Chemistry of Chitosan Aerogels: Three‐Dimensional Pore Control for Tailored Applications

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  • Satoru Takeshita
    Building Energy Materials & Components Laboratory Swiss Federal Laboratories for Materials Science and Technology (Empa) Überlandstrasse 129 CH-8600 Dübendorf Switzerland
  • Shanyu Zhao
    Building Energy Materials & Components Laboratory Swiss Federal Laboratories for Materials Science and Technology (Empa) Überlandstrasse 129 CH-8600 Dübendorf Switzerland
  • Wim J. Malfait
    Building Energy Materials & Components Laboratory Swiss Federal Laboratories for Materials Science and Technology (Empa) Überlandstrasse 129 CH-8600 Dübendorf Switzerland
  • Matthias M. Koebel
    Building Energy Materials & Components Laboratory Swiss Federal Laboratories for Materials Science and Technology (Empa) Überlandstrasse 129 CH-8600 Dübendorf Switzerland

Bibliographic Information

Published
2020-11-30
Resource Type
journal article
Rights Information
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/anie.202003053
Publisher
Wiley

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<jats:title>Abstract</jats:title><jats:p>Chitosan is an abundant biopolymer derived from food waste with attractive properties, particularly its high biocompatibility and easy chemical processability. Here, we review the rapidly expanding literature on chitosan‐based porous materials with a focus on the gelation mechanisms, the three‐dimensional multiscale structural control, and the diverse chemical functionality not accessible by other biopolymers. The properties vary widely: from supercritically dried, mesoporous chitosan aerogels to very light, freeze‐dried macroporous scaffolds. Porous chitosan displays impressive performance at the laboratory scale, but the highly (meso)porous nature amplifies not only the beneficial functionality of chitosan, but also its drawbacks, resulting in serious barriers to industrialization. In order to facilitate technology transfer, we critically discuss the practical feasibility of chitosan aerogels in potential applications compared to conventional and other biopolymer‐based porous or nonporous materials.</jats:p>

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