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Chemical resistance evaluation of polystyrene / polypropylene blends : effect of blend compositions and SEBS comtent

Samsudin, Sani Amril and Hassan, Azman and Md. Akil, Munirah and Syed Jamaluddin, Syed Mustafa (2006) Chemical resistance evaluation of polystyrene / polypropylene blends : effect of blend compositions and SEBS comtent. Malaysian Polymer Journal, 1 (1). pp. 11-24. ISSN 1823-7789

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Abstract

The present study investigates the effect of styrene-b-(ethylene-co-butylenes)- b-styrene (SEBS) and blend ratio on the chemical resistance of PS/PP blends. Using a Brabender PL2000 twin-screw extruder, blends of PS rich PS/PP (composition ranging of 90–60 wt % PS) containing different amount of SEBS were prepared and injection moulded to be evaluated for chemical resistance. The results showed that the chemical resistance of PS to acetone and tetrahydrofuran (THF) increased with increasing PP content. The chemical resistance of PS/PP blends increased with increasing SEBS content at relatively lower PP content but decreased with increasing SEBS content at higher PP content. Dynamic mechanical analysis showed that 60/40/25 PS/PP/ SEBS blends had better miscibility than 60/40/5 PS/PP/SEBS blends. However better miscibility did not result in enhanced chemical resistance since SEBS itself was effected by the chemicals

Item Type:Article
Additional Information:open access journal
Uncontrolled Keywords:polystyrene, polypropylene, styrene-b-(ethylene-co-butylenes)-b-styrene,chemical resistance, polymer blends
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Natural Resources Engineering (Formerly known)
ID Code:8105
Deposited By: Ms Zalinda Shuratman
Deposited On:27 Mar 2009 03:34
Last Modified:28 Aug 2012 02:31

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