PREPARATION AND CHARACTERIZATION OF TERNARY BLEND POLYSTYRENE, ACRYLONITRILE BUTADIENE STYRENE AND CaCO3

plastic engineering

Polystyrene, acrylonitrile butadiene styrene and calcium carbonate blend was examined in this paper. Mechanical properties and thermal properties of polymers depend on a lot of parameters: properties, melt mixing, processing parameters. In this work, mainly devoted to polymer-filler interactions. The tensile strength, impact strength, differential scanning calorymetry (DSC) , melt flow index(MFI) characterization was studied in this paper. Polystyrene (PS), acrylonitrile butadiene styrene (ABS) blend was prepared through melt mixing by adding compatibilizer polystyrene grafted maleic anhydride (PS-g-MA). This blend is prepared in Twin Screw Extruder. Then calcium carbonate was added in this blend to analyze the change in properties. PS, ABS and calcium carbonate was added in different composition. It was shown from the experimental results that thermal and mechanical properties were improved as CaCO3 added. Viscosity of the blends was examined by MFI tester. DSC graphs of different compositions shows glass transition temperature. 5 wt% of calcium carbonate was showing good mechanical and thermal properties compare to other compositions. Impact strength was increasing by adding ABS because butadiene chains were attracting with PS chains. Water absorbing power of PS/ABS blend was very low. T he final result shows that the impact strength was increasing. Calcium carbonate is used to provide strength to the blend. This blend can be used in various automobile applications due to high impact strength. DSC shows good miscibility of blend of polystyrene and ABS.

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