KOBUNSHI RONBUNSHU
Online ISSN : 1881-5685
Print ISSN : 0386-2186
ISSN-L : 0386-2186
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Preparation and Properties of Bacterial Cellulose Aerogel
Hideaki MAEDAMegumi NAKAJIMAToshiki HAGIWARATakashi SAWAGUCHIShoichiro YANO
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2006 Volume 63 Issue 2 Pages 135-137

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Abstract

Bacterial cellulose (BC) aerogel was obtained by treating BC hydrogel in super critical fluid of ethanol at 6.38 MPa and 243°C. The apparent density of the BC aerogel was 6 mg/cm3 and the porosity was more than 99 vol%. Scanning electron microscopy results showed that micro fibrils with 20-60 nm developed into a highly branched three-dimensional network structure. Compression stress-strain measurement indicated that the stresses of BC hydrogel were 20 kPa at 60% strain and 65 kPa at 80%, while the stresses of BC aerogel were 54 kPa at 60% strain and 140 kPa at 80%. If the BC aerogel was immersed in organic solvents, various kinds of organogels were obtained.

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© 2006 The Society of Polymer Science, Japan
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