Replacement of petroleum-derived diols by sustainable biopolyols in one component polyurethane foams
| Autor: | João C. Bordado, Ana C. Marques, Carlos Nieto de Castro, Aster De Schrijver, Rui Galhano dos Santos, Maria Margarida Mateus, Mário Vale |
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| Rok vydání: | 2019 |
| Předmět: |
Thermogravimetric analysis
Materials science 020209 energy Strategy and Management Biomass 02 engineering and technology Cork engineering.material Industrial and Manufacturing Engineering chemistry.chemical_compound 0202 electrical engineering electronic engineering information engineering 0505 law General Environmental Science Polyurethane Renewable Energy Sustainability and the Environment 05 social sciences Liquefaction Polyester Chemical engineering chemistry visual_art 050501 criminology visual_art.visual_art_medium engineering Bark Valorisation |
| Zdroj: | Journal of Cleaner Production. 212:1036-1043 |
| ISSN: | 0959-6526 |
| DOI: | 10.1016/j.jclepro.2018.12.088 |
| Popis: | This work reports on the development of eco-innovative and high performance one component polyurethane foams, originated from biopolyols, which were obtained from liquefaction of biomass, industry by-products, namely cork powder and eucalyptus bark. This effort consists of a cleaner production method to enable more sustainable materials and industry by-products valorisation, but also a reduction of the dependency on fossil oil derivatives. Low-value industrial cork powder and eucalyptus bark shreds were successfully liquefied into polyols, by a process based on acid-catalysed liquefaction, at atmospheric pressure, with conversion ratios up to 79%. The obtained biopolyols exhibited low acid values (1 mg KOH/g) and relatively high hydroxyl numbers (197–272 mg KOH/g) and were introduced into one component polyurethane formulations, fully replacing the petroleum-derived polyether and polyester diols in the formulation. The resultant rigid polyurethane foams exhibited a high output (16 g/s) and acceptable physical quality, assessed by optical and scanning electron microscopy. Their chemical structure, mechanical and thermal properties were evaluated through Fourier Transformed infrared spectroscopy, compression mechanical testing and thermogravimetric analysis, respectively. |
| Databáze: | OpenAIRE |
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