A kinetic study of atom transfer radical polymerization of styrene with bis(2-pyridyl)ethylenedimethanimine derivative ligands
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Dosyalar
Tarih
2013
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
TÜBİTAK
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Atom transfer radical polymerization (ATRP) of styrene was carried out with multidentate nitrogenbased ligands, namely N,N’-bis[phenyl(pyrid-2-yl)methylene] ethane-1,2-diamine (BPDA) and N,N’-bis[methyl(pyrid2-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.
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Açıklama
Menteş, Ayfer (Aksaray, Yazar)
Anahtar Kelimeler
Polymer Synthesis, Controlled Radical Polymerization, ATRP, İmine Ligand, ...
Kaynak
Turkish Journal of Chemistry
WoS Q Değeri
N/A
Scopus Q Değeri
Cilt
37
Sayı
5
