Open AccessNovel membranes based on cellulose for gas separation and green method for their preparing
Author(s) -
В. Б. Филистович,
Татьяна Александровна Савицкая,
I.M. Kimlenko,
Д. Д. Гриншпан,
С. Е. Макаревич,
Vladimir V. Tepliakov,
Д. А. Сырцова
Publication year - 2019
Publication title -
žurnal belorusskogo gosudarstvennogo universiteta. himiâ
Language(s) - English
Resource type - Journals
eISSN - 2617-3980
pISSN - 2520-257X
DOI - 10.33581/2520-257x-2019-1-66-77
Subject(s) - membrane , cellulose , gas separation , viscose , cellophane , chemical engineering , materials science , selectivity , polymer , membrane technology , pervaporation , chromatography , polymer chemistry , chemistry , organic chemistry , composite material , catalysis , engineering , permeation , biochemistry
A «green» method of obtaining gas separation composite membranes from cellulose solutions and its mixtures with chitosan in orthophosphoric acid is proposed for industrial use, and differs from the viscose method of producing cellophane and other known methods for producing cellulose gas separation membranes without gaseous emissions and wastewater. It is shown that new composite cellulose membranes on a viscose fabric substrate are characterized by high productivity and selectivity for O2/ N2 pairs, comparable to the values obtained for known membranes made of synthetic polymers, as well as increased mechanical strength. The developed composite membranes demonstrate an inverse selectivity for the CH4/CO2 pair, which is not typical for gas separation membranes described in the literature with cellulose-based selective layers.