{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T05:07:50Z","timestamp":1788930470048,"version":"build-2803163510"},"reference-count":33,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2026,9,7]],"date-time":"2026-09-07T00:00:00Z","timestamp":1788739200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100005908","name":"Federal Ministry of Agriculture, Food, and Regional Identity","doi-asserted-by":"publisher","award":["2220HV044B"],"award-info":[{"award-number":["2220HV044B"]}],"id":[{"id":"10.13039\/501100005908","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100005908","name":"Federal Ministry of Agriculture, Food, and Regional Identity","doi-asserted-by":"publisher","award":["220HV044C"],"award-info":[{"award-number":["220HV044C"]}],"id":[{"id":"10.13039\/501100005908","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100031363","name":"Technical University of Applied Sciences Wildau","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100031363","id-type":"DOI","asserted-by":"crossref"}]},{"id":[{"id":"https:\/\/ror.org\/00k62pe27","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Wood is a sustainable and renewable resource whose various uses include heating and manufacturing of various components for different sectors. The ever-increasing global demand for wood necessitates expanding the lifetime of wood products by reusing or recycling the wood into new products, for example in wood composites. To make the case for using preservative-treated wood to produce composites, this study investigates the capability of an unsaturated polyester matrix to encapsulate low-molecular-weight molecules. Ultraviolet-visible (UV-Vis) spectroscopy and gas chromatography\u2013mass spectrometry (GC-MS) were used to study the leaching behaviour from wood composites upon storage in water. In a first step, the wood used for the wood composites was treated with UV-active model compounds (uranine and Nile red), combined with resin to make wood composites, and their leaching into water was determined by UV-vis spectroscopy. In the GC-MS study, a similar experimental setup was used to study the leaching of wood preservatives (tebuconazole, propiconazole, and permethrin) over time from wood composites. The leaching of the wood preservatives from the wood composites upon water storage was assessed and quantified using GC-MS. The study found that the majority of the studied compounds only leach to a very small extent from the wood composites. Possible reasons for variations in leaching behaviour are discussed. These findings are an important first step in the endeavour of reusing contaminated wood in wood composites.<\/jats:p>","DOI":"10.3390\/ma19173800","type":"journal-article","created":{"date-parts":[[2026,9,7]],"date-time":"2026-09-07T10:30:46Z","timestamp":1788777046000},"page":"3800","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Study of the Leaching of Low-Molecular-Weight Molecules from Wood-Reinforced Unsaturated Polyester Composites Using UV-Vis Spectroscopy and Gas Chromatography\u2013Mass Spectrometry"],"prefix":"10.3390","volume":"19","author":[{"given":"Vivian","family":"M\u00fcller","sequence":"first","affiliation":[{"name":"Fraunhofer Institute of Applied Polymer Research IAP, Research Division Polymer Composites PYCO, Schmiedestra\u00dfe 5, 15745 Wildau, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Felix","family":"Behrendt","sequence":"additional","affiliation":[{"name":"Department Fiber Composite Material Technologies, Technical University of Applied Sciences Wildau, Hochschulring 1, 15745 Wildau, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-0752-639X","authenticated-orcid":false,"given":"Christian","family":"Dreyer","sequence":"additional","affiliation":[{"name":"Fraunhofer Institute of Applied Polymer Research IAP, Research Division Polymer Composites PYCO, Schmiedestra\u00dfe 5, 15745 Wildau, Germany"},{"name":"Department Fiber Composite Material Technologies, Technical University of Applied Sciences Wildau, Hochschulring 1, 15745 Wildau, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,9,7]]},"reference":[{"key":"ref_1","unstructured":"Food and Agriculture Association of the United Nations (FAO) (2020). Global Forest Resources Assessment (FRA2020), FAO. Main Report."