| Oxypropylation of cork and the use of the ensuing polyols in polyurethane formulations. | |
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MedLine Citation:
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PMID: 11866556 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Cork particles, recovered as byproducts of the processing of this natural material, were oxypropylated under pressure and relatively high temperature in the presence of KOH as catalyst. Various parameters were explored in order to assess the most suitable conditions, which led to the almost complete conversion of the solid cork into a viscous polyol. This product was a mixture of oxypropylated cork macromolecules and propylene oxide oligomers, which were thoroughly characterized. The use of these polyols as macromonomers in the synthesis of polyurethane foams gave promising results, thus showing that it should be possible to exploit the residues of this important renewable resource to manufacture original materials. |
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Authors:
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M Evtiouguina; A Barros-Timmons; J J Cruz-Pinto; C Pascoal Neto; M N Belgacem; A Gandini |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Biomacromolecules Volume: 3 ISSN: 1525-7797 ISO Abbreviation: Biomacromolecules Publication Date: 2002 Jan-Feb |
Date Detail:
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Created Date: 2002-02-27 Completed Date: 2002-06-19 Revised Date: 2009-11-19 |
Medline Journal Info:
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Nlm Unique ID: 100892849 Medline TA: Biomacromolecules Country: United States |
Other Details:
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Languages: eng Pagination: 57-62 Citation Subset: IM |
Affiliation:
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Department of Chemistry, University of Aveiro, 3810 Aveiro, Portugal. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Alkenes
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chemistry Magnetic Resonance Spectroscopy Plant Structures / chemistry* Polymers / chemistry*, metabolism* Polyurethanes / chemistry* Spectroscopy, Fourier Transform Infrared |
| Chemical | |
Reg. No./Substance:
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0/Alkenes; 0/Polymers; 0/Polyurethanes; 0/polyol; 115-07-1/propylene; 9009-54-5/polyurethane foam |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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