AbstractThe preparation and properties of films and fibers of highly disordered cellulose are described; the basis of the preparation is the regeneration of cellulose from cellulose derivatives in non‐aqueous media. These cellulose are at least 97 hydrogen‐bond disordered (as measured by the infrared‐deuteration technique), give x‐ray diagrams showing poor three‐dimensional order, and are practically completely accessible to swelling agents such as water and formic acid. The crystallization of these disordered celluloses is described. The effects on native cellulose of ball milling, mercerization, amine treatment, swelling in acid and salt solutions, and swelling in solutions of potassium hydroxide in non‐aqueous solvents are described with reference to changes in fine structure as measured by the infrared‐deuterat
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