Synthesis of refractive star‐shaped polysulfide by anionic polymerization of phenoxy propylene sulfide using an initiating system consisting of trifunctional thiol derived from five‐membered cyclic dithiocarbonate and amine |
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| Authors: | Mitsuhiro Hirata Bungo Ochiai Takeshi Endo |
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| Institution: | 1. Yamagata Research Institute of Technology, 2‐2‐1 Matsuei, Yamagata, Yamagata 990‐2473, Japan;2. Department of Material Science and Energy Engineering, Graduate School of Science and Engineering, Yamagata University, 4‐13‐16 Jonan, Yonezawa, Yamagata 992‐8510, Japan;3. Molecular Engineering Institute, Kinki University, 11‐6 Kayanomori, Iizuka, Fukuoka 814‐0193, Japan |
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| Abstract: | Star‐shaped poly(phenoxy propylene sulfide) poly (PPS)] were synthesized by anionic polymerization using a trifunctional initiator ( I 1) derived from a trifunctional five‐membered cyclic dithiocarbonate and benzyl amine. Conditions for the anionic polymerization of PPS were optimized to obtain polymers with desired Mns and narrow Mw/Mns. The best catalyst and solvent were DBU and DMF, respectively. The star‐shaped structure of the resulting star poly(PPS) was supported by SEC analysis. The refractive indexes (nD) of the star poly (PPS) were relatively high (>1.64). © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 525–531, 2010 |
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| Keywords: | a five‐membered cyclic dithiocarbonate anionic polymerization refractive index star polymer thiirane |
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