Reversibly thermochromic micro-fibres by coaxial electrospinning

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dc.contributor.authorMalherbe I.
dc.contributor.authorSanderson R.D.
dc.contributor.authorSmit E.
dc.date.accessioned2011-05-15T16:02:16Z
dc.date.available2011-05-15T16:02:16Z
dc.date.issued2010
dc.description.abstractA 'solvent facilitated' coaxial electrospinning process was used to produce reversible narrow temperature gap thermochromic, core-shell fibres. A thermochromic composite composed of crystal violet lactone (the leuco dye), bisphenol A (the developer) and 1-dodecanol (the phase-change solvent) was entrained as core material inside poly(methyl methacrylate) shells. A mutual core and shell solvent (chloroform) was used to obtain low interfacial tension between the core and shell spinning solutions. This enabled room temperature entrainment of the low molecular weight, low viscosity core fluid. In order to minimize the effect of light scattering and subsequently produce fibres with visible colour transitions, the fibres were produced with external diameters of 3-8μm and core diameters of 1.7-5.7μm. In order to produce core-shell fibres with repeated, reversibly thermochromic behaviour and a stable colour developed state, it was necessary to entrain a dye composite that contained an excess developer, essentially making this composite non-thermochromic prior to entrainment. The fibres were analyzed using SEM and DSC. © 2010 Elsevier Ltd.
dc.description.versionArticle
dc.identifier.citationPolymer
dc.identifier.citation51
dc.identifier.citation22
dc.identifier.issn323861
dc.identifier.other10.1016/j.polymer.2010.09.018
dc.identifier.urihttp://hdl.handle.net/10019.1/12392
dc.subject1-dodecanol
dc.subjectBisphenol A
dc.subjectCoaxial electrospinning
dc.subjectCore diameters
dc.subjectCore material
dc.subjectCore-shell
dc.subjectCrystal violet lactone
dc.subjectInterfacial tensions
dc.subjectLow molecular weight
dc.subjectLow viscosity
dc.subjectPhase changes
dc.subjectRoom temperature
dc.subjectSEM
dc.subjectSpinning solution
dc.subjectThermo-chromic
dc.subjectCoremaking
dc.subjectElectrospinning
dc.subjectEsters
dc.subjectOrganic solvents
dc.subjectPhenols
dc.subjectShells (structures)
dc.subjectVat dyes
dc.subjectFibers
dc.titleReversibly thermochromic micro-fibres by coaxial electrospinning
dc.typeArticle
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