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Biopolymere Aerogele

Biopolymere aerogels usually consist of polysaccharides, chitosan or cellulose, and can form a natural fiber network with nanometer thicknesses and very low density. They can be easily modified on a chemical or physical level, and can be combined with organic and inorganic materials to form hybrid and composite materials. They themselves are often cheap, non-toxic and biodegradable, resulting in many medical uses like drug delivery and tissue engineering, or applied in the environmental field as ad-/absorbent, pollution sensor or catalyst, for example during wastewater treatment.

Images: cellulose aerogel monoliths (top left), fibers (top right), and beads (bottom left) with an microscopic picture (bottom right).