Synergistic Strengthening and Toughening of PS/LDPE Blends with Nano-CaCO3

Wei Hua Luo; Bin Bin Zou; Xing Xing Liu

doi:10.4028/www.scientific.net/AMR.287-290.1574

Paper Titles

Evaluation of Li-Mg-B Alloy Anode for Intermediate Temperature Lithium Batteries
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Study of Dislocation Generation and Growth Orientations in Upgraded Metallurgical Grade Multicrystalline Silicon
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Research on Lithium Ion Battery Material LiCoO₂ for Hybrid Supercapacitor
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The Interaction between a Screw Dipole in Matrix and an Elliptical Inhomogeneity Containing a Confocal Crack
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Synergistic Strengthening and Toughening of PS/LDPE Blends with Nano-CaCO₃
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Photocatalytic Degradation of Gaseous Acetone by a Self-Prepared Nano-Sized Composite TiO₂/In₂O₃/SnO₂ Film Photocatalyst
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Dehydration of Fructose to 5-Hydroxymethylfurfural Catalyzed by Alkaline Ionic Liquid
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Synthesis of Sn⁴⁺ Doped TiO₂ Nano Powder and its Photocatalytic Activity
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Studies on Alkali Lignin Degradation by Phomolybdic Acid Using Ultrasonic Method
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Synergistic Strengthening and Toughening of PS/LDPE Blends with Nano-CaCO₃

Abstract:

Polystyrene(PS)/Low density Polyethylene(LDPE) blends were prepared in a twin-roll mill. Effects of the addition of nano-CaCO₃, LDPE-g-MA, and the mixing procedure on the morphology, crystallization behavior, rheological and mechanical properties of the blends were investigated by scanning electron microscopy (SEM), differential scanning calorimetry (DSC), Advanced Rheometric Expansion System (ARES) and mechanical testing. The results show that the addition of nano-CaCO₃ reduces the droplet size and the crystallinity of LDPE dispersed phase, hence increases both the tensile and impact strength of the blends. The two-step mixing procedure in which LDPE and nano-CaCO₃ were premixed prior to mixing with PS, facilitates forming encapsuled morphology, leading to a lower viscosity and a higher tensile strength of the blends.