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From cellulosic based liquid crystalline sheared solutions to 1D and 2D soft materials

2014-06-18Journal article Open access
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dc.contributor.authorGodinho, Maria Helena
dc.contributor.authorAlmeida, Pedro L.
dc.contributor.authorFigueirinhas, João
dc.date.accessioned2020-11-11T11:12:16Z
dc.date.available2020-11-11T11:12:16Z
dc.date.issued2014-06-18
dc.description.abstractLiquid crystalline cellulosic-based solutions described by distinctive properties are at the origin of different kinds of multifunctional materials with unique characteristics. These solutions can form chiral nematic phases at rest, with tuneable photonic behavior, and exhibit a complex behavior associated with the onset of a network of director field defects under shear. Techniques, such as Nuclear Magnetic Resonance (NMR), Rheology coupled with NMR (Rheo-NMR), rheology, optical methods, Magnetic Resonance Imaging (MRI), Wide Angle X-rays Scattering (WAXS), were extensively used to enlighten the liquid crystalline characteristics of these cellulosic solutions. Cellulosic films produced by shear casting and fibers by electrospinning, from these liquid crystalline solutions, have regained wider attention due to recognition of their innovative properties associated to their biocompatibility. Electrospun membranes composed by helical and spiral shape fibers allow the achievement of large surface areas, leading to the improvement of the performance of this kind of systems. The moisture response, light modulated, wettability and the capability of orienting protein and cellulose crystals, opened a wide range of new applications to the shear casted films. Characterization by NMR, X-rays, tensile tests, AFM, and optical methods allowed detailed characterization of those soft cellulosic materials. In this work, special attention will be given to recent developments, including, among others, a moisture driven cellulosic motor and electro-optical devices.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGODINHO, Maria Helena; ALMEIDA, Pedro Lúcio; FIGUEIRINHAS, João Luís – From cellulosic based liquid crystalline sheared solutions to 1D and 2D soft materials. Materials. ISSN 1996-1944. Vol. 7, N.º 6 (2014), pp. 4601-4627pt_PT
dc.identifier.doi10.3390/ma7064601pt_PT
dc.identifier.issn1996-1944
dc.identifier.urihttp://hdl.handle.net/10400.21/12371
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationPEst-OE/FIS/UI0261/2011 - FCTpt_PT
dc.relationPEst-C/CTM/LA0025/2013-14 - FCTpt_PT
dc.subjectCellulose-based liquid crystalspt_PT
dc.subjectFilmspt_PT
dc.subjectFiberspt_PT
dc.subjectNuclear Magnetic Resonance (NMR)pt_PT
dc.subjectElectro-optical characteristicspt_PT
dc.titleFrom cellulosic based liquid crystalline sheared solutions to 1D and 2D soft materialspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FCTM-POL%2F1484%2F2012/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FFIS%2F110132%2F2009/PT
oaire.citation.endPage4627pt_PT
oaire.citation.issue6pt_PT
oaire.citation.startPage4601pt_PT
oaire.citation.titleMaterialspt_PT
oaire.citation.volume7pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStream3599-PPCDT
person.familyNameGodinho
person.familyNameMarques de Almeida
person.familyNameFigueirinhas
person.givenNameMaria Helena
person.givenNamePedro
person.givenNameJoão
person.identifier2206212
person.identifier.ciencia-idC316-7B1F-4513
person.identifier.ciencia-id0218-71B2-2DE0
person.identifier.ciencia-idCB1B-52B5-D425
person.identifier.orcid0000-0002-9760-5983
person.identifier.orcid0000-0001-7356-8455
person.identifier.orcid0000-0001-9254-1864
person.identifier.ridJ-3679-2013
person.identifier.ridB-4356-2009
person.identifier.ridA-4278-2013
person.identifier.scopus-author-id7005654016
person.identifier.scopus-author-id57190384213
person.identifier.scopus-author-id55909453200
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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