Hemp Seed Oil and Oilseed Radish Oil as New Sources of Raw Materials for the Synthesis of Bio-Polyols for Open-Cell Polyurethane Foams
We report on the development of open-cell polyurethane foams based on bio-polyols from vegetable oils: hemp seed oil, oilseed radish oil, rapeseed oil and used rapeseed cooking oil. The crude oils were pressed from seeds and subjected to an optimal solvent-free epoxidation process. Bio-polyols were...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-12-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/24/8891 |
| _version_ | 1797456558153531392 |
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| author | Krzysztof Polaczek Maria Kurańska |
| author_facet | Krzysztof Polaczek Maria Kurańska |
| author_sort | Krzysztof Polaczek |
| collection | DOAJ |
| description | We report on the development of open-cell polyurethane foams based on bio-polyols from vegetable oils: hemp seed oil, oilseed radish oil, rapeseed oil and used rapeseed cooking oil. The crude oils were pressed from seeds and subjected to an optimal solvent-free epoxidation process. Bio-polyols were obtained by a ring-opening reaction using diethylene glycol and tetrafluoroboric acid as catalysts. The resultant foams were analysed in terms of their apparent density, thermal conductivity coefficient, mechanical strength, closed cell content, short-term water absorption and water vapour permeability, while their morphology was examined using scanning electron microscopy. It was found that regardless of the properties of the oils, especially the content of unsaturated bonds, it was possible to obtain bio-polyols with very similar properties. The foams were characterized by apparent densities ranging from 11.2 to 12.1 kg/m<sup>3</sup>, thermal conductivity of <39 mW/m∙K, open cell contents of >97% and high water vapour permeability. |
| first_indexed | 2024-03-09T16:09:32Z |
| format | Article |
| id | doaj.art-e9713fe4abc44c24b49759d59770ee30 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T16:09:32Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-e9713fe4abc44c24b49759d59770ee302023-11-24T16:23:26ZengMDPI AGMaterials1996-19442022-12-011524889110.3390/ma15248891Hemp Seed Oil and Oilseed Radish Oil as New Sources of Raw Materials for the Synthesis of Bio-Polyols for Open-Cell Polyurethane FoamsKrzysztof Polaczek0Maria Kurańska1Department of Chemistry and Technology of Polymers, Cracow University of Technology, Warszawska 24, 31-155 Cracow, PolandDepartment of Chemistry and Technology of Polymers, Cracow University of Technology, Warszawska 24, 31-155 Cracow, PolandWe report on the development of open-cell polyurethane foams based on bio-polyols from vegetable oils: hemp seed oil, oilseed radish oil, rapeseed oil and used rapeseed cooking oil. The crude oils were pressed from seeds and subjected to an optimal solvent-free epoxidation process. Bio-polyols were obtained by a ring-opening reaction using diethylene glycol and tetrafluoroboric acid as catalysts. The resultant foams were analysed in terms of their apparent density, thermal conductivity coefficient, mechanical strength, closed cell content, short-term water absorption and water vapour permeability, while their morphology was examined using scanning electron microscopy. It was found that regardless of the properties of the oils, especially the content of unsaturated bonds, it was possible to obtain bio-polyols with very similar properties. The foams were characterized by apparent densities ranging from 11.2 to 12.1 kg/m<sup>3</sup>, thermal conductivity of <39 mW/m∙K, open cell contents of >97% and high water vapour permeability.https://www.mdpi.com/1996-1944/15/24/8891open-cell foamPURpolyurethanebio-polyolhemp seed oilused cooking oil |
| spellingShingle | Krzysztof Polaczek Maria Kurańska Hemp Seed Oil and Oilseed Radish Oil as New Sources of Raw Materials for the Synthesis of Bio-Polyols for Open-Cell Polyurethane Foams Materials open-cell foam PUR polyurethane bio-polyol hemp seed oil used cooking oil |
| title | Hemp Seed Oil and Oilseed Radish Oil as New Sources of Raw Materials for the Synthesis of Bio-Polyols for Open-Cell Polyurethane Foams |
| title_full | Hemp Seed Oil and Oilseed Radish Oil as New Sources of Raw Materials for the Synthesis of Bio-Polyols for Open-Cell Polyurethane Foams |
| title_fullStr | Hemp Seed Oil and Oilseed Radish Oil as New Sources of Raw Materials for the Synthesis of Bio-Polyols for Open-Cell Polyurethane Foams |
| title_full_unstemmed | Hemp Seed Oil and Oilseed Radish Oil as New Sources of Raw Materials for the Synthesis of Bio-Polyols for Open-Cell Polyurethane Foams |
| title_short | Hemp Seed Oil and Oilseed Radish Oil as New Sources of Raw Materials for the Synthesis of Bio-Polyols for Open-Cell Polyurethane Foams |
| title_sort | hemp seed oil and oilseed radish oil as new sources of raw materials for the synthesis of bio polyols for open cell polyurethane foams |
| topic | open-cell foam PUR polyurethane bio-polyol hemp seed oil used cooking oil |
| url | https://www.mdpi.com/1996-1944/15/24/8891 |
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