Cellulose nanocomposites with nanofibres isolated from pineapple leaf fibers for medical applications

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dc.contributor.authorCherian, Bibin Mathew [UNESP]
dc.contributor.authorLeão, Alcides Lopes [UNESP]
dc.contributor.authorde Souza, Sivoney Ferreira
dc.contributor.authorManzine Costa, Ligia Maria
dc.contributor.authorde Olyveira, Gabriel Molina
dc.contributor.authorKottaisamy, M.
dc.contributor.authorNagarajan, E. R.
dc.contributor.authorThomas, Sabu
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal do ABC (UFABC)
dc.contributor.institutionThiagarajar Coll Engn
dc.contributor.institutionKalasalingam Univ
dc.contributor.institutionMahatma Gandhi Univ
dc.date.accessioned2014-05-20T13:19:28Z
dc.date.available2014-05-20T13:19:28Z
dc.date.issued2011-10-15
dc.description.abstractNanocellulose is the crystalline domains obtained from renewable cellulosic sources, used to increase mechanical properties and biodegrability in polymer composites. This work has been to study how high pressure defibrillation and chemical purification affect the PALF fibre morphology from micro to nanoscale. Microscopy techniques and X-ray diffraction were used to study the structure and properties of the prepared nanofibers and composites. Microscopy studies showed that the used individualization processes lead to a unique morphology of interconnected web-like structure of PALF fibers. The produced nanofibers were bundles of cellulose fibers of widths ranging between 5 and 15 nm and estimated lengths of several micrometers. Percentage yield and aspect ratio of the nanofiber obtained by this technique is found to be very high in comparison with other conventional methods. The nanocomposites were prepared by means of compression moulding, by stacking the nanocellulose fibre mats between polyurethane films. The results showed that the nanofibrils reinforced the polyurethane efficiently. The addition of 5 wt% of cellulose nanofibrils to PU increased the strength nearly 300% and the stiffness by 2600%. The developed composites were utilized to fabricate various versatile medical implants. (C) 2011 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUniv Estadual Paulista, São Paulo State Univ, Dept Nat Resources, BR-18610307 São Paulo, Brazil
dc.description.affiliationUniversidade Federal do ABC (UFABC), Dept Nanosci & Adv Mat, BR-09210170 São Paulo, Brazil
dc.description.affiliationThiagarajar Coll Engn, Dept Chem, Madurai 625015, Tamil Nadu, India
dc.description.affiliationKalasalingam Univ, Ctr Nanotechnol, Virudunagar 626190, Tamil Nadu, India
dc.description.affiliationMahatma Gandhi Univ, Ctr Nanosci & Nanotechnol, Kottayam 686560, Kerala, India
dc.description.affiliationUnespUniv Estadual Paulista, São Paulo State Univ, Dept Nat Resources, BR-18610307 São Paulo, Brazil
dc.format.extent1790-1798
dc.identifierhttp://dx.doi.org/10.1016/j.carbpol.2011.07.009
dc.identifier.citationCarbohydrate Polymers. Oxford: Elsevier B.V., v. 86, n. 4, p. 1790-1798, 2011.
dc.identifier.doi10.1016/j.carbpol.2011.07.009
dc.identifier.issn0144-8617
dc.identifier.urihttp://hdl.handle.net/11449/5132
dc.identifier.wosWOS:000294941100049
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofCarbohydrate Polymers
dc.relation.ispartofjcr5.158
dc.relation.ispartofsjr1,428
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectPineapple leaf fibre (PALF)en
dc.subjectCellulose Nanofibresen
dc.subjectPolyurethaneen
dc.subjectNanocompositesen
dc.subjectMedical applicationen
dc.titleCellulose nanocomposites with nanofibres isolated from pineapple leaf fibers for medical applicationsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes9554636745216452[2]
unesp.author.orcid0000-0003-4381-8104[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatupt
unesp.departmentEngenharia Rural - FCApt

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Botucatu - FCA - Faculdade de Ciências Agronômicas