کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5179904 1502529 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A simplified electrochemically mediated ATRP synthesis of PEO-b-PMMA copolymers
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
A simplified electrochemically mediated ATRP synthesis of PEO-b-PMMA copolymers
چکیده انگلیسی


• Amphiphilic diblock copolymers were synthesized by eATRP and seATRP.
• ATRP of MMA was well controlled with low concentration of CuIIBr2/TPMA complex.
• Results of kinetic studies confirmed controlled process of polymerization.

Poly(ethylene oxide)-block-poly(methyl methacrylate) amphiphilic copolymers were prepared via electrochemically mediated atom transfer radical polymerization (eATRP) utilizing only 50 ppm of CuII complex, rather than previously reported concentrations of catalyst of ca. 1,000–30,000 ppm. The copolymers were also prepared via a simplified electrochemically mediated ATRP (seATRP) procedure utilizing an aluminum wire sacrificial anode as a counter electrode, which was directly immersed into the reaction flask, without the need of its separation. This seATRP system works under both potentiostatic and galvanostatic conditions. In each case the polymerization results showed similar molecular weight evolution while maintaining a narrow molecular weight distribution throughout the reactions. The successful chain extension and formation of block copolymers confirmed the living nature of the poly(alkyl methacrylates) prepared by eATRP and seATRP.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 77, 23 October 2015, Pages 266–271