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"333","DOI":"10.1016\/j.rser.2016.09.107","article-title":"The Wood from the Trees. The Use of Timber in Construction","volume":"68","author":"Ramage","year":"2017","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"269","DOI":"10.1038\/s41893-019-0462-4","article-title":"Buildings as a Global Carbon Sink","volume":"3","author":"Churkina","year":"2020","journal-title":"Nat. Sustain."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"104","DOI":"10.1016\/j.envsci.2009.12.005","article-title":"Meta-analysis of Greenhouse Gas Displacement Factors of Wood Product Substitution","volume":"13","author":"Sathre","year":"2010","journal-title":"Environ. Sci. Policy"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"139","DOI":"10.1007\/s40725-015-0016-6","article-title":"Wood\u2013Plastic Composite Technology","volume":"1","author":"Gardner","year":"2015","journal-title":"Curr. For. Rep."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Carus, M., Eder, A., Dammer, L., Korte, H., Scholz, L., Essel, R., and Breitmayer, E. (2015). Wood-Plastic Composites (WPC) and Natural Fibre Composites (NFC): European and Global Markets 2012 and Future Trends in Automotive and Construction, nova-Institute.","DOI":"10.52548\/THSZ9515"},{"key":"ref_7","unstructured":"Food and Agriculture Association of the United Nations (FAO) (2022). Global Forest Sector Outlook 2050: Assessing Future Demand and Sources of Timber for a Sustainable Economy\u2014Background Paper for The State of the World\u2019s Forests 2022, FAO. FAO Forestry Working Paper, No. 31."},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Leskinen, P., Cardellini, G., Gonz\u00e1lez-Garc\u00eda, S., Hurmekoski, E., Sathre, R., Sepp\u00e4l\u00e4, J., Smyth, C., Stern, T., and Verkerk, P.J. (2018). Substitution Effects of Wood-Based Products in Climate Change Mitigation, European Forest Institute. From Science to Policy 7.","DOI":"10.36333\/fs07"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"120478","DOI":"10.1016\/j.techfore.2020.120478","article-title":"Boosting the EU Forest-Based Bioeconomy: Market, Climate, and Employment Impacts","volume":"163","author":"Jonsson","year":"2021","journal-title":"Technol. Forecast. Soc. Change"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"177","DOI":"10.1007\/s40725-016-0042-z","article-title":"Forest Products Markets under Change: Review and Research Implications","volume":"2","author":"Hurmekoski","year":"2016","journal-title":"Curr. For. Rep."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1016\/j.biombioe.2014.08.013","article-title":"Wood Flow Analysis: Quantification of Resource Potentials, Cascades and Carbon Effects","volume":"79","author":"Mantau","year":"2015","journal-title":"Biomass Bioenergy"},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Besserer, A., Troilo, S., Girods, P., Rogaume, Y., and Brosse, N. (2021). Cascading Recycling of Wood Waste: A Review. Polymers, 13.","DOI":"10.3390\/polym13111752"},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Kamperidou, V. (2019). The Biological Durability of Thermally- and Chemically-Modified Black Pine and Poplar Wood Against Basidiomycetes and Mold Action. Forests, 10.","DOI":"10.3390\/f10121111"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"784","DOI":"10.1002\/ps.1386","article-title":"A Brief Review of the Past, Present and Future of Wood Preservation","volume":"63","author":"Schultz","year":"2007","journal-title":"Pest Manag. Sci."},{"key":"ref_15","first-page":"8","article-title":"Past, Present, and Future of the Wood Preservation Industry","volume":"53","author":"Freeman","year":"2003","journal-title":"For. Prod. J."},{"key":"ref_16","unstructured":"(2008). Directive (EU) 2025\/1892 of the European Parliament and of the Council of 10 September 2025 amending Directive 2008\/98\/EC on Waste. Off. J. Eur. Union, L312, 1\u201331."},{"key":"#cr-split#-ref_17.1","unstructured":"(2012). Consolidated text: Regulation"},{"key":"#cr-split#-ref_17.2","unstructured":"(EU) No 528\/2012 of the European Parliament and of the Council of 22 May 2012 concerning the Making Available on the Market and Use of Biocidal Products. Off. J. Eur. Union, L167, 1-178."