Abstract
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-N3 diblock copolymers. Then propargyl-terminated PCL is prepared by ROP of ε-caprolactone. The PEO-b-PS-b-PCL triblock copolymers with M̄n from 1.62 × 104 to 1.96 × 104 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.
| Original language | English |
|---|---|
| Pages (from-to) | 1797-1802 |
| Number of pages | 6 |
| Journal | Macromolecular Chemistry and Physics |
| Volume | 208 |
| Issue number | 16 |
| DOIs | |
| State | Published - 20 Aug 2007 |
Keywords
- Atom transfer radical polymerization (ATRP)
- Block copolymers
- Click reaction
- Ring-opening polymerization