دورية أكاديمية
Polymerization of methyl methacrylate using bis(imine)cobalt, a polyolefin catalyst
| العنوان: | Polymerization of methyl methacrylate using bis(imine)cobalt, a polyolefin catalyst |
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| المؤلفون: | Majedeh Maroofi, Gholam Zohuri, Saeid Ahmadjo, Navid Ramezanian |
| المصدر: | Polyolefins Journal, Vol 10, Iss 2, Pp 79-88 (2023) |
| بيانات النشر: | Iran Polymer and Petrochemical Institute, 2023. |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | bis-imine cobalt catalysis, polymethyl methacrylate, polymerization, tacticity, Polymers and polymer manufacture, TP1080-1185 |
| الوصف: | A mono-nuclear catalyst of bis-imine cobalt (MC) was synthesized with using 2,6-dibenzhydryl-4-ethoxy phenyl as a ligand. The so huge ligand was prepared via the reaction of 2,6-dibenzhydryl-4-ethoxy phenyl)-N=(CH3)-C(CH3)=O with diacetyl with equal mole stoichiometry in presence of formic acid catalysis. The catalyst was synthesized via a reaction between the ligands and cobalt salt (CoCl2). The catalyst was used for polymerization of methyl methacrylate (MMA), (a polar monomer) in the presence of modified methylaluminoxane (MMAO). The highest polymerization activity (8.6 g PMMA/mmol cat. h) was obtained at [cocatalyst]/[catalyst]=1000:1 molar ratio and at room temperature reaction. For the prepared PMMA, Polymer with branching density of 263/1000C was obtained using 1H NMR technique calculation. The microstructure of one of the produced PMMA was as follow: 48% syndiotactic, 29% isotactic and 23% atactic. GPC analysis of the polymer showed a number average molecular weight of about 5.7 × 105 g/mol and a narrow molecular weight distribution of 1.57. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2322-2212 2345-6868 |
| Relation: | http://poj.ippi.ac.ir/article_1943_1e4ff750822ec36167f0338ee25ccf17.pdf; https://doaj.org/toc/2322-2212; https://doaj.org/toc/2345-6868 |
| DOI: | 10.22063/poj.2023.3341.1257 |
| URL الوصول: | https://doaj.org/article/c6e006827d144346855fc2d95d4beb1c |
| رقم الأكسشن: | edsdoj.6e006827d144346855fc2d95d4beb1c |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 23222212 23456868 |
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| DOI: | 10.22063/poj.2023.3341.1257 |