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Synthesis of new hydrogels based on xanthan and cellulose allomorphs

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Ciolacu, D.; Cazacu, M.

Editorial: CELLULOSE CHEMISTRY AND TECHNOLOGY, 45 (3-4), p.163-169, 2011.

Rezumat:

The large availability of cellulose in nature and the low cost of cellulose derivatives make the cellulosebased
hydrogels particularly attractive. New hydrogels were obtained by chemical cross-linking of different
cellulose allomorphs (cellulose I, cellulose II and cellulose III) and xanthan with epichlorohydrin. The
preparation conditions of the transparent cellulose hydrogels were established. The equilibrium swelling
capacity of the obtained hydrogels was investigated at 37 °C, in distilled water. The obtained values were
discussed in correlation with the dehydration heats estimated from the differential scanning calorimetry
(DSC) curves. The morphology of hydrogels was studied by optical microscopy. The present work provides
a simple and fast method for preparing eco-friendly hydrogels.

Cuvinte cheie: hydrogels, cellulose allomorphs, xanthan, dissolution, swelling, DSC, optical microscopy