The mechanism of reaction of partial benzylation of cotton fibers has been followed through a systematic study of such parameters as crystallinity, crystallite size, and crystal lite orientation. Benzylation was found to be accompanied by a general loss in crystal linity of the fibers, shifting of the amorphous maximum towards the small angle region, and a possible change in the shape of crystallite. Unit cell dimensions for benzyl cel lulose with a degree of substitution less than 1 have been determined from a study of partially benzylated flax. An explanation is given for the persistence of (101) peak in amorphous benzyl cellulose.
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