Improved interfacial properties of PA6/DE blends by DE-g-MAH prepared through ultrasound assisted extrusion / W. Bao in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 3 (07/2014)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXIX, N° 3 (07/2014) . - p. 371-378 Titre : Improved interfacial properties of PA6/DE blends by DE-g-MAH prepared through ultrasound assisted extrusion Type de document : texte imprimé Auteurs : W. Bao, Auteur ; Hong Wu, Auteur ; T. Xie, Auteur ; S. Guo, Auteur Année de publication : 2014 Article en page(s) : p. 371-378 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adhésion Alliages polymères Alliages polymères -- propriétés mécaniques Chimie des surfaces Copolymères greffés Elastomères Essais dynamiques Maléique, Acide Matières plastiques -- Extrusion Peroxydes Polyamide 6 Taille des particules Ultrasons Index. décimale : 668.4 Plastiques, vinyles Résumé : In this paper, ultrasound was applied in extrusion reaction processing to graft an Elastomer (DE) with maleic anhydride (MAH), in order to improve the non-polarity of DE. Two types of DE-g-MAH were prepared by different methods and had similar grafting degree about 0.2 % and then they were added into the polyamide-6/elastomer (PA6/DE) blends, respectively. The effect of DE-g-MAH on the interfacial properties of PA6/DE blends was studied. The experimental results showed that, compared to the DE-g-MAH initiated by peroxide, DE-g-MAH initiated by ultrasound had better effect on refining the particle size of the dispersion phase and keeping the stability of the phase in the blends, which could be confirmed through SEM and Molau tests. When 5 % DE-g-MAH initiated by peroxide was added, the particle size of dispersion phase was 3.90 ?m, however, when 5 % DE-g-MAH initiated by ultrasound was added, the particle size of dispersion phase was 2.82 ?m. The results of TGA and mechanical tests showed the improved interfacial interaction and enhanced interfacial adhesion of the blend by adding DE-g-MAH, respectively. Note de contenu : - EXPERIMENTAL : Materials - Samples preparation - Measurement - RESULTS AND DISCUSSION : Fourier Transform Infrared Spectroscopy (FT-IR) of grafted products - Grafting degree - Molau test - Morphology of cryogenically-fractured surfaces of the blends - Thermogravimetric analysis - mechanical properties DOI : 10.3139/217.2816 En ligne : https://drive.google.com/file/d/1XFltYg6VlCzVwuQmpwHkV8CGHXorsV2f/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21735 [article]

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