Hemp seed oil and oilseed radish oil as new sources of raw materials for the synthesis of bio-polyols for open-cell polyurethane foams
Authors:
- Krzysztof Polaczek,
- Maria Kurańska
Abstract
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/m3, thermal conductivity of <39 mW/m∙K, open cell contents of >97% and high water vapour permeability.
- Record ID
- CUT1a32c38237474a40ab1bcbfc979d665d
- Publication categories
- ;
- Author
- Journal series
- Materials, ISSN , e-ISSN 1996-1944, Biweekly
- Issue year
- 2022
- Vol
- 15
- No
- 24
- Pages
- [1-16]
- Article number
- 8891
- Other elements of collation
- fot.; rys.; tab.; wykr.; Bibliografia (na s.) - 15-16; Bibliografia (liczba pozycji) - 50; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 15, Iss. 24
- Substantive notes
- Special Issue: Novel Resin Composites and Biomaterials
- Keywords in English
- open-cell foam, PUR, polyurethane, bio-polyol, hemp seed oil, used cooking oil, oilseed radish oil, rapeseed oil, epoxidation
- ASJC Classification
- DOI
- DOI:10.3390/ma15248891 Opening in a new tab
- URL
- https://www.mdpi.com/1996-1944/15/24/8891 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 140
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT1a32c38237474a40ab1bcbfc979d665d/
- URN
urn:pkr-prod:CUT1a32c38237474a40ab1bcbfc979d665d
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.