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Distribution of α-Cellulose, Hemicelluloses and Acid Insoluble Lignin During Total Chlorine Free Bleaching of AS/AQ Wheat Straw Pulp
Citation
Yaqoob, N and Stack, K and Rehman, IU and Cheema, KJ and Hameed, SR and Mateen, B, Distribution of α-Cellulose, Hemicelluloses and Acid Insoluble Lignin During Total Chlorine Free Bleaching of AS/AQ Wheat Straw Pulp, Asian Journal of Chemistry, 23, (7) pp. 3050-3054. ISSN 0970-7077 (2011) [Refereed Article]
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Copyright 2011 Asian Journal of Chemistry
Official URL: http://www.asianjournalofchemistry.co.in/Home.aspx
Abstract
The effect of each individual bleaching stage on the percentage composition of a-cellulose, acid insoluble lignin and hemicelluloses in multistage total chlorine free bleaching of alkaline sulphate/anthraquinone (AS/AQ) wheat straw pulp was studied by using standard TAPPI and GC methods, respectively. With AOOxP bleaching, > 85 % of pulp fibers were calculated to be composed of true cellulosic fibers, while acid insoluble lignin (%) contents decreased to as low as < 2.0 % as compared to an unbleached sample where pulp fiber constitutes
76.6 % a-cellulose and 7.6 % acid insoluble lignin. A statistical correlation was established and it was found that hemicelluloses are also responsible for ageing of pulp. Burst and tensile index were also found to be effected by changes in hemicelluloses (%) in pulp structure.
Item Details
Item Type: | Refereed Article |
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Keywords: | a-cellulose, hemicellulose,acid insoluble lignin, gas chromatography, brightness reversion |
Research Division: | Chemical Sciences |
Research Group: | Organic chemistry |
Research Field: | Natural products and bioactive compounds |
Objective Division: | Manufacturing |
Objective Group: | Wood, wood products and paper |
Objective Field: | Paper products and pulp |
UTAS Author: | Stack, K (Dr Karen Stack) |
ID Code: | 76637 |
Year Published: | 2011 |
Web of Science® Times Cited: | 1 |
Deposited By: | Chemistry |
Deposited On: | 2012-03-08 |
Last Modified: | 2012-08-08 |
Downloads: | 2 View Download Statistics |
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