کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5210512 | 1382898 | 2011 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of biodegradable polycarbonate by alternating copolymerization of carbon dioxide and propylene oxide using a cobalt/Schiff base catalyst
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis of biodegradable polycarbonate by alternating copolymerization of carbon dioxide and propylene oxide using a cobalt/Schiff base catalyst Synthesis of biodegradable polycarbonate by alternating copolymerization of carbon dioxide and propylene oxide using a cobalt/Schiff base catalyst](/preview/png/5210512.png)
چکیده انگلیسی
A series of cobalt/Schiff base complexes, (R,R)-SalenCoIIIX [Salen = N,Nâ²-bis(3,5-di-tert-butylsalicylidene)-1,2-di-phenylethylenediimine; X = OOCCF3 (1), OOCCCl3 (2), and OOCCH3 (3)], were investigated for the alternating copolymerization of carbon dioxide with racemic propylene oxide in the presence of [PPN]Cl ([PPN] = bis(triphenylphosphine)iminium). The effect of the axial group X of the complexes and the reaction conditions on the yield, the selectivity for poly(propylene carbonate) over propylene carbonate, and the polymer molecular weight for this transformation were investigated. A high molecular weight of 72.5 kg molâ1 (Mn/Mw = 1.27, yield 76%) for the copolymer was achieved.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 71, Issue 2, February 2011, Pages 121-125
Journal: Reactive and Functional Polymers - Volume 71, Issue 2, February 2011, Pages 121-125
نویسندگان
Hongchun Li, Yongsheng Niu,