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Published online by Cambridge University Press: 03 December 2021
The synthesis of aerogels need not to start with monomers, but also can startwith bundles of polymers of crystalline or amorphous nature. If such polymers are dissolved in a suitable medium down to their single polymeric strands, the solution can be rearranged to form an open, porous, nanostructured network by various methods, such as temperature change, pH inversion orthe addition of a suitable cross-linking salt. In this chapter, we discuss two types of aerogels made from biopolymers: cellulose and alginates. Their chemistry is explained as well as synthesis routes for wet gel preparation.
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