Improvement of organoclay dispersion into polystyrene-based nanocomposites by incorporation of SBS and maleic anhydride-grafted SBS

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dc.authoridDIKE, ALI SINAN/0000-0001-6214-6070
dc.contributor.authorDike, Ali Sinan
dc.contributor.authorYilmazer, Ulku
dc.date.accessioned2025-01-06T17:44:03Z
dc.date.available2025-01-06T17:44:03Z
dc.date.issued2020
dc.description.abstractIn this study, organoclay-containing polystyrene (PS)-based nanocomposites were fabricated by extrusion in the presence of thermoplastic elastomer modifiers. Styrene-butadiene-styrene (SBS) rubber was used as the elastomeric compatibilizer and maleic anhydride (MA) was grafted onto SBS rubber at different ratios. Grafting was made via melt blending. Cloisite (R) 30B was used as the organoclay and it was added to PS and PS/SBS blends using a corotating twin-screw extruder, followed by injection molding. Clay loading was kept constant as 2 wt%, and the elastomer content was varied between 0 and 40 wt% throughout the study. MA grafted SBS enhanced the intercalation/exfoliation of clay layers resulting in higher tensile strength, modulus, elongation at break, and impact strength with respect to neat PS. Composites containing 15 wt% MA grafted SBS displayed the optimum average domain size resulting in the high impact strength without deteriorating the tensile strength and modulus values. Elastomer addition increased the glass transition temperature of the samples due to branching or cross-linking during extrusion. PS and PS/SBS exhibited similar melt flow index values with their organoclay-containing composites. MA acted as a plasticizer and decreased viscosity. Scanning electron microscopy study indicated that dispersion of clay layers was observed at the PS-SBS interphase and also in the elastomer phase. Intercalated and exfoliated structures of organoclay layers were confirmed by X-ray diffraction and transmission electron microscopy analyses.
dc.description.sponsorshipMiddle East Technical University Scientific Research Unit [BAP-03-04-2010-01]
dc.description.sponsorshipThe author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This study is supported by Middle East Technical University Scientific Research Unit under grant no. BAP-03-04-2010-01
dc.identifier.doi10.1177/0892705719882998
dc.identifier.endpage574
dc.identifier.issn0892-7057
dc.identifier.issn1530-7980
dc.identifier.issue4
dc.identifier.scopus2-s2.0-85074731511
dc.identifier.scopusqualityQ1
dc.identifier.startpage554
dc.identifier.urihttps://doi.org/10.1177/0892705719882998
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2902
dc.identifier.volume33
dc.identifier.wosWOS:000495319800001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSage Publications Ltd
dc.relation.ispartofJournal of Thermoplastic Composite Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241211
dc.subjectPolystyrene
dc.subjectnanocomposites
dc.subjectextrusion
dc.subjectpolymer blends
dc.subjectaromatic elastomer
dc.subjectorganoclay
dc.titleImprovement of organoclay dispersion into polystyrene-based nanocomposites by incorporation of SBS and maleic anhydride-grafted SBS
dc.typeArticle

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