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Comparison of cationic demand between olive wood organosolv pulp and eucaliptus kraft pulp

Paper ID Volume ID Publish Year Pages File Format Full-Text
36422 45132 2006 6 PDF Available
Title
Comparison of cationic demand between olive wood organosolv pulp and eucaliptus kraft pulp
Abstract

The present work has evaluated the variation of cationic demand in function of refining degree for two unbleached cellulosic pulps: a eucalyptus pulp proceeding from a kraft process and an olive wood pulp proceeding from an organosolv process. In the organosolv process, a mixture of ethanolamine, sodium hydroxide and water has been used. For each kind of pulp, fines percentage, weighted medium length of fines, specific surface, carboxyl group's content, water retention value and cationic demand in function of refining degree have been obtained. Cationic demand has been evaluated by means of colloidal titration.Results obtained suggest the use of olive wood organosolv pulp for industrial purposes need to be enhanced. To achieve the same refining degree than eucalyptus pulp, a lot of refining time was needed. It has been observed also that in eucalyptus pulp, polymer fixation by ionic exchange is higher than adsorption. On the other hand in olive pulp, adsorption of cationic polymers prevailed over electrostatic interactions. The great content of fines in olive pulp and its higher values of carboxyl group's density could explain this behaviour.

Keywords
Unbleached cellulosic fibres; Refining process; Refining degree; Specific surface; Cationic demand; Colloidal titration
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Comparison of cationic demand between olive wood organosolv pulp and eucaliptus kraft pulp
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 7, July 2006, Pages 1602–1607
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us