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Abstract
Samples of nanoparticles containing single and/or multiple chains were prepared by precipitation from dilute solutions of syndiotactic polystyrene (s-PS). Vibrational spectra of the nanoparticles were determined at room temperature and were compared with bulk s-PS. Significant changes in line shape and line width were observed in the spectra of the nanoparticles. Infrared (IR) analysis of the nanoparticles also indicated a faster crystallization rate and higher crystallinity than for the bulk sample.
ACKNOWLEDGMENT
This work was supported by National Key Projects for Fundamental Research, “Macromolecular Condensed State,’ of the State Science and Technology Commission of China and was partially supported by the NSFC. We are grateful to Prof. Bernhard Wunderlich and Prof. Renyuan Qian for valuable discussions. We also thank Professor Phillip H. Geil for his comments and revision of the manuscript.