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Thermomechanical behaviour of poly[acrylonitrile-co-(methyl acrylate)] fibres oxidatively treated at temperatures up to 180°C

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dc.contributor.author Soulis, S en
dc.contributor.author Simitzis, J en
dc.date.accessioned 2014-03-01T01:23:12Z
dc.date.available 2014-03-01T01:23:12Z
dc.date.issued 2005 en
dc.identifier.issn 09598103 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/16869
dc.subject Fibre shrinkage en
dc.subject Fibres en
dc.subject Oxidative thermal treatment en
dc.subject Polyacrylonitrile en
dc.subject.other Carbon fibers en
dc.subject.other Fourier transform infrared spectroscopy en
dc.subject.other Heat treatment en
dc.subject.other Low temperature effects en
dc.subject.other Macromolecules en
dc.subject.other Nuclear magnetic resonance spectroscopy en
dc.subject.other Oxidation en
dc.subject.other Polyacrylonitriles en
dc.subject.other Tensile strength en
dc.subject.other Thermogravimetric analysis en
dc.subject.other Thermomechanical treatment en
dc.subject.other Ultraviolet spectroscopy en
dc.subject.other Fibre shrinkage en
dc.subject.other Macromolecular backbone en
dc.subject.other Oxidative thermal treatment en
dc.subject.other Polymethyl methacrylates en
dc.subject.other fiber length en
dc.subject.other oxidation en
dc.subject.other polyacrylonitrile en
dc.title Thermomechanical behaviour of poly[acrylonitrile-co-(methyl acrylate)] fibres oxidatively treated at temperatures up to 180°C en
heal.type journalArticle en
heal.identifier.primary 10.1002/pi.1871 en
heal.identifier.secondary http://dx.doi.org/10.1002/pi.1871 en
heal.publicationDate 2005 en
heal.abstract PAN fibres, consisting of poly[acrylonitrile-co-(methyl acrylate)], were oxidatively heat treated at low temperatures (up to 180°C), during which the basic macromolecular backbone was not cyclized. The change of length of the fibres was determined under various treatment conditions (ie temperature, time, stress applied). Prolonged heat treatment resulted in lower tensile strength of the fibres. The pristine and treated fibres were characterized by Fourier-transform infrared (FTIR), NMR and UV-visible spectroscopy and by TGA, and the results were used for representing the different regions according to chemical aspects in a plot of temperature versus time; this is very important for the whole treatment process. A shrinkage model was proposed, having both scientific and technical importance. The change in activation volume of shrinkage of fibres with temperature, calculated from this model, is indicative of the physical transitions taking place at the molecular scale. © 2005 Society of Chemical Industry. en
heal.journalName Polymer International en
dc.identifier.doi 10.1002/pi.1871 en
dc.identifier.volume 54 en
dc.identifier.issue 11 en
dc.identifier.spage 1474 en
dc.identifier.epage 1483 en


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