Bacterial cellulose/multiwalled carbon nanotube (MWCNT) composite cryogels were prepared via sol-gel chemistry using epichlorohydrin as a crosslinker. Their morphology and pore characteristics were examined under various conditions. The bacterial cellulose/MWCNT composite cryogels had a macroporous structure that contained mesopores and micropores due to the MWCNTs that were homogeneously incorporated in the macroporous network structure.
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http://dx.doi.org/10.1166/jnn.2011.3182 | DOI Listing |
Biopolymers
January 2025
School of Pharmacy and Bioengineering, Keele University, Keele, UK.
Cryogels were fabricated by combining polyvinyl alcohol (PVA) and chitosan of varying molecular weights (Mw). In this study, the effects of chitosan Mw, types of boron-containing molecules on network formation, and boron release rate in resulted cryogels were investigated. The PVA/chitosan blend maintained a constant 4.
View Article and Find Full Text PDFAdv Sci (Weinh)
December 2024
Freie Universität Berlin, Institut für Chemie und Biochemie - Anorganische Chemie, Fabeckstr. 34/36, 14195, Berlin, Germany.
Herein hyperbranched polyethyleneimine (hPEI) cryogels are reported for the selective and reversible adsorption of elemental chlorine. The cryogels are prepared in an aqueous solution by crosslinking with glutaraldehyde at subzero temperatures. The final macroporous composites bearing ammonium chloride groups are obtained after freeze-drying.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
College of Chemistry and Molecular Sciences, Hubei Engineering Center of Natural Polymer-Based Medical Materials, Wuhan University, Wuhan 430072, China. Electronic address:
The purification of polysaccharides is an essential preliminary step in determining their chemical structure, although it presents significant challenges. In this research, a macro-porous monolith of quaternary chitosan cryogel was synthesized for the purification of a neutral polysaccharide from Boletus auripes. A homogeneous neutral polysaccharide (BAP-1a1) with a weight-average molecular weight of 4.
View Article and Find Full Text PDFCarbohydr Polym
February 2025
Laboratory for Cellulose & Wood Materials, Empa - Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 DÜbendorf, Switzerland; Department of Health Science and Technology, ETH Zürich, Schmelzbergstrasse 9, 8092 Zürich, Switzerland. Electronic address:
Global concerns about food and energy waste call for new sustainable solutions. Phase changing materials (PCM) are promising thermal storage and management materials which have potential to mitigate food waste, yet they often suffer from leakage and non-shape stability. Here, a green shape-stabilized polyethylene glycol 300 (PEG) nanocellulose-based composite was developed using readily available and cost-effective side streams from the brewery industry.
View Article and Find Full Text PDFPharmaceutics
October 2024
Department of Pharmaceutical Technology and Biopharmaceutics, Faculty of Pharmacy, Jagiellonian University Medical College, 9 Medyczna Street, 30-688 Kraków, Poland.
: Hydrogels produced using the freeze-thaw method have demonstrated significant potential for wound management applications. However, their production requires precise control over critical factors including freezing temperature and the choice of matrix-forming excipients, for which no consensus on the optimal conditions currently exists. This study aimed to address this gap by evaluating the effects of the above-mentioned variables on cryogel performance.
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