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Living anionic polymerization of methyl methacrylate controlled by metal-free phosphazene catalyst as observed by small-angle neutron scattering, gel permeation chromatography and UV-visible spectroscopy

Nobuyoshi Miyamoto,Yoshihisa Inoue, Satoshi Koizumia and Takeji Hashimotoa- Advanced Science Research Center, Japan Atomic Energy Agency
Phosphazene (PZN) catalyst, PZN catalyst coexisting with a co-catalyst 1-hydroxycyclohexyl phenyl ketone and polymethylmethacrylate (PMMA) have been observed for the first time by small-angle neutron scattering (SANS) and UV-visible spectroscopy to elucidate the aggregation behavior of the PZN molecules themselves and the state of living chain ends in a living polymer solution.

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