A1 Journal article (refereed), original research

Development and investigation of novel polyphenylene isophthalamide pervaporation membranes modified with various fullerene derivatives


LUT Authors / Editors

Publication Details
Authors: Dmitrenko M., Penkova A., Kuzminova A., Atta R., Zolotarev A., Mazur A., Vezo O., Lähderanta Erkki, Markelov D., Ermakov S.
Publisher: Elsevier
Publication year: 2019
Language: English
Related Journal or Series Information: Separation and Purification Technology
Journal name in source: Separation and Purification Technology
Volume number: 226
Start page: 241
End page: 251
Number of pages: 11
ISSN: 1383-5866
eISSN: 1873-3794
JUFO-Level of this publication: 2
Open Access: Not an Open Access publication

Abstract

Novel membranes based on polyphenylene isophthalamide (PA) modified by fullerene derivatives (5 wt% with respect to PA weight) (polyhydroxylated fullerene (fullerenol), carboxyfullerene and fullerene derivative with L-arginine) were developed. The presence of PA/fullerene and PA/fullerene derivative composites and distribution of carbon nanoparticles after ultrasonic treatment in polymer solution was investigated by dynamic light scattering. The influence of carbon modifier on structural characteristics of PA was examined by nuclear magnetic resonance, small-angle X-ray scattering, scanning electron microscopy, atomic force microscopy, sorption experiments, density investigation and contact angle measurements of water. The transport properties were examined by pervaporation separation of industrially important methanol/toluene mixtures in two regimes (1. a series of experiments of different concentrations including azeotropic mixture and 2. only azeotropic mixture) to assess the effect of residual solvent in the PA membranes on their parameters. It was found that all membranes containing fullerene derivatives possessed improved permeation flux compared to pristine PA membrane. The optimal transport characteristics for the separation of methanol/toluene mixtures containing 10–72 wt% methanol were noticed for PA membrane modified by 5 wt% fullerenol due to the highest permeation fluxes (0.084–0.214 kg/(m2h)) and high level of selectivity (95.9 wt% methanol content in the permeate).


Last updated on 2020-20-03 at 10:03