and good membrane formation ability, a robust PK composite membrane with the ideal abrasion-resistant and chemical-resistant super-anti-oil-fouling property was effortlessly prepared by a simple one-step non-solvent induced phase separation (NIPS) process, with the polyvinyl alcohol (PVA) additive introduced as a pore-former and more importantly a hydrophilicity enhancer to perfect the underwater oil-repellency and a nylon mesh as a reinforcing support. Molecular dynamics (MD) simulations revealed that the intermolecular and intramolecular hydrogen bonds are responsible for the stable confinement of PVA within the PK matrix, leading to the all hydrophilic PK–PVA mixed surface chemistry. Fouling-resistant membrane filtration of oil-in-water emulsions was readily achieved in the cross-flow mode with a high flux up to 420 L m−2 h−1 at 0.1 bar and a high flux recovery of 93–96% being maintained, even for the highly adhesive and highly fouling soybean oil emulsions (up to 100 000 ppm). The prepared membrane with excellent comprehensive performance and high cost-effectiveness is very promising in sustainable treatment of difficult oil-in-water emulsions.

Graphical abstract: One-step fabrication of robust and anti-oil-fouling aliphatic polyketone composite membranes for sustainable and efficient filtration of oil-in-water emulsions

Supplementary files

Article information

Article type
Paper
Submitted
19 Oct 2018
Accepted
12 Nov 2018
First published
13 Nov 2018

J. Mater. Chem. A, 2018,6, 24641-24650

One-step fabrication of robust and anti-oil-fouling aliphatic polyketone composite membranes for sustainable and efficient filtration of oil-in-water emulsions

L. Zhang, L. Cheng, H. Wu, T. Yoshioka and H. Matsuyama, J. Mater. Chem. A, 2018, 6, 24641 DOI: 10.1039/C8TA10071C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements