Atom Transfer Radical Polymerization Using Multidentate Amine Ligands Supported on Soluble Hyperbranched Polyglycidol
✍ Scribed by Kainthan Rajesh Kumar; Jayachandran N. Kizhakkedathu; Donald E. Brooks
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 121 KB
- Volume
- 205
- Category
- Article
- ISSN
- 1022-1352
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✦ Synopsis
Abstract
Summary: Controlled polymerization of styrene in toluene was achieved by atom transfer radical polymerization (ATRP) using hyperbranched polyglycidol‐supported multidentate amine ligands/Cu^I^Br catalyst systems. These catalyst systems with nanoscopic dimensions were more active than the corresponding low‐molecular‐weight ligands. The controlled/living nature of the polymerization is supported by linear first order plots (ln[M]~o~/[M] versus time) and a linear increase of $\overline M _{\rm n}$ versus conversion as well as low polydispersity. Similar controlled polymerization of methyl methacrylate was possible in acetonitrile. Up to 97% of total copper used for polymerization could be removed from the polymer by simple precipitation in methanol and filtration.
Molecular weight characteristics for styrene polymerization using PG‐triamine as a ligand.
magnified imageMolecular weight characteristics for styrene polymerization using PG‐triamine as a ligand.