The PS was dissolved in chloroform prior to addition of TWL (5% (w/v)). The mixture was soaked for 24 hours and stirred at a speed of 800 rpm for 7 hours using a mechanical stirrer. The blends were stirred continuously for 8 hours at a speed of 200 rpm to reduce the formation of bubbles. Solution blend compositions of 100/0, 70/30, 50/50, 30/70and 0/100 were casted on a glass plate and dried for 3 days at 70 °C in an oven. The 70/30 of TWL/PS blend was used to investigate the effect of the compatibilizer. Different loadings (5, 10, 15 and 20 phr) of styrene butadiene (SBR) and
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styrene graft natural rubber (SNR) were applied. The compatibilizer was added after the mixture of TWL and PS was completely dissolved.