Optimization of the formulation for the synthesis of bio-based foams
| Autor: | Juliette Merle, Fatima Charrier-El Bouhtoury, Pierre Trinsoutrot |
|---|---|
| Přispěvatelé: | Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM), Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Eco-friendly materials Materials science Polymers and Plastics Tannin Characterization General Physics and Astronomy Bio based 02 engineering and technology 01 natural sciences Lignin Viscosity Density (specific gravity) 010608 biotechnology Materials Chemistry [CHIM]Chemical Sciences Porous materials Composite material Biobased porous material Flavonoids Insulation applications Organic Chemistry Critical factors Additives Mechanical resistance Physical characterization 021001 nanoscience & nanotechnology Foam characterization Characterization (materials science) Solvent Mixtures 0210 nano-technology Porous medium |
| Zdroj: | European Polymer Journal European Polymer Journal, Elsevier, 2016, 84, pp.577--588. ⟨10.1016/j.eurpolymj.2016.09.044⟩ |
| ISSN: | 0014-3057 1873-1945 |
| Popis: | International audience; Development of new eco-friendly materials destined to insulation applications is a major necessity. Aiming to contribute with this ecological strategy, we previously developed a new organic foam based on tannins and lignosulfonate. Our promising results lead us to analyze the role and impact of additives on the foaming process as well as on the solid foam properties. In fact, additives are critical factors in foam characterization since they define foam's properties. Thus, in the present study, we tested different additive concentrations, such as hexamine, glyoxal and tween 80, in order to have a better understanding of their impact on foam properties characteristics and performances aiming to improve foam fabricating process. The densities of the obtained foams varied from 105 to 188 kg/m3 and our study reveals that the mixture viscosity during foaming seems to play a crucial role in foam properties. Solvent, by diluting the mixture, tend to decrease mixture viscosity resulting in lower mechanical properties and density of the final material. Conversely, hexamine which act as bonding agent tend to increase mixture viscosity leading to higher density and mechanical resistance. Finally, some process enhancement propositions are discussing. © 2016 Elsevier Ltd |
| Databáze: | OpenAIRE |
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