Preparation and characterization of the bacterial cellulose/polyurethane nanocomposites

Página do item simplificado
dc.contributor.authorPinto, Elaine R.P. [UNESP]
dc.contributor.authorBarud, Hernane S. [UNESP]
dc.contributor.authorPolito, Wagner Luiz
dc.contributor.authorRibeiro, Sidney J.L. [UNESP]
dc.contributor.authorMessaddeq, Younes [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-27T11:28:26Z
dc.date.available2014-05-27T11:28:26Z
dc.date.issued2013-02-12
dc.description.abstractNew nanocomposites based on bacterial cellulose nanofibers (BCN) and polyurethane (PU) prepolymer were prepared and characterized by SEM, FT-IR, XRD, and TG/DTG analyses. An improvement of the interface reaction between the BCN and the PU prepolymer was obtained by a solvent exchange process. FT-IR results showed the main urethane band at 2,270 cm-1 to PU prepolymer; however, in nanocomposites new bands appear as disubstituted urea at 1,650 and 1,550 cm-1. In addition, the observed decrease in the intensity of the hydroxyl band (3,500 cm-1) suggests an interaction between BCN hydroxyls and NCO-free groups. The nanocomposites presented a non-crystalline character, significant thermal stability (up to 230 °C) and low water absorption when compared to pristine BCN. © 2013 Akadémiai Kiadó, Budapest, Hungary.en
dc.description.affiliationChemistry Institute São Paulo State University-UNESP, São Paulo
dc.description.affiliationChemistry Institute São Paulo University-USP, São Carlos
dc.description.affiliationUnespChemistry Institute São Paulo State University-UNESP, São Paulo
dc.format.extent1-7
dc.identifierhttp://dx.doi.org/10.1007/s10973-013-3001-y
dc.identifier.citationJournal of Thermal Analysis and Calorimetry, p. 1-7.
dc.identifier.doi10.1007/s10973-013-3001-y
dc.identifier.issn1388-6150
dc.identifier.issn1572-8943
dc.identifier.lattes2998503841917815
dc.identifier.scopus2-s2.0-84873436815
dc.identifier.urihttp://hdl.handle.net/11449/74586
dc.identifier.wosWOS:000325704200010
dc.language.isoeng
dc.relation.ispartofJournal of Thermal Analysis and Calorimetry
dc.relation.ispartofjcr2.209
dc.relation.ispartofsjr0,587
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectBacterial cellulose nanofibers
dc.subjectNanocomposites
dc.subjectPolyurethane prepolymer
dc.titlePreparation and characterization of the bacterial cellulose/polyurethane nanocompositesen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights
unesp.author.lattes2998503841917815
unesp.author.orcid0000-0003-3286-9440[4]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

Arquivos

Coleções

Artigos - Química Inorgânica - IQ