West AG, Barner-Kowollik C, Perrier S (2010) Poly(ethylene glycol) as a ‘green solvent’ for the RAFT polymerization of methyl methacrylate. Yang L, Luo Y, Liu X, Li B (2009) RAFT miniemulsion polymerization of methyl methacrylate. Macromolecules 38(6):2131–2136ĭai B, Song M, Hourston DJ, He X, Liang H, Pan C (2004) Influence of block lengths and symmetries of block copolymers on phase behavior of polymer A/polymer B/block copolymer ternary blends. Liu B, Kazlauciunas A, Guthrie JT, Perrier S (2005) One-Pot Hyperbranched Polymer Synthesis Mediated by Reversible Addition Fragmentation Chain Transfer (RAFT) Polymerization. Yan M, Lin F-Y, Cochran EW (2017) Dynamics of hyperbranched polymers derived from acrylated epoxidized soybean oil. The obtained block copolymers were characterized by gel permeation chromatography, differential scanning calorimetry, Fourier transform infrared spectroscopy, and hydrogen nuclear magnetic resonance ( 1H NMR) spectroscopy. As a result, the macro-MADIX agents and the azo-initiator macromolecules were performed successful formation of the block copolymers. The controlled polymerizations showed typical living properties, and polymers having low polydispersity (below Đ < 1.4) were obtained with well-defined macromolecular structures. In this process, the molar mass (M n) increased over time for a controlled MADIX polymerization process, but the polydispersity varied slightly. Polystyrene–polyethylene glycol–polystyrene (PS-PEG-PS) copolymers were prepared easily with molecular weight (M n) from 23,000 to 43,000 g/mol by MADIX copolymerization of styrene using PEG-N = N-PEG (M n, PEG = 600, 1000, 1500, and 3000 g/mol) as the macro-MADIX agents. In this system, the multifunctional agents were used as both macromolecular chain transfer agents and free radical sources. Novel macro-xanthate agents containing azo initiator and polyethylene glycol (PEG) were synthesized to prepare block copolymers via macromolecular design by an interchange of xanthate (MADIX) polymerization.
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