کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1396661 | 984188 | 2007 | 8 صفحه PDF | دانلود رایگان |
A series of iron(II) complexes (4a–d, 10, and 11) bearing 2,6-bis[(imino)ethyl]pyridine-(3a–d), quinolinaldimine-(8) and thiophenaldimine-(9) based ligands were disclosed as active complexes for the polymerization of tert-butylacrylate (t-BA). After activation with methyl aluminoxane (MAO), the complexes showed moderate to high polymerization activities and produced high molar mass polymers. In addition, the catalyst system 4d/MAO was examined for the polymerization of methyl methacrylate (MMA) and n-vinylcarbazole (NVC). The influence of MAO/Cat. molar ratio, polymerization time, and monomer concentration on the polymerization reaction of methyl methacrylate was explored.In the polymerization of tert-butylacrylate with 2,6-bis[(imino)ethyl]pyridine iron(II)-based catalysts, bulky terminal aliphatic substituents have a favorable influence on the polymerization activity compared to the aromatic ones. This catalyst system was also more active than the quinolinaldimine-, (10) and thiophenaldimine-, (11) based catalysts.
Journal: European Polymer Journal - Volume 43, Issue 7, July 2007, Pages 2967–2974