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Modification of Pinus sylvestris L. wood with quat- and amino-silicones of different chain lengths

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Published/Copyright: November 19, 2012
Holzforschung
From the journal Holzforschung Volume 67 Issue 4

Abstract

The water-related properties of Scots pine (Pinus sylvestris L.) sapwood have been improved by treatment with quat- and amino-silicones of different chain lengths. Standard leaching test and hot water Soxhlet extraction (6 h) showed that the amino-silicones are better fixed in wood than the quat-silicones. A water dipping test (24 h) revealed that both quat- and amino-silicones made wood hydrophobic; however, amino-silicones were more effective in reducing water uptake. The long-chained silicones of both types resulted in higher water repellent effectiveness compared with the respective short-chained silicones. As demonstrated by assessing cell wall bulking, scanning electron microscopy (SEM), and SEM energy-dispersive X-ray analysis, silicones with short chains penetrated the cell wall better than those with long chains regardless of the silicone type. The maximum antishrink efficiency of approximately 60% was attained with short-chained amino-silicone at approximately 39% weight percent gain. The short-chained silicones show more potential to enhance the water-related properties of solid wood and for the development of silicone-based industrial wood modification processes.

Keywords: amino-silicone; antishrink efficiency; bulking; quat-silicone; water repellent
Corresponding author: Carsten Mai, Wood Biology and Wood Products, Burckhardt Institute, Georg-August-University Göttingen, Büsgenweg 4, 37077 Göttingen, Germany, Phone: +49-551-39 19807, Fax: +49-551-39 96 46

The authors acknowledge the contribution of Momentive GmbH (Leverkusen, Germany) for supplying the chemicals and technical information.

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Received: 2012-6-16
Accepted: 2012-10-16
Published Online: 2012-11-19
Published in Print: 2013-05-01

©2013 by Walter de Gruyter Berlin Boston

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  2. Masthead
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  5. Fragmentation mechanism of the phenylcoumaran-type lignin model compound by ToF-SIMS
  6. Enzymatic hydrolysis of loblolly pine: effects of cellulose crystallinity and delignification
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  8. The adsorption and dispersing mechanisms of sodium lignosulfonate on Al2O3 particles in aqueous solution
  9. Moisture-dependent orthotropic tension-compression asymmetry of wood
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  15. Effect of short-chain silicones bearing different functional groups on the resistance of pine (Pinus sylvestris L.) and beech (Fagus sylvatica L.) against decay fungi
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  17. Cloning and characterization of a 2,3-oxidosqualene cyclase from Eleutherococcus trifoliatus
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  19. Meetings
  20. Meetings
https://doi.org/10.1515/hf-2012-0103
Keywords for this article
amino-silicone; antishrink efficiency; bulking; quat-silicone; water repellent

Articles in the same Issue

  1. Masthead
  2. Masthead
  3. Original Articles
  4. A new lignan glycoside and phenolics from the branch wood of Pinus banksiana Lambert
  5. Fragmentation mechanism of the phenylcoumaran-type lignin model compound by ToF-SIMS
  6. Enzymatic hydrolysis of loblolly pine: effects of cellulose crystallinity and delignification
  7. Aggregation and adsorption behaviors of carboxymethylated lignin (CML) in aqueous solution
  8. The adsorption and dispersing mechanisms of sodium lignosulfonate on Al2O3 particles in aqueous solution
  9. Moisture-dependent orthotropic tension-compression asymmetry of wood
  10. Time-domain NMR study of the drying of hemicellulose extracted aspen (Populus tremuloides Michx.)
  11. Substitution of phenol in phenol-formaldehyde (PF) resins by wood tar for plywood adhesives
  12. Modification of Pinus sylvestris L. wood with quat- and amino-silicones of different chain lengths
  13. Reducing copper leaching from treated wood by sol-gel derived TiO2 and SiO2 depositions
  14. Measuring the thermal properties of green wood by the transient plane source (TPS) technique
  15. Effect of short-chain silicones bearing different functional groups on the resistance of pine (Pinus sylvestris L.) and beech (Fagus sylvatica L.) against decay fungi
  16. Antimicrobial surfaces of quaternized poly[(2-dimethyl amino)ethyl methacrylate] grafted on wood via ARGET ATRP
  17. Cloning and characterization of a 2,3-oxidosqualene cyclase from Eleutherococcus trifoliatus
  18. Phylogenetic analysis of the genus Fusarium and their antifungal activity against wood-decay and sapstain fungi
  19. Meetings
  20. Meetings
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