- Title
- Effects of ellagic acid and derivatives thereof on water repellency and dimensional stability
- Creator
- Przewloka, Simon; Shearer, B. J.
- Date
- 2008
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/68142
- Identifier
- vital:725
- Identifier
- ISSN:0128-1283
- Abstract
- Derivatives of the insoluble polyphenolic ellagic acid and water soluble tetraguanidinium, tetracholine, tetrakis-benzyltrimethylammonium and tetrakis-tetramethylammonium ellagates and 2,3,4,2',3',4'-hexamethoxy-6,6'- diisocyanato-diphenyl, were prepared. The effects of these compounds upon water repellency and dimensional stability when impregnated into timber were examined. Water soluble ellagates improved water repellent effectiveness up to 32%. Ellagic acid and 2,3,4,2',3',4'-hexamethoxy-6,6'-diisocyanato-diphenyl increased initial swelling rates due to their solvent carriers. All trial compounds provided the timber wafers with additional dimensional stability predominantly by non-bonded, non-leachable bulking. Generally a reduction in the extent but not the rate of moisture uptake was noted for the compounds investigated.; C1
- Publisher
- Forest Research Institute Malaysia
- Relation
- Journal of Tropical Forest Science Vol. 20, no. 2 (2008), p. 132-138
- Rights
- Copyright Forest Research Institute Malaysia
- Rights
- This metadata is freely available under a CCO license
- Subject
- 0705 Forestry Sciences; Dimensional stability; Ellagic acid; Pinus radiata; Water repellency
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