Journal
JOURNAL OF MATERIALS RESEARCH
Volume 36, Issue 24, Pages 4986-5001Publisher
SPRINGER HEIDELBERG
DOI: 10.1557/s43578-021-00432-x
Keywords
Polymer blend; Membrane; Composite; Fullerene derivatives; Pervaporation dehydration; Sustainability
Categories
Funding
- Russian Science Foundation [20-79-10064]
- Russian Science Foundation [20-79-10064] Funding Source: Russian Science Foundation
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The study focused on developing novel pervaporation membranes for dehydration, utilizing a blend of hydroxyethyl cellulose (HEC)/polyvinyl alcohol (PVA) and fullerene derivatives. The optimized cross-linked membrane showed promising transport properties in the pervaporation dehydration of isopropanol, with high water content in the permeate.
The rapid implementation of membrane processes in the industry requires novel membrane materials. One of the promising ways to obtain a membrane material with improved properties is to combine the advantages of a polymer and a modifier (in particular, carbon nanoparticles). In the present work, novel pervaporation membranes based on hydroxyethyl cellulose (HEC)/polyvinyl alcohol (PVA) blend and HEC/PVA/fullerene derivative (polyhydroxylated fullerene, carboxyfullerene, and fullerene derivative with l-arginine) composites were developed for dehydration. The membrane composition and the cross-linking with maleic acid were optimized. The membranes were studied by Fourier-transform infrared spectroscopy, scanning electron and atomic force microscopies, thermogravimetric analysis, contact angle and swelling measurements. Transport properties of the membranes were studied in the pervaporation dehydration of isopropanol. The cross-linked dense HEC/PVA(30/70 wt%)/carboxyfullerene (5 wt%) membrane had the optimal transport properties in pervaporation dehydration of isopropanol (12-100 wt% water) at 22 degrees C: permeation flux of 24-1633 g/(m(2) h), 99.99-98.3 wt% water in permeate.
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