Syndiotactic polystyrene /clay

Tseng, C. R., H. Y. Lee, and F. C. Chang. 2001. Crystallization kinetics and crystaUization behavior of syndiotactic polystyrene/clay nanocomposites. Journal of Polymer Science Part B Polymer Physics 39 (17) (September 1) 2097-2107. doi 10.1002/polb.ll84. http //doi.wiley.eom/l0.1002/polb. 1184. 

Tseng CR, Wu JY, Lee HY, Chang PC. Preparation and crystallization behavior of syndiotactic polystyrene-clay nanocomposites. Polymer 2001 42 10063-10070. 

Nanocomposites of syndiotactic polystyrene (sPS) employing MMT-hexadecyltributylphosphonium [40, 41] and high-impact polystyrene (H1PS)/MMT-hexadecyltriphenylphosphonium [42] were prepared by melt-blending and in situ coordination-insertion polymerization. Partially exfoliated or intercalated materials were obtained in all cases, and a decrease of crystallinity of sPS was observed. However, the presence of clay did not have a strong influence on the sPS thermal transitions. Thermal decomposition of the material was slowed and mechanieal properties were improved in the presence of low organoclay content. Intercalated HIPS nanocomposites were obtained, with improved thermal and flame retardant properties compared to pure HIPS (Figure 3.8). 

Park, C. L, Kim, M. H., Park, O. O. Effect of heat treatment on the microstructural change of syndiotactic polystyrene/poly(styrene-co-vinyloxazolin)/clay nanocomposite. Polymer, 45,1267-1273 (2004). 

Tseng et investigated the effects of montmorillonite on the crystallization kinetics of syndiotactic polystyrene (s-PS) with isothermal differential scanning calorimetry analyses. The clay was dispersed into the s-PS matrix via melt... 

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