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Abstract: 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 over a pH range of 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.

To cite this article: McLean, Douglas S; Stack, Karen R and Richardson, Desmond E. Evaluation of Cationic Polymers to Control Pitch Deposition [online]. In: Appita Conference and Exhibition (63rd : 2009 : Melbourne, Vic.). 63rd Appita Annual Conference and Exhibition, Melbourne 19-22 April 2009. Carlton, Vic.: Appita Inc., 2009: 337-345. Availability: <http://search.informit.com.au/documentSummary;dn=736145149026335;res=IELENG> ISBN: 9780975746952. [cited 23 Jul 16].

Personal Author: McLean, Douglas S; Stack, Karen R; Richardson, Desmond E; Source: In: Appita Conference and Exhibition (63rd : 2009 : Melbourne, Vic.). 63rd Appita Annual Conference and Exhibition, Melbourne 19-22 April 2009. Carlton, Vic.: Appita Inc., 2009: 337-345. Document Type: Conference Paper, Research ISBN: 9780975746952 Subject: Papermaking; Wood--Chemistry; Polymers--Analysis; Wood--Testing; Wood-pulp--Refining; Peer Reviewed: Yes Affiliation: (1) Research Fellow, School of Chemistry, University of Tasmania, Hobart, Tasmania
(2) Senior Specialist, Process Chemistry Technical Support and Development Australasia, Norske Skog Paper Mills (Australia) Ltd, Boyer, Tasmania

Database: Engineering Collection