Glycerol/Glyoxal: A New Boron Fixation System for Wood Preservation and Dimensional Stabilization

Toussaint-Dauvergne, E.; Soulounganga, Patrice; Gérardin, Philippe; Loubinoux, B.

doi:10.1515/hf.2000.021

Cited by 30 publications

(5 citation statements)

References 6 publications

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“…When furfuryl alcohol was mixed with borates, boron was released to the leaching water at slower amounts, suggesting the possibility of longer protection of treated wood in service. Dauvergne et al (2000) reported that the mixture of boric acid, glycerol, and glyxocal impregnated Wood pine results in less boron leaching due to formation of complexes. Lloyd et al (1990) reported that the addition of polyols to borate solutions greatly increased the boron stability through borate/polyolchelate complexion.…”

Section: Introduction 1 Uvodmentioning

confidence: 99%

“…Many of the metallic oxides commonly used in water-borne preservative formulations react with the cell wall components by undergoing hydrolytic reduction upon contact with wood carbohydrates. This process, known as fi xation, oxidizes the wood cell wall component and may reduce wood strength (Dauvergne et al, 2000). The relative impact of various water-borne preservative systems is directly related to the preservative chemistry and severity of its fi xation/precipitation reaction (Winandy, 1996).…”

Section: Introduction 1 Uvodmentioning

confidence: 99%

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Some Physical and Mechanical Properties of Borate-Treated Oriental Beech Wood

Simsek

Baysal

2015

Drvna ind.

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Section: Introduction 1 Uvodmentioning

confidence: 99%

Section: Introduction 1 Uvodmentioning

confidence: 99%

Some Physical and Mechanical Properties of Borate-Treated Oriental Beech Wood

Simsek

Baysal

2015

Drvna ind.

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“…Several research groups have successfully worked on fixing boron and other metals in wood (Thevenon et al 1998;Toussaint-Dauvergne et al 2000;Xie et al 1995) but no definitive solutions were found. It is only recently that the fixation of boron with cross-linkable flavonoids has been further investigated (Thevenon et al 2010;Tondi et al 2012a).…”

Section: Introductionmentioning

confidence: 99%

Tannin-boron preservatives for wood buildings: mechanical and fire properties

et al. 2012

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The remarkable biological properties of tanninboron wood preservatives for outdoor applications have been investigated recently (Thevenon et al. in Eur. J. Wood Prod. 67:89, 2009). In the present paper mechanical and fire-proofing attributes of these formulations are determined. Mechanical properties of Scots pine and beech specimens treated with tannin-based formulations were examined in compression and bending strength tests and surface hardness was determined. The tannin-hexamine formulations reticulated into the wood structure improve the strength of the treated specimens. The treated samples which underwent compression, bending, hardness and gluing tests showed improvements of on average 20%.Fire tests have been monitored regarding short and long flame exposure time. Short tests such as ignition, flame and ember time have allowed the ignition of the fire to be simulated, while the weight loss tests have provided a good overview of the behavior of the specimens during prolonged fire. A positive effect on fire-resistance is shown when wood is treated with tannin formulations. The fire-proofing properties of the resin have been upgraded adding boron and phosphorus. The ember time of the pieces treated using this method can be reduced by up to ten times.

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“…The treatment of wood with boron-containing inorganic (Cockcroft and Levy 1973;Pizzi and Baecker 1996;Toussaint-Dauvergne et al 2000) or organic chemicals (Howell 1988;Lloyd and Deane-Wray 1995;Yalinkilic et al 1998a) belong to the remedies. The treatment of wood with boron-containing inorganic (Cockcroft and Levy 1973;Pizzi and Baecker 1996;Toussaint-Dauvergne et al 2000) or organic chemicals (Howell 1988;Lloyd and Deane-Wray 1995;Yalinkilic et al 1998a) belong to the remedies.…”

Section: Introductionmentioning

confidence: 99%

Chemical improvement of surfaces. Part 1: Novel functional modification of wood with covalently bound organoboron compounds

Namyslo

Kaufmann

2009

HFSG

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A novel type of chemical modification of wood was developed and applied to functionalise wood permanently with organoboron compounds. The covalent attachment of metalloid substituents via a benzotriazolylactivated benzoic acid to wood hydroxy groups was in focus. Thus, standard modification procedures in wood chemistry -such as the acetylation -are improved by avoiding either the loss of half the reagent in the case of acid anhydrides or the release of corrosive hydrochloric acid in the case of carboxylic acid chlorides. The introduced boron moiety could be a contribution to solve a long-lasting problem in the field of wood protection: chemical fixation of an organoboron compound by means of a well-defined covalent bond. Accordingly, the hitherto insufficient long-term availability of conventionally spread boron compounds as wood protecting agents caused by leaching can now be avoided. The investigation was also extended to arylsilyl compounds, as a second type of organometal substances, which potentially allow for subsequent chemical modifications by ipso-substitution. The presented wood modification reactions yielded weight percent gain values from 14% to 31% on beech wood, spruce wood, and pine sapwood meal (approximately 500 mm in diameter) or pine sapwood veneer chips. The modified meals and chips were analysed by IR spectroscopy.

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Glycerol/Glyoxal: A New Boron Fixation System for Wood Preservation and Dimensional Stabilization

Abstract: Anti-Swelling-Efficiency (ASE) was determined by measuring the increase in volume of treated and untreated pine blocks. Blocks were placed in a climatic chamber WTB BINDER typ KBF 115 at a temperature of 25°C and an humidity of 95 % R.H. for approxiHolzforschung / Vol. 54 / 2000 / No. 2

Cited by 30 publications

References 6 publications

Some Physical and Mechanical Properties of Borate-Treated Oriental Beech Wood

Some Physical and Mechanical Properties of Borate-Treated Oriental Beech Wood

Tannin-boron preservatives for wood buildings: mechanical and fire properties

Chemical improvement of surfaces. Part 1: Novel functional modification of wood with covalently bound organoboron compounds

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