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- Title
A kinetic study of atom transfer radical polymerization of styrene with bis(2-pyridyl)ethylenedimethanimine derivative ligands.
- Authors
ARSLAN, Hülya; KÜÇÜK, Yasemin; MENTEŞ, Ayfer; ACAR, Metin Hayri
- Abstract
Atom transfer radical polymerization (ATRP) of styrene was carried out with multidentate nitrogen based ligands, namely N,N'-bis[phenyl(pyrid-2-yl)methylene] ethane-1,2-diamine (BPDA) and N,N'-bis[methyl(pyrid- 2-yl)methylene] ethane-1,2-diamine (BMDA), and catalyst systems at catalyst/ligand molar ratios of 1/0.33, 1/0.5, 1/1, and 1/1.5 by using 2 different initiators, (1-bromoethyl)benzene (BEB) and ethyl-2-bromopropionate (EBP). Linear first-order kinetic plots were observed for ATRP of styrene upon using BPDA as a ligand with both initiators. Even though the linear slopes indicate that radical concentration remains constant during reactions, high molecular weights were obtained at low conversion and showed a linear relation thereafter. To investigate the molecular weight effect, reactions were also performed in the presence of (1-bromoethyl)benzene initiator in dimethylformamide (DMF) for BPDA and in toluene for BMDA using a catalyst/ligand ratio of 1/1.
- Subjects
CHEMICAL kinetics; ATOM transfer reactions; RADICALS (Chemistry); POLYMERIZATION; STYRENE; ETHYLENE derivatives; LIGANDS (Chemistry)
- Publication
Turkish Journal of Chemistry, 2013, Vol 37, Issue 5, p824
- ISSN
1300-0527
- Publication type
Article
- DOI
10.3906/kim-1302-64