期刊
INDUSTRIAL CROPS AND PRODUCTS
卷 44, 期 -, 页码 520-527出版社
ELSEVIER
DOI: 10.1016/j.indcrop.2012.10.002
关键词
Suberin; Cork; Birch outer bark; Cholinium hexanoate ionic liquids
资金
- Fundacao para a Ciencia e a Tecnologia (FCT), Portugal [SFRH/BD/48286/2008, SFRH/BPD/73383/2010]
- Fundacao Calouste Gulbenkian, Portugal [21-95587-B]
- Norway through the EEA [PT015]
- FCT [PEst-OE/EQB/LA0004/2011, Pest-C/CTM/LA0011/2011, PTDC/QUI-QUI/120982/2010]
- National NMR Network [REDE/1517/RMN/2005]
- AFORE (CP-IP) [228589-2]
- Iceland, Liechtenstein
- Fundação para a Ciência e a Tecnologia [SFRH/BD/48286/2008, PTDC/QUI-QUI/120982/2010] Funding Source: FCT
Cholinium hexanoate, a biocompatible and biodegradable ionic liquid, was recently demonstrated to efficiently and selectively extract suberin domains from cork, combining high extraction efficiency with isolation of a partial depolymerised material. In the present paper, we report a comparative study of the characterisation of suberin extracted from birch outer bark and from cork using cholinium hexanoate. It became apparent that both extracted suberin samples showed still a cross-linked nature, i.e. likely to be closely related to in situ suberin. Suberin samples were mainly constituted by oligomeric or polymeric structures in turn essentially composed by long chain hydroxyacids monomers. Their high thermal stability together with the oligomeric/polymeric nature, open new perspectives for suberin use as macromonomers in the development of bio-based polymeric materials. This also contributes for the valorisation of suberin rich agro-forest residues. (C) 2012 Elsevier B.V. All rights reserved.
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