کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5186983 1381118 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Homo- and copolymerization of 5-ethylidene-2-norbornene with ethylene by [2-C5Me4-4,6-tBu2C6H2O]TiCl2/AliBu3/Ph3CB(C6F5)4 catalyst system and epoxidation of the resulting copolymer
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Homo- and copolymerization of 5-ethylidene-2-norbornene with ethylene by [2-C5Me4-4,6-tBu2C6H2O]TiCl2/AliBu3/Ph3CB(C6F5)4 catalyst system and epoxidation of the resulting copolymer
چکیده انگلیسی

5-Ethylidene-2-norbornene (ENB) polymerization and copolymerization with ethylene (E) catalyzed by constrained geometry catalyst 2-tetramethylcyclopentadienyl-4,6-di-tert-butylphenoxytitanium dichloride (1) were studied in the presence of AliBu3 and Ph3CB(C6F5)4 (TIBA/B). The catalyst system shows moderate activity on the homopolymerization of ENB, and higher activity on the copolymerization of E/ENB under atmospheric pressure of ethylene. 1H NMR analysis indicates that ENB was regioselectively incorporated into the copolymer backbone through the endocyclic double bond, leaving the ethylidene double bond unreacted. The ethylidene group contained in the poly(E-co-ENB) was quantitatively converted to the epoxy group with m-chloroperbenzoic acid, producing functionalized poly(E-co-ENB)s. The parent and functionalized copolymers have been characterized using IR, NMR, DSC, and GPC techniques.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 49, Issue 12, 10 June 2008, Pages 2839-2844
نویسندگان
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