Kinetic study of the hydrolysis of cellulose acetate in the pH range of 2–10

1966 ◽  
Vol 10 (5) ◽  
pp. 825-832 ◽  
Author(s):  
Kenneth D. Vos ◽  
Floyd O. Burris ◽  
Robert L. Riley
Keyword(s):  
Kinetic Study ◽  
Cellulose Acetate ◽  
Hydrolysis Of Cellulose ◽  
Ph Range ◽  
Hydrolysis Of

HYDROLYSIS OF CELLULOSE ACETATE SULPHATE IN ACETONE

1954 ◽  
Vol 32 (9) ◽  
pp. 815-822 ◽  
Author(s):  
Karl Keirstead ◽  
John Myers
Keyword(s):  
Acetic Acid ◽  
Cellulose Acetate ◽  
Sulphuric Acid ◽  
Potentiometric Titration ◽  
Titration Method ◽  
Acetate Ester ◽  
Hydrolysis Of Cellulose ◽  
Potentiometric Titration Method ◽  
Hydrolysis Of

When cellulose acetate sulphate is dissolved in acetone the hydrolysis of the sulphate ester is rapid compared with that of the acetate ester. In 70% acetone the relative rates are reversed. Hydrolysis of the sulphate ester in acetone is greatly affected by the temperature. At 25 °C. or greater the hydrolysis is complete after 24 hr. A potentiometric titration method has been developed for the estimation of sulphuric acid in the presence of smaller amounts of acetic acid.

THE SAP OF THE BIRCH TREE, BETULA PAPYRIFERA MARSH.: I. THE AMYLASE SYSTEM

1942 ◽  
Vol 20b (6) ◽  
pp. 114-120 ◽  
Author(s):  
E. Bois ◽  
W. O. Chubb
Keyword(s):  
Cellulose Acetate ◽  
Betula Papyrifera ◽  
Optimum Conditions ◽  
Maximum Production ◽  
Birch Tree ◽  
Optimum Ph ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of

The amylase system of birch sap consists of a cellobiogenic amylase and most probably a glucogenic amylase. The optimum conditions of pH and temperature are pH 5. 5 at 4 °C. to 6.3 at 60 °C. The maximum production of cellobiose occurred at a temperature of 50 °C. at the optimum pH for this temperature. The optimum conditions for the production of glucose were pH 5.5 and a temperature of 50 °C.It is felt that these new facts throw some additional light on the constitution of starch, and that possibly birch sap might serve as a source of cellobiose, which has heretofore only been prepared commercially by hydrolysis of cellulose acetate.

scholarly journals Kinetic Study on the Acid-Catalyzed Hydrolysis of Cellulose to Levulinic Acid

2007 ◽  
Vol 46 (6) ◽  
pp. 1696-1708 ◽  
Author(s):  
B. Girisuta ◽  
L. P. B. M. Janssen ◽  
H. J. Heeres
Keyword(s):  
Kinetic Study ◽  
Levulinic Acid ◽  
Hydrolysis Of Cellulose ◽  
Acid Catalyzed ◽  
Hydrolysis Of

Re-esterification during the Hydrolysis of Cellulose Acetate

1952 ◽  
Vol 74 (16) ◽  
pp. 4105-4107 ◽  
Author(s):  
Carl J. Malm ◽  
Leo J. Tanghe ◽  
Barbara C. Laird ◽  
Glenn D. Smith
Keyword(s):  
Cellulose Acetate ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of
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