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Heteroarm Star‐Like Micelles Formed from Polystyrene‐ block‐ poly(2‐vinyl pyridine)‐ block‐ poly(methyl methacrylate) ABC Triblock Copolymers in Toluene
Author(s) -
Tsitsilianis Constantinos,
Sfika Vasiliki
Publication year - 2001
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(20010501)22:8<647::aid-marc647>3.0.co;2-k
Subject(s) - materials science , polymer science
Polystyrene‐ block ‐poly(2‐vinyl pyridine)‐ block ‐poly(methyl methacrylate) ABC triblock copolymers were synthesized by sequential living anionic polymerization. Their solution properties were investigated in toluene, which is a bad solvent for the middle block. Spherical micelles are formed, which consist of a poly(2‐vinyl pyridine) dense core bearing polystyrene and poly(methyl methacrylate) soluble chains at the corona. These micelles exhibit the architecture of heteroarm star copolymers obtained by “living” polymerization methods. The aggregation numbers strongly depend on the length of the insoluble P2VP middle block, thus remarkably affecting the size of the micelles.