Vegetable Fillers and Rapeseed Oil-Based Polyol as Natural Raw Materials for the Production of Rigid Polyurethane Foams
| Autor: | Milena Leszczyńska, Aleksander Prociak, Michał Leszczyński, Michał Gloc, Joanna Ryszkowska, Maria Kurańska, Elżbieta Malewska |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
010407 polymers
Materials science Absorption of water 02 engineering and technology Raw material Friability 01 natural sciences lcsh:Technology Article chemistry.chemical_compound Polyol General Materials Science Thermal stability Composite material renewable sources lcsh:Microscopy Polyurethane lcsh:QC120-168.85 chemistry.chemical_classification biocomposites vegetable fillers lcsh:QH201-278.5 lcsh:T Pomace polyurethane foams rapeseed oil-based polyol 021001 nanoscience & nanotechnology 0104 chemical sciences Compressive strength chemistry lcsh:TA1-2040 lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering natural oil 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials, Vol 14, Iss 1772, p 1772 (2021) Materials Volume 14 Issue 7 |
| ISSN: | 1996-1944 |
| Popis: | The reported study concerns the introduction of renewable raw materials into the formulation of rigid polyurethane foams in the quest for the sustainable development of polymer composites. In this study, rigid polyurethane foam composites were prepared using 75 wt.% of rapeseed oil-based polyol and 15 parts per hundred parts of polyol (php) of natural fillers such as chokeberry pomace, raspberry seeds, as well as hazelnut and walnut shells. The influence of the used raw materials on the foaming process, structure, and properties of foams was investigated using a FOAMAT analyzer and a wide selection of characterization techniques. The introduction of renewable raw materials limited reactivity of the system, which reduced maximum temperature of the foaming process. Moreover, foams prepared using renewable raw materials were characterized by a more regular cell structure, a higher share of closed cells, lower apparent density, lower compressive strength and glass transition temperature, low friability (< 2%), low water absorption (< 1%), high dimensional stability (< ± 0.5%) and increased thermal stability. The proper selection and preparation of the renewable raw materials and the rational development of the polyurethane recipe composition allow for the preparation of environmentally-friendly foam products with beneficial application properties considering the demands of the circular economy in the synthesis of rigid foams. |
| Databáze: | OpenAIRE |
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