Polymeric hydrogels and supercritical fluids: The mechanism of hydrogel foaming

A novel method, the hydrogel foaming, is used in this work for the production of porous, polymer-based materials by processing with supercritical carbon dioxide (CO 2). This method is applied to crystalline hydrophilic polymers that, practically, exhibit no phase transition (melting or glass transit...

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Veröffentlicht in:	Polymer (Guilford) 2011-06, Vol.52 (13), p.2819-2826
Hauptverfasser:	Tsioptsias, C., Paraskevopoulos, M.K., Christofilos, D., Andrieux, P., Panayiotou, C.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences calorimetry Carbon dioxide cellulose Chitosan Crosslinking crystal structure Exact sciences and technology Foaming freeze drying Gel gelatin Gelatins glass transition glutaraldehyde hydrocolloids Hydrogels hydrogen bonding hydrophilic polymers Mathematical models melting Natural polymers new methods Physicochemistry of polymers Proteins Raman spectroscopy rheology Sorption Starch and polysaccharides Supercritical fluids temperature thermal degradation vapors water solubility X-ray diffraction
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