Well‐definded AB and BAB poly(styrene(S)‐ b ‐4‐vinylpyridine(4VP))s were prepared by anionic polymerization in tetrahydrofuran (THF) at −78°C. Quaternization of these block copolymers was carried out with methyl iodide and P4VP blocks were completely quaternized. The emulsifying effect, viscosity behavior, and binding of methyl orange to the quaternized compounds are discussed in detail from a view‐point of sequential arrangements.
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Ishizu et al. (1982) studied this question.
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