Polyol-modified biopolymer membranes of sodium alginate and chitosan for CO2/N2 and CO2/O2 separation: Linking structure and gas transport performance

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F25%3A00014126" target="_blank" >RIV/46747885:24410/25:00014126 - isvavai.cz</a>

Alternative codes found

RIV/46747885:24620/25:00014126

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S2666821125002467" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2666821125002467</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceja.2025.100950" target="_blank" >10.1016/j.ceja.2025.100950</a>

Result language

angličtina

Original language name

Polyol-modified biopolymer membranes of sodium alginate and chitosan for CO2/N2 and CO2/O2 separation: Linking structure and gas transport performance

Original language description

This work presents a comparative assessment of two biopolymers, focusing on the relationship between structural modifications and their impact on gas separation performance. Sodium alginate and chitosan membranes were developed and thoroughly characterized after modification with varying amounts (0–60 wt.%) of CO2-philic polyol additives, glycerol and sorbitol, for the selective separation of carbon dioxide (CO2) from light gases such as nitrogen (N2) and oxygen (O2). The membranes were prepared via solvent evaporation using polymer concentrations ranging from 0.5 to 1.5 wt.%. Their structural, thermal, and mechanical properties were analysed using SEM, FTIR, DSC, and tensile testing. Key gas transport parameters: permeability, diffusivity, solubility, and ideal selectivity, were systematically evaluated. The results demonstrate that the polyol content has a strong influence on membrane performance, revealing a clear correlation between structural features and gas separation efficiency. The highest CO2/N2 selectivity (6.3) and CO2/O2 selectivity (4.3) were obtained for the alginate membrane containing 60 wt.% sorbitol, with a corresponding CO2 permeability of 38.6 Barrer. Although the overall separation performance remains moderate, the findings provide valuable insights into the role of polyol modifiers in biopolymer-based membranes, contributing to a deeper understanding of gas transport in bio-derived systems.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20701 - Environmental and geological engineering, geotechnics

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Chemical Engineering Journal Advances>

ISSN

2666-8211

e-ISSN

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Volume of the periodical

24

Issue of the periodical within the volume

NOV

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

17

Pages from-to

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UT code for WoS article

001617818900001

EID of the result in the Scopus database

2-s2.0-105021328317