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Evaluation of cationic polymers to control pitch deposition
journal contribution
posted on 2023-05-17, 04:46 authored by McLean, DS, Karen Stack, Richardson, DEA 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.
History
Publication title
Appita JournalVolume
63Pagination
199-205ISSN
1038-6807Department/School
School of Natural SciencesPublisher
AppitaPlace of publication
Carlton Clock Tower, Ste 47 255 Drummond St, Carlton, Australia, Victoria,3053Repository Status
- Restricted