Chemical reaction of maritime pine sapwood (Pinus pinaster Soland) with alkoxysilane molecules: A study of chemical pathways
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Abstract
The chemical modification of maritime pine sapwood (Pinus pinaster) with alkoxysilanes was studied according to three different pathways: carbamoylation with 3-isocyanatopropyltriethoxysilane, etherification with 3-glycidoxypropyltrimethoxysilane and alcoholysis of n-propyltrimethoxysilane. Grafting was confirmed by weight percent gain calculations (WPG), infrared spectroscopy (FTIR) as well as 13C and 29Si NMR CP MAS analysis. Signals of the grafted groups in the different spectra were assigned and the reactivity of the trialkoxysilane moieties towards wood was discussed. Experiments with model wood blocks showed that the reactions investigated occurred within the wood cell walls. Grafted chemicals were found to be relatively stable with regard to water leaching but only slight dimensional stabilisation was noted after treatment.
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© Walter de Gruyter
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Articles in the same Issue
- The effects of initial spacing on wood density, fibre and pulp properties in jack pine (Pinus banksiana Lamb.)
- An improved procedure for isolation of residual lignins from hardwood kraft pulps
- Small angle scattering in the Porod region from hydrated paper sheets at varying humidities
- Application of confocal Raman spectroscopy for the topochemical distribution of lignin and cellulose in plant cell walls of beech wood (Fagus sylvatica L.) compared to UV microspectrophotometry
- UV-microscopic analysis of acetylated spruce and birch cell walls
- On-line study of lignin behaviour in dilute alkaline solution by the SEC-UV method
- Extracellular diffusion pathway for heartwood substances in Albizia julibrissin Durazz.
- New glucosides from Eucalyptus globulus wood, bark and kraft pulps
- Nondestructive characterization of wood by monitoring of local elastic anisotropy and dynamic nonlinearity
- Chemical reaction of maritime pine sapwood (Pinus pinaster Soland) with alkoxysilane molecules: A study of chemical pathways
- Thermal forming of chemically modified wood to make high-performance plastic-like wood composites
- Eco-composite from poly(lactic acid) and bamboo fiber
- Bamboo fiber (BF)-filled poly(butylenes succinate) bio-composite – Effect of BF-e-MA on the properties and crystallization kinetics
- Dimensional changes in Corsican pine (Pinus nigra Arnold) modified with acetic anhydride measured using a helium pycnometer
- Microwave-enhanced release of formaldehyde from plywood
- Artificial weathering of tropical woods. Part 1: Changes in wettability
- Artificial weathering of tropical woods. Part 2: Color change
- Inhibition of fungal degradation of wood by 2-hydroxypyridine-N-oxide
- Microwave treatment to accelerate fixation of copper-ethanolamine (Cu-EA) treated wood