Published: 1941 Received: -Available on J-STAGE: November 27, 2008Accepted: September 17, 1941
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Correction information
Date of correction: November 27, 2008Reason for correction: -Correction: ABSTRACTDetails: Wrong : In a previous communication it has been Shown that the cellulosic material when digested by a bisulphite solution or 1% sulphuric acid, the cellulose degrated and β-cellulose increased, pentosan and uronic acid were strictly related to the oxidation of the cellulose. The suggestion was made that during digestion with acid there is actual oxidation of the cellulose. This suggestion has been followed up in the present work which has involved a study of the cooking products of the various samples of cellulosic materials such as rayon pulp of red pine, purified cotton cellulose and bleached rice straw pulp. The cookings were performed with water, calcium bisulphite solution containing 3.0% total and 1.0% combined sulphur dioxide, and 1% sulphuric acid. The cookings were done under the same conditions in each cases, temperature 140°C and 1 hour. The following results were represented in two ways, in Table I, III, and V are given total analyses of the cooking residues, and in Table II, IV and VI are given the residual contents calculated from the original samples. Table I. Rayon pulp of red pine wood. Table II. Residual percentages from original rayon pulp. Table III. Purified cotton cellulose. Table IV. Residual percentages from original cotton cellulose.
Date of correction: November 27, 2008Reason for correction: -Correction: PDF FILEDetails: -