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Synthesis of Amphiphilic Symmetrical ABA Triblock Copolymers PS‐ b ‐PEG‐ b ‐PS Using a Bifunctional Macro RAFT Agent
Author(s) -
CortezLemus Norma A.,
Baldenebro Víctor,
ZizumboLopez Arturo,
LiceaClaverie Angel
Publication year - 2013
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201200053
Subject(s) - raft , copolymer , amphiphile , peg ratio , bifunctional , materials science , polymer chemistry , reversible addition−fragmentation chain transfer polymerization , polystyrene , polymerization , radical polymerization , chemical engineering , chemistry , organic chemistry , polymer , catalysis , finance , economics , engineering , composite material
This study involves the synthesis, characterization and study of self‐aggregation of PEG‐based amphiphilic triblock copolymers. PEG based difunctional macro RAFT agents were synthesized and characterized. PS‐ b ‐PEG‐ b ‐PS block copolymers were synthesized via the RAFT controlled free radical polymerization using the synthesized PEG dual macro RAFT agents. The content of polystyrene blocks on the triblocks was varied from 12% to 36% (based on molecular weight increase), adjusting the synthetic conditions. The triblocks self‐aggregate in Dioxane‐Water mixtures in sizes depending on the water content.