Effect of Kiering on the Crystallinity of Cotton Cellulose
1955
Nelson, Mary L. | Segal, Leon | Ziifle, Hilda M.
Although kier boiling is a common commercial treatment applied to cotton, its effect on the crystallinity of cotton cellulose apparently has not been investigated. In the present work, the effect on the crystalline-amorphous ratio of a laboratory kiering and of alcohol extraction and boiling in water under pressure has been studied. Acid-hydrolysis crystallinity determinations and moisture-sorption measurements on three varieties of cotton have indicated (1) that standard purification treatments can increase the crystallinity of raw cotton; (2) that the extent of crystallization varies with the in dividual sample; and (3) that the crystallinity values reported in the literature for puri fied cottons are probably higher than those for native cottons because of the changes induced by the purification treatments.
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