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A cellulosic liquid crystal pool for cellulose nanocrystals: structure and molecular dynamics at high shear rates

2015-11Journal article Restricted access
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dc.contributor.authorEcheverria, Coro
dc.contributor.authorAlmeida, Pedro L.
dc.contributor.authorFeio, Gabriel
dc.contributor.authorFigueirinhas, João
dc.contributor.authorGodinho, Maria Helena
dc.date.accessioned2016-03-15T15:26:49Z
dc.date.available2016-03-15T15:26:49Z
dc.date.issued2015-11
dc.description.abstractCellulose and its derivatives, such as hydroxypropylcellulose (HPC) have been studied for a long time but they are still not well understood particularly in liquid crystalline solutions. These systems can be at the origin of networks with properties similar to liquid crystalline (LC) elastomers. The films produced from LC solutions can be manipulated by the action of moisture allowing for instance the development of a soft motor (Geng et al., 2013) driven by humidity. Cellulose nanocrystals (CNC), which combine cellulose properties with the specific characteristics of nanoscale materials, have been mainly studied for their potential as a reinforcing agent. Suspensions of CNC can also self-order originating a liquid-crystalline chiral nematic phases. Considering the liquid crystalline features that both LC-HPC and CNC can acquire, we prepared LC-HPC/CNC solutions with different CNC contents (1,2 and 5 wt.%). The effect of the CNC into the LC-HPC matrix was determined by coupling rheology and NMR spectroscopy - Rheo-NMR a technique tailored to analyse orientational order in sheared systems. (C) 2015 Elsevier Ltd. All rights reserved.pt_PT
dc.identifier.citationECHEVERRIA, Coro; [et al.] - A cellulosic liquid crystal pool for cellulose nanocrystals: Structure and molecular dynamics at high shear rates. European Polymer Journal. ISSN. 0014-3057. Vol. 72 (2015), pp. 72-81pt_PT
dc.identifier.doi10.1016/j.eurpolymj.2015.09.006pt_PT
dc.identifier.issn0014-3057
dc.identifier.issn1873-1945
dc.identifier.urihttp://hdl.handle.net/10400.21/5865
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherPergamon-Elsevier Science LTDpt_PT
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0014305715004565pt_PT
dc.subjectCellulosept_PT
dc.subjectLiquid crystalpt_PT
dc.subjectCellulose nanocrystalspt_PT
dc.subjectRheo-NMRpt_PT
dc.subjectRheologypt_PT
dc.titleA cellulosic liquid crystal pool for cellulose nanocrystals: structure and molecular dynamics at high shear ratespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage81pt_PT
oaire.citation.startPage72pt_PT
oaire.citation.volume72pt_PT
person.familyNameMarques de Almeida
person.familyNameFeio
person.familyNameFigueirinhas
person.familyNameGodinho
person.givenNamePedro
person.givenNameGabriel
person.givenNameJoão
person.givenNameMaria Helena
person.identifier2206212
person.identifier.ciencia-id0218-71B2-2DE0
person.identifier.ciencia-idCB1B-52B5-D425
person.identifier.ciencia-idC316-7B1F-4513
person.identifier.orcid0000-0001-7356-8455
person.identifier.orcid0000-0003-1257-5824
person.identifier.orcid0000-0001-9254-1864
person.identifier.orcid0000-0002-9760-5983
person.identifier.ridB-4356-2009
person.identifier.ridJ-3695-2013
person.identifier.ridA-4278-2013
person.identifier.ridJ-3679-2013
person.identifier.scopus-author-id57190384213
person.identifier.scopus-author-id24484581400
person.identifier.scopus-author-id55909453200
person.identifier.scopus-author-id7005654016
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication429b6d71-328e-42b3-8151-15493de249b8
relation.isAuthorOfPublicationa15cb9fe-ebbc-4450-a85c-77e4680b1967
relation.isAuthorOfPublication8287ac27-3195-4e9d-956f-63e80198f99e
relation.isAuthorOfPublication9e92c2e7-f179-42a4-b284-2b30b769aa0b
relation.isAuthorOfPublication.latestForDiscovery429b6d71-328e-42b3-8151-15493de249b8

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