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Effect of increased levels of dissolved and colloidal substances from Pinus radiata on newsprint paper strength
Citation
Stack, K and Zhang, J and Hodgson, M and Lewis, T and Richardson, D, Effect of increased levels of dissolved and colloidal substances from Pinus radiata on newsprint paper strength, Appita Journal, 65, (4) pp. 331-336. ISSN 1038-6807 (2012) [Refereed Article]
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Copyright Statement
Copyright 2012 The Authors
Official URL: http://www.appita.com.au/what-we-do/extensions/app...
Abstract
The effect of increased levels of wood resins, salts and dissolved organics on newsprint tensile strength was evaluated. Significantly more Pinus radiata wood resins are adsorbed onto the fibre surface compared to reported
results for Norwegian spruce. Differences in chemical composition may explain this. Tensile strength was found to decrease significantly and reach a limiting value as the level of wood resins in the handsheets increased to
approximately 5 mg/g acetone extractives. High levels of calcium ions were found to cause precipitation of the wood resins onto the fibre surface and also reduced tensile strength. Increasing amounts of soluble polysaccharides, such
as galactoglucomannans, were found to stabilize the wood resins in solution and reduce the amount adsorbed onto the fibre surface, resulting in increased tensile strength. The addition of polymeric fixatives was found to reduce the
negative effect of the higher levels of extractives attached to the fibres.
Item Details
Item Type: | Refereed Article |
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Keywords: | wood resins, tensile strength, Pinus radiata extractives, recycling process water, dissolved organics, fixatives, calcium salts |
Research Division: | Chemical Sciences |
Research Group: | Physical chemistry |
Research Field: | Colloid and surface chemistry |
Objective Division: | Manufacturing |
Objective Group: | Wood, wood products and paper |
Objective Field: | Paper products and pulp |
UTAS Author: | Stack, K (Dr Karen Stack) |
UTAS Author: | Zhang, J (Miss Jingyi Zhang) |
UTAS Author: | Hodgson, M (Dr Michael Hodgson) |
UTAS Author: | Lewis, T (Associate Professor Trevor Lewis) |
ID Code: | 79786 |
Year Published: | 2012 |
Web of Science® Times Cited: | 4 |
Deposited By: | Chemistry |
Deposited On: | 2012-10-03 |
Last Modified: | 2017-10-25 |
Downloads: | 277 View Download Statistics |
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