Effects of recovered wood on the formaldehyde release of particleboards
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Sarah Himmel
Abstract
Three-layer polymeric diphenyl-methane-diisocyanate (pMDI)-bonded particleboards (PBs) were produced with different proportions of simulated recovered wood (rW) in the core layers (cLs) to assess the effect of rW on the formaldehyde (FA) release of PB. A pre-test was conducted on furniture and particle mixtures of rW to determine the range of expectable FA emission of rW. The FA content of the raw particle mixtures could be predicted from the contents of the individual raw material and did not change compared to the PB. FA content correlated strongly with PB-FA emission. It was possible to predict the maximum PB-FA contents, which should not be exceeded according to F**** and CARB 2 by linear regression models. At moderate and high total FA emission levels, the FA emission of the particle mixtures was approximately 60% higher than the emission of PB blocks. At low total FA level, the flask method and the gas analysis method exhibited different results with regard to the emissions from particles and their respective PBs.
Acknowledgments
This study is part of the project “WoodSens” – developing and implementing FA online-sensor systems in wood-based panel processing, which is supported by the WoodWisdom ERA-Net; the Federal Ministry of Food, Agriculture and Consumer Protection based on a decision of the Parliament of the Federal Republic of Germany; and the Ministry of Food, Agriculture and Fisheries in France, the Xylforest project in France (ANR-10-EQPX-16). The authors would like to acknowledge Tim Ritter from the Department Ecoinformatics, Biometrics and Forest Growth of the UGOE for his advice on statistics.
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© 2014 by De Gruyter
Articles in the same Issue
- Frontmatter
- Original Articles
- Lignin chemistry and topochemistry during kraft delignification of Eucalyptus globulus genotypes with contrasting pulpwood characteristics
- Rapid functionalisation of cellulose-based materials using a mixture containing laccase activated lauryl gallate and sulfonated lignin
- Aggregation of sodium lignosulfonate above a critical temperature
- Impact of iron(II) and oxygen on degradation of oak – modeling of the Vasa wood
- Morphological, thermal, and structural aspects of dried and redispersed nanofibrillated cellulose (NFC)
- Effects of recovered wood on the formaldehyde release of particleboards
- Oxalic acid production and metal removal during fungal degradation of CCA-treated wood in nutrient culture
- Analysis of cold temperature effect on stress wave velocity in green wood
- Finite element modeling and experimental validation of radio frequency heating (RFH) of curved laminated wood-based panels
- Anti-termitic potential of heartwood and bark extract and chemical compounds isolated from Madhuca utilis Ridl. H. J. Lam and Neobalanocarpus heimii King P. S. Ashton
- Effects of thermal modification on wood ultrastructure analyzed with crystallographic texture
- Short Notes
- Potential contribution of anion exclusion to hydroxide penetration in green liquor-modified kraft pulping
- Improving the weathering on larch wood samples by electron beam irradiation (EBI)
- Effect of plasma treatment on cell-wall adhesion of urea-formaldehyde resin revealed by nanoindentation
- Imaging hyphal growth of Physisporinus vitreus in Norway spruce wood by means of confocal laser scanning microscopy (CLSM)
- Meetings
- Meetings
Articles in the same Issue
- Frontmatter
- Original Articles
- Lignin chemistry and topochemistry during kraft delignification of Eucalyptus globulus genotypes with contrasting pulpwood characteristics
- Rapid functionalisation of cellulose-based materials using a mixture containing laccase activated lauryl gallate and sulfonated lignin
- Aggregation of sodium lignosulfonate above a critical temperature
- Impact of iron(II) and oxygen on degradation of oak – modeling of the Vasa wood
- Morphological, thermal, and structural aspects of dried and redispersed nanofibrillated cellulose (NFC)
- Effects of recovered wood on the formaldehyde release of particleboards
- Oxalic acid production and metal removal during fungal degradation of CCA-treated wood in nutrient culture
- Analysis of cold temperature effect on stress wave velocity in green wood
- Finite element modeling and experimental validation of radio frequency heating (RFH) of curved laminated wood-based panels
- Anti-termitic potential of heartwood and bark extract and chemical compounds isolated from Madhuca utilis Ridl. H. J. Lam and Neobalanocarpus heimii King P. S. Ashton
- Effects of thermal modification on wood ultrastructure analyzed with crystallographic texture
- Short Notes
- Potential contribution of anion exclusion to hydroxide penetration in green liquor-modified kraft pulping
- Improving the weathering on larch wood samples by electron beam irradiation (EBI)
- Effect of plasma treatment on cell-wall adhesion of urea-formaldehyde resin revealed by nanoindentation
- Imaging hyphal growth of Physisporinus vitreus in Norway spruce wood by means of confocal laser scanning microscopy (CLSM)
- Meetings
- Meetings
