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dc.contributor.authorSOUZA, N. L. G. D.pt_BR
dc.contributor.authorSALLES, T. F.pt_BR
dc.contributor.authorBRANDAO, H. de M.pt_BR
dc.contributor.authorEDWARDS, H. G. M.pt_BR
dc.contributor.authorOLIVEIRA, L. F. C. dept_BR
dc.date.accessioned2016-02-18T11:11:11Zpt_BR
dc.date.available2016-02-18T11:11:11Zpt_BR
dc.date.created2016-02-18pt_BR
dc.date.issued2015pt_BR
dc.identifier.citationJournal of the Brazilian Chemical Society, v. 26, n. 6, p. 1247-1256, 2015.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1037647pt_BR
dc.descriptionIn this work specimens of chitosan which have been cross-linked covalently and ionically with different oxocarbon and pseudo-oxocarbon anions have been synthesised and characterized using infrared and Raman spectroscopic techniques, solid state 13C nuclear magnetic resonance (NMR) and by thermogravimetry. According to the spectroscopic and thermal results, ionically crosslinked chitosans are obtained with squarate, croconate and rhodizonate ions as crosslinking agents, whereas covalently crosslinked chitosan can be obtained when squaric acid is used as the crosslinking agent; the same products are not observed when the pseudo-oxocarbon anion croconate violet is used, which can be attributed to the low basic strength of the crosslinking species.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectOxocarbonpt_BR
dc.subjectInfrared and Ramanpt_BR
dc.subjectSolid state 13C NMRpt_BR
dc.titleSynthesis, Vibrational Spectroscopic and Thermal Properties of Oxocarbon Cross - Linked Chitosan.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2016-03-14T11:11:11Zpt_BR
dc.subject.nalthesauruscrosslinkingpt_BR
dc.subject.nalthesauruschitosanpt_BR
riaa.ainfo.id1037647pt_BR
riaa.ainfo.lastupdate2016-03-14pt_BR
dc.contributor.institutionNelson L. G. D. Souza, UFJF; Tamyres F. Salles, UFJF; HUMBERTO DE MELLO BRANDAO, CNPGL; Howell G. M. Edwards, University of Bradford; Luiz F. C. de Oliveira, UFJF.pt_BR
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