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dc.contributor.CRUESPUNIVERSIDADE DE ESTADUAL DE CAMPINASpt_BR
dc.typeArtigo de periódicopt_BR
dc.titlePyridine Derivative Covalently Bonded On Chitosan Pendant Chains For Textile Dye Removal.pt_BR
dc.contributor.authorOliveira, Cintia Spt_BR
dc.contributor.authorAiroldi, Claudiopt_BR
unicamp.authorCintia S Oliveira, Institute of Chemistry, University of Campinas, UNICAMP, P.O. Box 6154, 13084-971 Campinas, SP, Brazil.pt_BR
unicamp.authorClaudio Airoldi, Institute of Chemistry, University of Campinas, UNICAMP, P.O. Box 6154, 13084-971 Campinas, SP, Brazil. Electronic address: airoldi@iqm.unicamp.br.pt_BR
dc.subjectBiopolymerspt_BR
dc.subjectChitosanpt_BR
dc.subjectColoring Agentspt_BR
dc.subjectKineticspt_BR
dc.subjectMagnetic Resonance Spectroscopypt_BR
dc.subjectPyridinespt_BR
dc.subjectSpectrophotometry, Infraredpt_BR
dc.subjectTextilespt_BR
dc.subjectThermogravimetrypt_BR
dc.subjectX-ray Diffractionpt_BR
dc.subjectChitosanpt_BR
dc.subjectDyept_BR
dc.subjectNon-linear Regressionpt_BR
dc.subjectPyridine Derivativept_BR
dc.subjectSorptionpt_BR
dc.description.abstractChitosan was chemically modified through a sequence of four reactions with immobilized 2-aminomethylpyridine at the final stage, after prior protection of amino group with benzaldehyde. The characterized biopolymers containing free amino and hydroxyl active centers on the biopolymeric structure and pyridinic nitrogen on pendant chains showed combined hydrophobic properties that can potentially favor interactions. Reactive Yellow GR and Blue RN dyes gave the maximum sorption capacities of 2.13 and 1.61 mmol g(-1), which were performed as functions of contact time, concentration and dye structure. However, biopolymer/dye interactions are governed by effective hydrogen bond and van der Waals forces for such structural adjustments. The data obtained from the concentration isotherm were applied to non-linear regressions of the Langmuir, the Freundlich and the Sips models, with the best fit to the latter model. The kinetic data was fitted to non-linear regression of pseudo-second-order, indicating that the sorption phenomena are most likely to be controlled by chemisorption process.en
dc.relation.ispartofCarbohydrate Polymerspt_BR
dc.relation.ispartofabbreviationCarbohydr Polympt_BR
dc.date.issued2014-Febpt_BR
dc.identifier.citationCarbohydrate Polymers. v. 102, p. 38-46, 2014-Feb.pt_BR
dc.language.isoengpt_BR
dc.description.volume102pt_BR
dc.description.firstpage38-46pt_BR
dc.rightsfechadopt_BR
dc.rights.holderCopyright © 2013. Published by Elsevier Ltd.pt_BR
dc.sourcePubMedpt_BR
dc.identifier.issn1879-1344pt_BR
dc.identifier.doi10.1016/j.carbpol.2013.10.075pt_BR
dc.identifier.urlhttp://www.ncbi.nlm.nih.gov/pubmed/24507253pt_BR
dc.date.available2015-11-27T13:41:53Z-
dc.date.accessioned2015-11-27T13:41:53Z-
dc.description.provenanceMade available in DSpace on 2015-11-27T13:41:53Z (GMT). No. of bitstreams: 1 pmed_24507253.pdf: 1005823 bytes, checksum: ca491dfd17feaa206c7280de324a909d (MD5) Previous issue date: 2014en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/201125-
dc.identifier.idPubmed24507253pt_BR
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