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Wood adhesives from waste-free recycling depolymerisation of flexible polyurethane foams
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SYSNO ASEP 0542063 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Wood adhesives from waste-free recycling depolymerisation of flexible polyurethane foams Author(s) Beran, R. (CZ)
Zárybnická, Lucie (UTAM-F) RID, SAI, ORCID
Machová, Dita (UTAM-F) RID, ORCID, SAI
Večeřa, M. (CZ)
Kalenda, P. (CZ)Number of authors 5 Article number 127142 Source Title Journal of Cleaner Production. - : Elsevier - ISSN 0959-6526
Roč. 305, July (2021)Number of pages 10 s. Publication form Print - P Language eng - English Country GB - United Kingdom Keywords flexible polyurethane foams ; chemical recycling ; depolymerisation ; adhesive ; formulation Wood Subject RIV JJ - Other Materials OECD category Materials engineering Method of publishing Limited access Institutional support UTAM-F - RVO:68378297 UT WOS 000655680400014 EID SCOPUS 85105046193 DOI 10.1016/j.jclepro.2021.127142 Annotation Flexible polyurethane foams (FPUF) are common plastic materials used in industry or consumer goods (heat and sound insulation, washing sponges, car seats). FPUF wastes are frequently taken to landfills and incineration, which causes environmental problems. The current method of physical recycling for rebound foams seems to be efficient, however, with limited usage in the structure of mattresses or construction insulations. Disadvantages of the current chemical recycling methods of FPUF consist of the slow reaction process, high energy consumption, and production of secondary waste by-products. This article deals with the special technique of the controlled depolymerisation of the studied FPUF. FPUF was depolymerised in an ambience of non-reactive liquid at a temperature of 130 °C, only giving liquid products. The depolymerisation process and the final product was characterised by titration methods, Fourier Transform-Infrared Spectroscopy (FT-IR), Gas Chromatography/Mass Spectrometry (GC/MS), and Gel Permeable Chromatography (GPC). The recycled polyol (product of depolymerisation) was tested in model polyurethane adhesive formulations and evaluated for shear tensile strength on spruce wood test pieces. Workplace Institute of Theoretical and Applied Mechanics Contact Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Year of Publishing 2022 Electronic address https://doi.org/10.1016/j.jclepro.2021.127142
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