Hydrophobisation and densification of wood by different chemical treatments
-
Sylvie Bach
Abstract
Samples of Pinus sylvestris were treated with different reagents bearing isocyanate, carboxylic anhydride or oxirane functions to induce reaction with the OH groups of the various components of wood. Conditions were optimised to achieve maximum grafting. When the reagents also carried a polymerisable function, a monomer (styrene or methyl methacrylate) was incorporated into the wood morphology after the derivatisation reaction. Subsequent radical polymerisation produced chemical incorporation of some of the resulting macromolecules. The properties of the doubly modified samples were assessed using a wide variety of tests. Both the hydrophobic character and the density increased considerably, suggesting improved lifetime and extended domains of application.
References
Banks, W.B. (1990) Derivatization of wood. In: Cellulose Sources and Exploitation. Eds. Kennedy, J.F., Philips, G.O., Williams, P.A. Ellis Hardwood, New York. pp. 221–234.Suche in Google Scholar
Belgacem, M.N., Gandini, A. (1999) Inverse gas chromatography as a tool for the characterization of some surface properties of fibres and powders. In: Interfacial Phenomena in Chromatography, Ed. Pefferkorn, E. Marcel Dekker, New York. pp. 41–124.Suche in Google Scholar
Gandini, A., Aurenty, P., Lanet, V., Tessadro, A. (1997) An apparatus for the characterization of the static and dynamic wettability of complex interfaces. Rev. Sci. Instrum.68:1801–1810.Suche in Google Scholar
Gandini, A., Botaro, V., Zeno, E., Bach, S. (2001) Activation of solid polymer surfaces with bifunctional reagents. Polym. Int.50:7–9.10.1002/1097-0126(200101)50:1<7::AID-PI641>3.0.CO;2-7Suche in Google Scholar
Goodell, B., Nicholas, D.D., Schultz, T.P. (Eds.) (2003) Wood Deterioration and Preservation: Advances in Our Changing World. American Chemical Society Symposium Series 845. ACS, Washington, DC.10.1021/bk-2003-0845Suche in Google Scholar
Hill, C.A.S., Cetin, N.S. (2000) Surface activation of wood for graft polymerisation. Int. J. Adhes. Adhes.20:71–76.10.1016/S0143-7496(99)00017-2Suche in Google Scholar
Rowell, R.M., Ellis, W.D. (1978) Determination of dimensional stabilization of wood using the water-soak method. Wood Fiber10:104–111.Suche in Google Scholar
Rozman, H.D., Kumar, R.N., Abdul Khalil, H.P.S., Abusamah, A., Abu, R. (1997) Chemical modification of wood with maleic anhydride and subsequent copolymerization with diallyl phthalate. J. Wood Chem. Technol.21:419–433.10.1080/02773819708003142Suche in Google Scholar
© Walter de Gruyter Berlin New York
Artikel in diesem Heft
- Chemical changes in silver birch (Betula pendula Roth) wood caused by hydrogen peroxide bleaching and monitored by color measurement (CIELab) and UV-Vis, FTIR and UVRR spectroscopy
- Hydrophobisation and densification of wood by different chemical treatments
- Functionalisation of wood by reaction with 3-isocyanatopropyltriethoxysilane: Grafting and hydrolysis of the triethoxysilane end groups
- Isolation and fractionation of lignosulfonates by amine extraction and ultrafiltration: A comparative study
- Bioactive phenolic substances in industrially important tree species. Part 4: Identification of two new 7-hydroxy divanillyl butyrolactol lignans in some spruce, fir, and pine species
- Characterization of physiological functions of sapwood IV: Formation and accumulation of lignans in sapwood of Cryptomeria japonica (L.f.) D. Don after felling
- X-ray scattering studies of thermally modified Scots pine (Pinus sylvestris L.)
- Differences in acoustic velocity by resonance and transit-time methods in an anisotropic laminated wood medium
- Parallel-plate rheology of latex films bonded to wood
- An assessment of the feasibility of ultrasound as a defect detector in lumber
- Vibrational properties of green wood in high-temperature water vapor
- The stiffness modulus in Norway spruce as a function of year ring
- Strain analysis in bulk forming of wood
- Decay fungi from playground wood products in service using 28S rDNA sequence analysis
- Effect of climatic variables on chromated copper arsenate (CCA) leaching during above-ground exposure
- Protic ionic liquids with organic anion as wood preservative
Artikel in diesem Heft
- Chemical changes in silver birch (Betula pendula Roth) wood caused by hydrogen peroxide bleaching and monitored by color measurement (CIELab) and UV-Vis, FTIR and UVRR spectroscopy
- Hydrophobisation and densification of wood by different chemical treatments
- Functionalisation of wood by reaction with 3-isocyanatopropyltriethoxysilane: Grafting and hydrolysis of the triethoxysilane end groups
- Isolation and fractionation of lignosulfonates by amine extraction and ultrafiltration: A comparative study
- Bioactive phenolic substances in industrially important tree species. Part 4: Identification of two new 7-hydroxy divanillyl butyrolactol lignans in some spruce, fir, and pine species
- Characterization of physiological functions of sapwood IV: Formation and accumulation of lignans in sapwood of Cryptomeria japonica (L.f.) D. Don after felling
- X-ray scattering studies of thermally modified Scots pine (Pinus sylvestris L.)
- Differences in acoustic velocity by resonance and transit-time methods in an anisotropic laminated wood medium
- Parallel-plate rheology of latex films bonded to wood
- An assessment of the feasibility of ultrasound as a defect detector in lumber
- Vibrational properties of green wood in high-temperature water vapor
- The stiffness modulus in Norway spruce as a function of year ring
- Strain analysis in bulk forming of wood
- Decay fungi from playground wood products in service using 28S rDNA sequence analysis
- Effect of climatic variables on chromated copper arsenate (CCA) leaching during above-ground exposure
- Protic ionic liquids with organic anion as wood preservative
