Block copolymers of n‐propyl p‐styrene sulfonate with isoprene and styrene: Synthesis, characterization, and phase separation behavior

Abstract A series of ABA block copolymers based on n ‐propyl p ‐styrene sulfonate (A block) and isoprene or styrene (B block) were synthesized and characterized. The synthesis was based on methods developed previously for the anionic polymerization of n ‐propyl p ‐styrene sulfonate [S. J. Whicher and J. L. Brash, J. Polym. Sci., Polym. Chem. Ed. , 19 , 1995 (1981)], and consisted of forming a polyisopryl dianion by initiation with sodium …