The role of nanoclay partitioning and fibril formation on dyeability of blend nanocomposite fibres / Ahmad Bigdeli in COLORATION TECHNOLOGY, Vol. 129, N° 4 (08/2013)  

[article]  inCOLORATION TECHNOLOGY > Vol. 129, N° 4 (08/2013) . - p. 289–297 Titre : The role of nanoclay partitioning and fibril formation on dyeability of blend nanocomposite fibres Type de document : texte imprimé Auteurs : Ahmad Bigdeli, Auteur ; Hossein Nazockdast, Auteur ; Abosaeed Rashidi, Auteur ; Mohammad Esmail Yazdanshenas, Auteur Année de publication : 2013 Article en page(s) : p. 289–297 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Argile Composites Compoundage Extrudeuse bi-vis Extrusion filage Fibrillation Matériaux hybrides Microscopie électronique à balayage Microscopie électronique en transmission Nanoparticules Polybutylène téréphtalate Polypropylène Rhéologie Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : The aim of the present work was to study the effect of microstructure and microfibril formation on dyeability of polypropylene/poly(butylene terephthalate)/organoclay blend nanocomposite fibres. The blend nanocomposite samples with the same blend ratio but varying in organoclay content were prepared via melt compounding by using a co-rotating twin screw extruder. The microfibrillar morphology and nanoclay partitioning were studied using scanning electron microscopy and transmission electron microscopy together with rheological results. The presence of nanoclay in the form of tactoids in the polypropylene matrix accelerated the dye sorption but much greater ultimate dye uptake could be achieved for the sample in which the major part of the platelets were preferentially located inside the poly(butylene terephthalate) fibrils. Although increasing the organoclay concentration increased the ultimate dye uptake, it limited the fibril formation at higher organoclay concentration. The utilisation of a compatibiliser was found to have an enhancing effect on ultimate dye uptake. This could be explained in terms of the interfacial role of the compatibiliser in improving microfibril formation as well as partitioning a fraction of nanoclay platelets inside the polypropylene matrix. DOI : 10.1111/cote.12038 En ligne : http://onlinelibrary.wiley.com/doi/10.1111/cote.12038/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19042 [article]

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