RSM applied to PS/SBRr/SEBS Blends. Proper tool for maximized properties

Reusing rubber waste from footwear industry emerges as great practise in order to reduce environmental damage on natural ecosystems. Based on this target, the present work aimed to apply the response surface methodology (RSM) to polystyrene/styrene-butadiene PS/SBRr blends compatibilized with styren...

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Bibliographic Details
Published in:Materials research express 2020-01, Vol.7 (1), p.15327
Main Authors: Luna, Carlos Bruno Barreto, Ferreira, Eduardo da Silva Barbosa, Siqueira, Danilo Diniz, Araújo, Edcleide Maria, Wellen, Renate Maria Ramos
Format: Article
Language:English
Subjects:
blending planning
Butadiene
Elongation
Extrusion molding
Impact strength
Injection molding
Morphology
Plastic deformation
Polymer blends
Polystyrene resins
Response surface methodology
RSM
SBRr
SEBS
Styrenes
Tensile strength
Thermomechanical properties
Twin screw extruders
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Summary:Reusing rubber waste from footwear industry emerges as great practise in order to reduce environmental damage on natural ecosystems. Based on this target, the present work aimed to apply the response surface methodology (RSM) to polystyrene/styrene-butadiene PS/SBRr blends compatibilized with styrene-ethylene-butylene-styrene (SEBS). A mixture planning was applied to PS/SBRr/SEBS blends in order to investigate mechanical and thermomechanical behaviors as response variables. Scanning electron microscopy (SEM) was used to evaluate the morphology of investigated blends, which were melt extruded in a corrotational twin screw extruder and specimens were injection moulded. High impact strength, toughness, elongation at break and thermal deflection temperature (HDT) were achieved at SEBS rich region (∼10%). At PS rich region, tensile strength, Shore D hardness and Vicat softening temperature (VST) were more expressive. Related to morphological character, blends with 10% SEBS presented the highest interfacial adhesion, with high level of plastic deformation. Gathered results show that depending on the composition, properties significantly change, being RSM a proper tool to preview trends on mechanical and thermomechanical properties. In general, PS/SBRr/SEBS blends may be properly used as packaging and building applications.
ISSN:2053-1591
2053-1591
DOI:10.1088/2053-1591/ab6701