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

Soulis, S; Simitzis, J

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