Organic Acid Lignin-based Polyurethane Films: Synthesis Parameter Optimization
| Autor: | Bouchra Benjelloun-Mlayah, Michel Delmas, Laurence Llovera |
|---|---|
| Přispěvatelé: | Compagnie Industrielle de la Matiere Vegetale, Laboratoire de génie chimique [ancien site de Basso-Cambo] (LGC), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Compagnie Industrielle de la Matière Végétale - CIMV (FRANCE), Laboratoire de Génie Chimique - LGC (Toulouse, France), Institut National Polytechnique de Toulouse - INPT (FRANCE) |
| Rok vydání: | 2016 |
| Předmět: |
Environmental Engineering
Materials science lcsh:Biotechnology Organic acid lignin Bioengineering 02 engineering and technology Polyethylene glycol 010402 general chemistry 01 natural sciences Dibutyltin dilaurate chemistry.chemical_compound [CHIM.GENI]Chemical Sciences/Chemical engineering lcsh:TP248.13-248.65 PEG ratio Polymer chemistry Génie chimique Lignin Shore durometer [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering Thermal stability Génie des procédés Waste Management and Disposal Polyurethane Thermal decomposition Tensile property Polyurethane films 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Chemical engineering Thermostability 0210 nano-technology |
| Zdroj: | Bioresources Bioresources, North Carolina State University, 2016, 11 (3), pp.6320-6334. ⟨10.15376/biores.11.3.6320-6334⟩ BioResources, Vol 11, Iss 3, Pp 6320-6334 (2016) |
| ISSN: | 1930-2126 |
| DOI: | 10.15376/biores.11.3.6320-6334 |
| Popis: | International audience; Polyurethane (PU) films were prepared by solution casting using a three-component system, namely, a novel solvolytic lignin, polyethylene glycol (PEG), and tolylene 2,4-diisocyanate (TDI), with dibutyltin dilaurate as a catalyst. An important objective was to incorporate as much lignin as possible. To this end, PU film synthesis was optimized by varying the lignin content (30 to 70 wt.% with respect to PEG), isocyanate-to-hydroxyl (NCO/OH) stoichiometry (0.8, 1, 1.2, 1.5, and 1.8), and PEG molecular weight (400, 600, and 1000). The results showed that the films derived from PEG 600 and a NCO/OH ratio of 1.5 were synthesized with a maximum content of 70% lignin, with respect to PEG. The effects of lignin content on the tensile properties and the thermostability of the PU films were studied. The onset decomposition temperature (TOD) of the lignin PU films reached an average limit of 310 °C, regardless of the lignin content, and 260 °C for a PU film without lignin. Thus, the addition of lignin, as a PEG substitute in polyurethane films, leads to better thermal stability. Furthermore, breaking stress, Young’s modulus, and Shore hardness of PU films increased constantly with lignin content, without reaching a maximum. |
| Databáze: | OpenAIRE |
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