2000 Volume 56 Issue 6 Pages 266-271
The complex formability between the syndiotactic polystyrene (SPS) and the aromatic hydrocarbons (benzene, toluene, p-xylene, m-xylene, and mesitylene) were investigated by means of FT-IR, DSC, and TG methods. It was able to observe the increase of the TTGG conformation contents in SPS-aromatic hydrocarbon solutions during the complex formation by quenching, from ATR-FT-IR spectroscopy. The order of the TTGG conformation content in the SPS-aromatic hydrocarbon systems was agreement with the amount of the complex in these systems estimated from TG measurements. The formation rates and the amounts of the TTGG conformation in the SPS-toluene and p-xylene systems were relatively larger than those in other systems. It was impossible that the difference of the complex formability in SPS-aromatic hydrocarbon systems was interpreted only from the interaction parameter between SPS and the aromatic hydrocarbons. On the other hand, the desorption temperatures of the guest molecules from the complexes in the SPS-aromatic hydrocarbon systems, i.e. the thermal stability of the complex were also different among them. It was concluded that toluene and p-xylene were relatively good for the complex formability with SPS from viewpoint of the formation rate and amounts, and thermal stability.