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"75","DOI":"10.1016\/j.jhazmat.2004.06.025","article-title":"Leaching of CCA-Treated Wood: Implications for Waste Disposal","volume":"114","author":"Townsend","year":"2004","journal-title":"J. Hazard. Mater."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"223","DOI":"10.1016\/j.ibiod.2013.07.011","article-title":"Efficacy of Linseed- and Tung-Oil-Treated Wood against Wood-Decay Fungi and Water Uptake","volume":"85","author":"Humar","year":"2013","journal-title":"Int. Biodeterior. Biodegrad."},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Krause, K.C., Sauerbier, P., Koddenberg, T., and Krause, A. (2018). Utilization of Recycled Material Sources for Wood-Polypropylene Composites: Effect on Internal Composite Structure, Particle Characteristics and Physico-Mechanical Properties. Fibers, 6.","DOI":"10.3390\/fib6040086"},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Kutnar, A., and Muthu, S.S. (2016). Wood-Plastic Composites\u2014Performance and Environmental Impacts. Environmental Impacts of Traditional and Innovative Forest-Based Bioproducts, Springer. [1st ed.].","DOI":"10.1007\/978-981-10-0655-5"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"76","DOI":"10.1016\/j.wasman.2015.09.011","article-title":"Substitution Potentials of Recycled HDPE and Wood Particles from Post-Consumer Packaging Waste in Wood\u2013Plastic Composites","volume":"46","author":"Sommerhuber","year":"2015","journal-title":"Waste Manag."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"211","DOI":"10.1016\/j.dental.2005.05.005","article-title":"Hygroscopic and hydrolytic effects in dental polymer networks","volume":"22","author":"Ferracane","year":"2006","journal-title":"Dent. Mater."},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Oksman Niska, K., and Sain, M. (2008). Outdoor Durability of Wood\u2013Polymer Composites. Wood\u2013Polymer Composites, Woodhead Publishing.","DOI":"10.1533\/9781845694579"},{"key":"ref_25","first-page":"7","article-title":"Durability of Wood-Plastic Composites","volume":"16","author":"Morrell","year":"2006","journal-title":"Wood Des. Focus"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1479","DOI":"10.1016\/j.envpol.2009.12.027","article-title":"Field-Scale Leaching of Arsenic, Chromium and Copper from Weathered Treated Wood","volume":"158","author":"Hasan","year":"2010","journal-title":"Environ. Pollut."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"630905","DOI":"10.1155\/2015\/630905","article-title":"Visualizing the Microdistribution of Zinc Borate in Oriented Strand Board Using X-Ray Microcomputed Tomography and SEM-EDX","volume":"2015","author":"Evans","year":"2015","journal-title":"J. Compos."},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Ganguly, S., Petri\u010d, M., Tripathi, S., and Kr\u017ei\u0161nik, D. (2024). Assessment of Fungal Resistance and Preservative Retention in Microwave-Pretreated Norway Spruce Wood. Processes, 12.","DOI":"10.3390\/pr12040750"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"271","DOI":"10.1007\/s00107-020-01496-y","article-title":"Suitability of analytical methods to determine tebuconazole, propiconazole and permethrin in aged wood samples","volume":"78","author":"Schoknecht","year":"2020","journal-title":"Eur. J. Wood Wood Prod."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"205","DOI":"10.1016\/j.aca.2011.06.058","article-title":"Method development for the determination of wood preservatives in commerically treated wood using gas chromatography-mass spectrometry","volume":"702","author":"Stavova","year":"2011","journal-title":"Anal. Chim. Acta"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"2422","DOI":"10.1002\/app.2093","article-title":"Diffusion coefficients of additives in polymers. I. Correlation with geometric parameters","volume":"82","author":"Reynier","year":"2001","journal-title":"J. Appl. Polym. Sci."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"2434","DOI":"10.1002\/app.2094","article-title":"Additive diffusion coefficients in polyolefins. II. Effect of swelling and temperature on the D = f(M) correlation","volume":"82","author":"Reynier","year":"2001","journal-title":"J. Appl. Polym. 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