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On the road to biopolymer aerogels - dealing with the solvent
Citation Link: https://doi.org/10.15480/882.1514
Publikationstyp
Journal Article
Date Issued
2015-12-21
Sprache
English
Institut
TORE-DOI
Journal
Volume
1
Issue
2
Start Page
291
End Page
313
Citation
Gels vol. 1(2015), 2 : pp. 291-313
Publisher DOI
Scopus ID
Publisher
Multidisciplinary Digital Publishing Institute
Aerogels are three-dimensional ultra-light porous structures whose characteristics make them exciting candidates for research, development and commercialization leading to a broad scope of applications ranging from insulation and catalysis to regenerative medicine and pharmaceuticals. Biopolymers have recently entered the aerogel foray. In order to fully realize their potential, progressive strategies dealing with production times and costs reduction must be put in place to facilitate the scale up of aerogel production from lab to
commercial scale. The necessity of studying solvent/matrix interactions during solvent exchange and supercritical CO2 drying is presented in this study using calcium alginate as a model system. Four frameworks, namely (a) solvent selection methodology based on
solvent/polymer interaction; (b) concentration gradient influence during solvent exchange; (c) solvent exchange kinetics based on pseudo second order model; and (d) minimum solvent
concentration requirements for supercritical CO2 drying, are suggested that could help assess the role of the solvent in biopolymer aerogel production.
commercial scale. The necessity of studying solvent/matrix interactions during solvent exchange and supercritical CO2 drying is presented in this study using calcium alginate as a model system. Four frameworks, namely (a) solvent selection methodology based on
solvent/polymer interaction; (b) concentration gradient influence during solvent exchange; (c) solvent exchange kinetics based on pseudo second order model; and (d) minimum solvent
concentration requirements for supercritical CO2 drying, are suggested that could help assess the role of the solvent in biopolymer aerogel production.
Subjects
hydrogel
aerogel
alginate
DDC Class
620: Ingenieurwissenschaften
Publication version
publishedVersion
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