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Synthesis of Novel Linear PEO‐ b ‐PS‐ b ‐PCL Triblock Copolymers by the Combination of ATRP, ROP, and a Click Reaction
Author(s) -
He Xiaohua,
Liang Liyuan,
Xie Meiran,
Zhang Yiqun,
Lin Shaoliang,
Yan Deyue
Publication year - 2007
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200700153
Subject(s) - copolymer , polymer chemistry , styrene , amphiphile , materials science , propargyl , click chemistry , chemistry , polymer , organic chemistry , catalysis , composite material
A new strategy to synthesize a series of well‐defined amphiphilic PEO‐ b ‐PS‐ b ‐PCL block copolymers is presented. First, bromine‐terminated diblock copolymers PEO‐ b ‐PS‐Br are prepared by ATRP of styrene, and converted into azido‐terminated PEO‐ b ‐PS‐N 3 diblock copolymers. Then propargyl‐terminated PCL is prepared by ROP of ε ‐caprolactone. The PEO‐ b ‐PS‐ b ‐PCL triblock copolymers with $\overline M _{\rm n}$ from 1.62 × 10 4 to 1.96 × 10 4 and a narrow PDI from 1.09 to 1.19 are finally synthesized from these precursors. The structures of these triblock copolymers and their precursors have been characterized by NMR, IR, and GPC analysis.