Abstract
Several types of styrene monomer derivatives were polymerized in monomer, water, polyoxyethylene alkyl phenyl ether and initiator mixtures at various temperatures to form small particles. Smaller particles were obtained at higher radical generation rates at the phase-inversion temperature (PIT). Large coagula or secondary particles were obtained at temperatures higher than the PIT. The average diameter of the polymer particles obtained via the polymerization of p-methylstyrene and styrene at the PIT was smaller than those of divinylbenzene and 4-t-butylstyrene. Poly(p-methylstyrene) particles, which had an average diameter of 21 nm and a polymer weight fraction of 5%, were prepared.
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Acknowledgements
This study was financially supported by a Grant-in-Aid for Scientific Research, the Ministry of Education, Culture, Sports, Science and Technology, Japan (Grant-in-Aid 20710106). Polyoxyethylene nonyl phenyl ether with an average number of oxyethylene units of approximately 20 (N200) was supplied by Sanyo Chemical Industries, Ltd.
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Suzuki, K., Nishiyama, K., Yamanaka, I. et al. Preparation of 20-nm poly(styrene derivative) particles via polymerization with nonionic surfactant at the phase-inversion temperature. Polym J 44, 1077–1081 (2012). https://doi.org/10.1038/pj.2012.75
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DOI: https://doi.org/10.1038/pj.2012.75
