The effects of a compatibiliser on processing, tensile properties and morphology of polystyrene (PS)/styrene–butadiene rubber (SBR)/wollastonite composites

• Published in: Polymers & polymer composites 2018-10, Vol.26 (8-9), p.454-460
• Main Authors: Abdul Karim, Ahmad Fikri, Ismail, Hanafi
• Format: Article
• Language: English
• Subjects: Anhydrides; Authorship; Butadiene; Elastomers; Elongation; Fracture surfaces; Impact strength; Impact tests; Maleic anhydride; Mechanical properties; Modulus of elasticity; Morphology; Polymer matrix composites; Polymers; Polystyrene resins; Rubber; Scanning electron microscopy; Styrenes; Tensile properties; Tensile strength; Torque; Wollastonite
• ISSN: 0967-3911; 1478-2391
• DOI: 10.1177/0967391118809436

Thermoplastic elastomer composites of polystyrene (PS) blended with styrene–butadiene rubber (SBR)–filled wollastonite were prepared using a laboratory scale internal mixer. The compatibiliser used in this study was maleic anhydride (MAH). The torque developments, morphology, and mechanical properties such as tensile strength, elongation at break, Young’s modulus and impact strength were studied. PS/SBR/wollastonite composites with the addition of MAH had higher torque than PS/SBR/wollastonite composites without MAH. Tensile strength, impact strength and elongation at break were reduced by increasing filler loading, both for composites with and without MAH. Composites with MAH had higher tensile strength but lower impact strength and elongation at break as compared with composites without MAH. The Young’s modulus increased with the wollastonite loading, whereas at a similar wollastonite loading, composites with MAH exhibited higher values of Young’s modulus than composites without MAH. Scanning electron microscopy on fracture surfaces showed better filler–matrix adhesion for composites with MAH.