Morphology and mechanical properties of iPP/silica composites modified with (styrene-b-ethylene-co-butylene-b-styrene) grafted with maleic anhydride (CROSBI ID 210010)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Pustak, Anđela ; Denac, Matjaž ; Leskovac, Mirela ; Švab, Iztok ; Vojko, Musil ; Šmit, Ivan
engleski
Morphology and mechanical properties of iPP/silica composites modified with (styrene-b-ethylene-co-butylene-b-styrene) grafted with maleic anhydride
The effects of different silica grades and elastomer content on interfacial properties, morphology and mechanical properties of polypropylene/silica 96/4 composites modified with added 5, 10, 15, and 20 % of poly(styrene-b-ethylene-co-butylene-b-styrene) grafted with maleic anhydride (SEBS-g-MA) were investigated. The iPP/silica/SEBS-g-MA composites were designed by adding four silica fillers differing in size (nano- vs. micro-) and in surface properties (hydrophilic vs. hydrophobic) and SEBS-g-MA that was used as a proven effective impact modifier and compatibilizer simultaneously. The morphology of every composite was a spectrum of several morphologies rather than one exclusive morphology. Good concordance between observed and predicted morphology indicated that the morphology of a particular composite was controlled primarily by interfacial properties. Tensile and impact properties were influenced primarily by competitive effects of a stiff filler and tough SEBS-g-MA elastomer. Increased impact strength and strain at break designed by adding of SEBS-g-MA indicated a significant overcoming of the elastomeric toughening effect in relation to the filler's stiffening effect.
Polypropylene Composites; Morphology; Interfacial properties; Mechanical properties
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Podaci o izdanju
54 (6)
2015.
647-660
objavljeno
0360-2559
10.1080/03602559.2014.979495
Povezanost rada
Kemija, Kemijsko inženjerstvo