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Free volume as a function of strain for (a) cellulose at 300 K, (b) 23Ald6Carb at 300 K, (c) cellulose at 425 K, and (d) 23Ald6Carb at 425 K. A probe size of 0.1 nm was used, and simulations were performed in 3 directions, X, Y, and Z, at each temperature and water content.
