Document Detail


Oxypropylation of cork and the use of the ensuing polyols in polyurethane formulations.
MedLine Citation:
PMID:  11866556     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
M Evtiouguina; A Barros-Timmons; J J Cruz-Pinto; C Pascoal Neto; M N Belgacem; A Gandini
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Biomacromolecules     Volume:  3     ISSN:  1525-7797     ISO Abbreviation:  Biomacromolecules     Publication Date:    2002 Jan-Feb
Date Detail:
Created Date:  2002-02-27     Completed Date:  2002-06-19     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  100892849     Medline TA:  Biomacromolecules     Country:  United States    
Other Details:
Languages:  eng     Pagination:  57-62     Citation Subset:  IM    
Affiliation:
Department of Chemistry, University of Aveiro, 3810 Aveiro, Portugal.
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MeSH Terms
Descriptor/Qualifier:
Alkenes / chemistry
Magnetic Resonance Spectroscopy
Plant Structures / chemistry*
Polymers / chemistry*,  metabolism*
Polyurethanes / chemistry*
Spectroscopy, Fourier Transform Infrared
Chemical
Reg. No./Substance:
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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