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- Title
Enzymatic and Acid Hydrolysis of Cotton Cellulose After Slack and Tension Mercerization.
- Authors
Buschle-Diller, Gisela; Zeronian, S. Haig
- Abstract
The effect of enzymatic hydrolysis and acid hydrolysis on slack and tension mercerized cotton yarn has been investigated and compared to the effect on the nonmercerized starting sample. Splitting of the glycosidic bond of cellulose occurs with both types of hydrolysis. When yarn tensile strength was used as a measure of degradation, enzymatic hydrolysis had the largest effect on the cellulose if the fiber had been slack mercerized, while acid hydrolysis proceeded faster when the material was not mercerized. The intrinsic viscosity of the product did not change markedly after the enzyme treatment, irrespective of whether the fiber had been mercerized or not. In contrast, in the case of acid hydrolysis, the intrinsic viscosity of the product decreased in the order of slack mercerized > tension mercerized > nonmercerized when a pretreatment had been given. The weight loss during the acid treatment was minimal compared to that during enzymatic hydrolysis. Morphological changes such as cracks and peeling due to the enzyme treatment were found to vary depending on the starting sample. Photodegradation of the enzyme- treated products was found to be slightly accelerated only after tension mercerization combined with long incubation times and decelerated to a small extent after slack mercerization. No significant additional surface damage could be detected after exposure to ultraviolet light.
- Subjects
HYDROLYSIS; CELLULOSE; MERCERIZATION; COTTON textiles; ULTRAVIOLET radiation; TEXTILE industry; WEIGHT loss
- Publication
Textile Chemist & Colorist, 1994, Vol 26, Issue 4, p17
- ISSN
0040-490X
- Publication type
Article