Issue 65, 2016

Investigation into glutaraldehyde crosslinked chitosan/cardo-poly-etherketone composite membrane for pervaporation separation of methanol and dimethyl carbonate mixtures

Abstract

Separations of methanol and dimethyl carbonate mixtures were performed by a pervaporation process using chitosan-based composite membrane GA–STA–CS/PEK-C, which was prepared using silicotungstic acid hydrate (STA) filled chitosan (CS) as active layer and cardo-polyetherketone (PEK-C) as substrate, then crosslinked with glutaraldehyde (GA). To optimize the pervaporation performance of active layer of the composite membrane, the homogeneous membranes GA–STA–CS were also prepared and investigated. The membranes were characterized by Fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscope (SEM) and contact angle meter methods. Sorption experiments indicated that the glutaraldehyde content, feed methanol concentration and temperature greatly affected swelling degree, solubility selectivity and diffusion selectivity of the homogeneous membranes GA–STA–CS. The pervaporation results showed that the GA–STA–CS had the highest permselectivity when glutaraldehyde content was 0.3 wt%. Feed methanol concentration significantly affected the pervaporation performance of the membranes. The prepared GA–STA–CS/PEK-C had excellent separation performance with a flux of 910.2 g m−2 h−1 and separation factor of 120.3 at 10 wt% feed methanol concentration at 30 °C.

Graphical abstract: Investigation into glutaraldehyde crosslinked chitosan/cardo-poly-etherketone composite membrane for pervaporation separation of methanol and dimethyl carbonate mixtures

Article information

Article type
Paper
Submitted
27 Apr 2016
Accepted
17 Jun 2016
First published
17 Jun 2016

RSC Adv., 2016,6, 60765-60772

Investigation into glutaraldehyde crosslinked chitosan/cardo-poly-etherketone composite membrane for pervaporation separation of methanol and dimethyl carbonate mixtures

J. H. Chen, X. F. Dong and Y. S. He, RSC Adv., 2016, 6, 60765 DOI: 10.1039/C6RA10854G

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