Tannin-based rigid foams: Characterization and modification |
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| Authors: | G Tondi A Pizzi |
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| Institution: | 1. Salzburg University of Applied Sciences, Forest Product Technology and Timber Construction Department, Marktstraße 136a, 5431 Kuchl, Austria;2. M Kaindl KG. Kaindlstraße 2, 5071 Wals-Salzburg, Austria;1. LERMAB, University of Lorraine, Epinal, France;2. Department of Wood Science and Technology, Biotechnical Faculty, University of Ljubljana, Slovenia;3. VTT Technical Research Center of Finland, Finland;4. Ledoga-Silvateam, San Michele Mondovì, Italy;5. Dept of Physics, King Abdulaziz University, Jeddah, Saudi Arabia;6. Chair of Forest Biomaterials and Freiburg Materials Research Center, Albert-Ludwigs University, Germany;7. IJL, UMR CNRS 7198, University of Lorraine, Epinal, France;1. LERMAB, ENSTIB, University of Lorraine, 27 Rue Philippe Séguin, BP 21042, 88051 Épinal Cedex 9, France;2. Pro2TecS-Chemical Product and Process Technology Research Centre, Department of Chemical Engineering, University of Huelva, Campus El Carmen, 21071 Huelva, Spain;3. Institute Jean Lamour, UMR CNRS, University of Lorraine, ENSTIB, 27 Rue Philippe Séguin, BP 21042, 88051 Epinal Cedex 9, France;4. Department of Physics, King Abdulaziz, Jeddah, Saudi Arabia;1. Université de Pau et des Pays de l’Adour, IPREM/EPCP, UMR CNRS 5254, IUT des Pays de l’Adour, BP 201, F-40004 Mont de Marsan, France;2. IUT des Pays de l’Adour, Département SGM, Mont de Marsan, France;1. LERMAB, University of Lorraine, Epinal, France;2. King Abdulaziz University, Jeddah, Saudi Arabia;3. Freiburger Materialforschungszentrum, Albert-Ludwigs University of Freiburg, Freiburg, Germany;4. Institut Jean Lamour, University of Lorraine, France;1. LERMAB, University of Lorraine, France;2. SILVA-INDUNOR, Argentina;3. IJL, UMR CNRS 7198, University of Lorraine, UPV-Metz, Département Chimie et Physique des Solides et Surfaces, France;4. Chair of Forest Biomaterials and Freiburg Materials Research Center, Albert-Ludwigs University of Freiburg, Germany;5. Department of Physics, King Abdulaziz University, Saudi Arabia |
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| Abstract: | Tannin-based rigid foams are networked structures obtained by polycondensations of polyflavonoid tannins and furfuryl alcohol. They present a wide range of characteristics. Thus, there is the need to characterise the different kinds of tannin foams to better understand their physical behaviour and their chemical composition. Mimosa tannin, pine tannin and quebracho tannin bark extracts were used as building blocks. Foams modified by the addition of hydroxymethylated lignin, polyurethane and an industrial surfactant were also characterised. Water absorption, compression resistance, direct flame behaviour and foam cells dimensions were measured for each foam sample. The foams were characterised also by 13C NMR analysis. Tannin-based rigid foams appear suitable for a wide range of applications. |
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