Vegetable Fillers and Rapeseed Oil-Based Polyol as Natural Raw Materials for the Production of Rigid Polyurethane Foams

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...

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Bibliographic Details
Published in:Materials 2021-04, Vol.14 (7), p.1772
Main Authors: Leszczyńska, Milena, Malewska, Elżbieta, Ryszkowska, Joanna, Kurańska, Maria, Gloc, Michał, Leszczyński, Michał K, Prociak, Aleksander
Format: Article
Language:English
Subjects:
Bulk density
Cellulose
Compressive strength
Dimensional stability
Environmental protection
Fillers
Foaming
Food
Friability
Glass transition temperature
Hazelnuts
Heat conductivity
Lignin
Mechanical properties
Plastic foam
Polymer matrix composites
Polyurethane foam
Rapeseed
Rapeseed oil
Raw materials
Seeds
Sustainable development
Thermal stability
Vegetable oils
Viscosity
Walnuts
Water absorption
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Summary: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 (
ISSN:1996-1944
1996-1944
DOI:10.3390/ma14071772