Abstract
An asymmetric difunctional initiator 2-phenyl-2-[(2,2,6,6 tetramethylpiperidino)oxy] ethyl 2-bromo propanoate (1) was used for the synthesis of ABC-type methyl methacrylate (MMA)-tert-butylacrylate (tBA)-styrene (St) triblock copolymers via a combination of atom transfer radical polymerization (ATRP) and stable free-radical polymerization (SFRP). The ATRP-ATRP-SFRP or SFRP-ATRP-ATRP route led to ABC-type triblock copolymers with controlled molecular weight and moderate poly-dispersity (Mw/Mn < 1.35). The block copolymers were characterized by gel permeation chromatography and 1H NMR. The retaining chain-end functionality and the applying halide exchange afforded high blocking efficiency as well as maintained control over entire routes.
Original language | English |
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Pages (from-to) | 2025-2032 |
Number of pages | 8 |
Journal | Journal of Polymer Science, Part A: Polymer Chemistry |
Volume | 40 |
Issue number | 12 |
DOIs | |
Publication status | Published - 15 Jun 2002 |
Keywords
- Atom transfer radical polymerization (ATRP)
- Stable free-radical polymerization (SFRP)
- Triblock copolymer