Key words: Arctic brown algae, cellulose, supercritical drying, freeze drying, structure, porosity
The article presents a study of the influence of three methods of drying cellulose of
Arctic brown algae (vacuum drying, freeze drying and supercritical drying) on the
physicochemical properties of the target product. Freeze-died and supercritically dried
algal celluloses have lower thermal stability due predominance of the metastable Iб
phase, degree of crystallinity of 48—69% and fibrillar surface. Freeze-dried celluloses,
and especially supercritically dried, have a larger specific surface area (up to 186 m2/g), a
developed mesoporous structure with an average pore diameter of 13,81—14,81 nm.
doi:10.1134/S1990793121080194