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Electron beam crosslinking as a strategy for the synthesis of pectin/PVA aerogels: effect of concentration and radiation dose
Citation Link: https://doi.org/10.15480/882.18625
Publikationstyp
Journal Article
Date Issued
2026-09-10
Sprache
English
TORE-DOI
Volume
27
Issue
18
Article Number
8047
Citation
International Journal of Molecular Sciences 27 (18): 8047 (2026)
Publisher DOI
Scopus ID
Publisher
Multidisciplinary Digital Publishing Institute (MDPI)
Radiation techniques represent an innovative and alternative method for polymer gelation or crosslinking; their application in aerogel research has not been extensively investigated. The irradiation of polymer solutions, either with or without a crosslinking agent, may result in stable polymer gels with a highly developed mesoporous structure. In this study, the effect of the pectin polysaccharide concentration, the presence of PVA, and the dose of ionizing radiation (27-58 kGy) were systematically investigated, particularly with respect to the structural, textural, and mechanical properties. The pectin/PVA and PVA were crosslinked in aqueous solution via ionizing radiation using an electron beam. The results demonstrated that the radiation crosslinking of a hydrophilic synthetic polymer in the presence of natural polysaccharides, such as pectin, is an effective strategy for engineering porous materials with a controlled structure, namely aerogels, of good stability, and favorable functional properties. The resulting composite aerogels were characterized by a BET-determined specific surface area of 200-241 m²/g and an estimated porosity of over 91%, compared with values of 28-46 m²/g, 0.22 g/cm³ and approximately 81.5% for aerogels produced using the freeze-method.
Subjects
polysaccharide
mesoporous
pectin
poly(vinyl alcohol)
aerogels
supercritical CO₂
ionizing radiation
radiation crosslinking
shrinkage control
biopolymer
DDC Class
660: Chemistry; Chemical Engineering
541.3: Physical Chemistry
Publication version
publishedVersion
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Name
ijms-27-08047-v2.pdf
Type
Main Article
Size
3.31 MB
Format
Adobe PDF