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Evaluation of cationic polymers to control pitch deposition


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McLean, DS and Stack, KR and Richardson, DE (2010) Evaluation of cationic polymers to control pitch deposition. Appita Journal, 63 (3). pp. 199-205. ISSN 1038-6807

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A wide range of cationic polymers of varying chemical structure, charge density and molar mass were evaluated for their effectiveness to control wood resin deposition. The ability of the polymers to attach model wood resin particles to thermo-mechanical pulp fibres and to maintain the wood resin in the colloidal phase was determined at pH 4.75, 6.85 and 8.06. High molar mass poly-DADMAC, copolymer poly-(AM-co-DADMAC) and guar gum were found to be the best fixatives over the pH range investigated. The performance of poly-DADMAC was found to increase with molar mass and charge density. A conceptual model was proposed to explain the behaviour of the polymers based on their ability to stabilise the wood resin colloids, to attach the wood resins to pulp fibres and to affect the wood resin particle size.

Item Type: Article
Keywords: wood resins, pitch deposition, fixatives, cationic polymers
Journal or Publication Title: Appita Journal
Page Range: pp. 199-205
ISSN: 1038-6807
Additional Information: Copyright © 2010 Appita
Date Deposited: 03 Mar 2011 01:17
Last Modified: 03 Mar 2011 01:17
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