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Optimization of Atom Transfer Radical Polymerization Using Cu(I)/Tris(2-(dimethylamino)ethyl)amine as a Catalyst
Optimization of Atom Transfer Radical Polymerization Using Cu(I)/Tris(2-(dimethylamino)ethyl)amine as a Catalyst
- Source :
- Macromolecules; November 14, 2000, Vol. 33 Issue: 23 p8629-8639, 11p
- Publication Year :
- 2000
-
Abstract
- The optimization of the synthesis of homopolymers from n-butyl acrylate (BA), styrene (Sty), and methyl methacrylate (MMA), using copper-based atom transfer radical polymerization (ATRP) with tris(2-dimethylaminoethyl)amine (Me<INF>6</INF>-TREN) as a ligand is reported. Catalyst concentration (copper bromide complexed with 1 equiv of Me<INF>6</INF>-TREN) as low as 1% relative to initiator (50 ppm in the reaction mixture) was sufficient to successfully prepare well-defined poly(n-butyl acrylate) in bulk. With 50% catalyst to initiator, styrene was polymerized in bulk. The deactivator species had poor solubility in nonpolar solvents. Finally, the polymerization of methyl methacrylate with CuBr/Me<INF>6</INF>-TREN required the use of a high concentration of catalyst and the addition of Cu(II)Cl<INF>2</INF> at the beginning of the reaction; the resulting polymers were of higher molecular weight than predicted by theory and had relatively broad molecular weight distributions.
Details
- Language :
- English
- ISSN :
- 00249297 and 15205835
- Volume :
- 33
- Issue :
- 23
- Database :
- Supplemental Index
- Journal :
- Macromolecules
- Publication Type :
- Periodical
- Accession number :
- ejs1149642