Supercritically‐Dried Alginate Aerogels Retain the Fibrillar Structure of the Hydrogels

Macromolecular Symposia - Tập 273 Số 1 - Trang 80-84 - 2008
Mike Robitzer1, Laurent David2, Cyrille Rochas3, F. Di Renzo1, F. Quignard1
1Institut Charles Gerhardt Montpellier, UMR 5253 CNRS-UM2-ENSCM-UM1, Matériaux Avancés pour la Catalyse et la Sante, ENSCM, 8 rue Ecole Normale, 34296, Montpellier Cedex 5, France.
2Institut de Chimie de Lyon FR 3023, Laboratoire des Matériaux Polymères et Biomatériaux, UMR 5223 IMP-ICL, Université de Lyon, Université Lyon1, Bat. ISTIL, 15 bd Latarjet 69622 Villeurbanne Cedex, France
3Laboratoire de Spectrométrie Physique, CNRS UMR 5588, Université J. Fourier, BP 87, 38402 St. Martin d'Hères, France

Tóm tắt

AbstractSummary: SAXS patterns of a Ca‐alginate hydrogel and of the derived alcogel and aerogel have been recorded. All patterns correspond to disordered arrays of rod‐like fibrils. The calculated size of the fibrils of the aerogel, 8 nm, is in good agreement with the results of scanning electron microscopy and N2 adsorption. The results suggest that ethanol exchange and CO2 supercritical drying do not affect the spatial organisation of the secondary structures of the gel and that characterisations of the aerogel can provide information on the organisation of the parent hydrogel.

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Thông tin xuất bản

Macromolecular Symposia

Tập 273 Số 1

80-84

Thông tin tác giả