Apart from these products, as a result of cellulose thermo-oxidation reactions, highly unstable free radicals are formed which generate reactions (in avalanche) leading to the cellulosic macromolecular chain depolymerisation. The presence of water and acids as a result of cellulose oxidation leads to the initiation of acid hydrolysis. The process for producing this type of reaction is the dissociation of carboxylic acids in water, after which the process produces rapidly the growing concentration of H
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