A Pathway toward a New Era of Open-Cell Polyurethane Foams—Influence of Bio-Polyols Derived from Used Cooking Oil on Foams Properties
In order to create greener polyurethane (PUR) foams, modified used cooking oils (UCO) were applied as starting resources for the synthesis of bio-polyols. The bio-polyols were produced using transesterification of UCO with diethylene glycol (UCO_DEG) and triethanolamine (UCO_TEA). Next, open-cell PU...
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MDPI AG
2020-11-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/22/5161 |
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| author | Maria Kurańska Elżbieta Malewska Krzysztof Polaczek Aleksander Prociak Joanna Kubacka |
| author_facet | Maria Kurańska Elżbieta Malewska Krzysztof Polaczek Aleksander Prociak Joanna Kubacka |
| author_sort | Maria Kurańska |
| collection | DOAJ |
| description | In order to create greener polyurethane (PUR) foams, modified used cooking oils (UCO) were applied as starting resources for the synthesis of bio-polyols. The bio-polyols were produced using transesterification of UCO with diethylene glycol (UCO_DEG) and triethanolamine (UCO_TEA). Next, open-cell PUR foams were synthesized by replacing 20, 40, 60, 80 and 100% of the petrochemical polyol with the bio-polyol UCO_DEG or UCO_TEA. It was observed that an increasing bio-polyol content (up to 60%) led to an increase of the closed cell content. However, a further increase in the bio-polyol content up to 100% resulted in foam cell opening. The bio-foams obtained in the experiment had an apparent density of 13–18 kg/m<sup>3</sup>. The coefficient of thermal conductivity was determined at three different average temperatures: 10, 0 and −10 °C. The PUR bio-foams modified with bio-polyol UCO_TEA had lower values of thermal conductivity, regardless of the average temperature (35.99–39.57 mW/m·K) than the foams modified with bio-polyol UCO_DEG (36.95–43.78 mW/m·K). The compressive strength of most of the bio-foams was characterized by a higher value than the compressive strength of the reference material (without bio-polyol). Finally, it was observed that the bio-materials exhibited dimensional stability at 70 °C. |
| first_indexed | 2024-03-10T14:48:27Z |
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| id | doaj.art-13b68137eb464516b1ff8319f4a1ce68 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T14:48:27Z |
| publishDate | 2020-11-01 |
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| series | Materials |
| spelling | doaj.art-13b68137eb464516b1ff8319f4a1ce682023-11-20T21:07:06ZengMDPI AGMaterials1996-19442020-11-011322516110.3390/ma13225161A Pathway toward a New Era of Open-Cell Polyurethane Foams—Influence of Bio-Polyols Derived from Used Cooking Oil on Foams PropertiesMaria Kurańska0Elżbieta Malewska1Krzysztof Polaczek2Aleksander Prociak3Joanna Kubacka4Department of Chemistry and Technology of Polymers, Cracow University of Technology, Warszawska 24, 31-155 Krakow, PolandDepartment of Chemistry and Technology of Polymers, Cracow University of Technology, Warszawska 24, 31-155 Krakow, PolandDepartment of Chemistry and Technology of Polymers, Cracow University of Technology, Warszawska 24, 31-155 Krakow, PolandDepartment of Chemistry and Technology of Polymers, Cracow University of Technology, Warszawska 24, 31-155 Krakow, PolandDepartment of Chemistry and Technology of Polymers, Cracow University of Technology, Warszawska 24, 31-155 Krakow, PolandIn order to create greener polyurethane (PUR) foams, modified used cooking oils (UCO) were applied as starting resources for the synthesis of bio-polyols. The bio-polyols were produced using transesterification of UCO with diethylene glycol (UCO_DEG) and triethanolamine (UCO_TEA). Next, open-cell PUR foams were synthesized by replacing 20, 40, 60, 80 and 100% of the petrochemical polyol with the bio-polyol UCO_DEG or UCO_TEA. It was observed that an increasing bio-polyol content (up to 60%) led to an increase of the closed cell content. However, a further increase in the bio-polyol content up to 100% resulted in foam cell opening. The bio-foams obtained in the experiment had an apparent density of 13–18 kg/m<sup>3</sup>. The coefficient of thermal conductivity was determined at three different average temperatures: 10, 0 and −10 °C. The PUR bio-foams modified with bio-polyol UCO_TEA had lower values of thermal conductivity, regardless of the average temperature (35.99–39.57 mW/m·K) than the foams modified with bio-polyol UCO_DEG (36.95–43.78 mW/m·K). The compressive strength of most of the bio-foams was characterized by a higher value than the compressive strength of the reference material (without bio-polyol). Finally, it was observed that the bio-materials exhibited dimensional stability at 70 °C.https://www.mdpi.com/1996-1944/13/22/5161green open-cell polyurethane foamsbio-polyolsmodified used cooking oilspray foams |
| spellingShingle | Maria Kurańska Elżbieta Malewska Krzysztof Polaczek Aleksander Prociak Joanna Kubacka A Pathway toward a New Era of Open-Cell Polyurethane Foams—Influence of Bio-Polyols Derived from Used Cooking Oil on Foams Properties Materials green open-cell polyurethane foams bio-polyols modified used cooking oil spray foams |
| title | A Pathway toward a New Era of Open-Cell Polyurethane Foams—Influence of Bio-Polyols Derived from Used Cooking Oil on Foams Properties |
| title_full | A Pathway toward a New Era of Open-Cell Polyurethane Foams—Influence of Bio-Polyols Derived from Used Cooking Oil on Foams Properties |
| title_fullStr | A Pathway toward a New Era of Open-Cell Polyurethane Foams—Influence of Bio-Polyols Derived from Used Cooking Oil on Foams Properties |
| title_full_unstemmed | A Pathway toward a New Era of Open-Cell Polyurethane Foams—Influence of Bio-Polyols Derived from Used Cooking Oil on Foams Properties |
| title_short | A Pathway toward a New Era of Open-Cell Polyurethane Foams—Influence of Bio-Polyols Derived from Used Cooking Oil on Foams Properties |
| title_sort | pathway toward a new era of open cell polyurethane foams influence of bio polyols derived from used cooking oil on foams properties |
| topic | green open-cell polyurethane foams bio-polyols modified used cooking oil spray foams |
| url | https://www.mdpi.com/1996-1944/13/22/5161 |
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