Synthesis of block copolymers by emulsion `living/controlled' radical polymerization of vinyl monomers in sequence

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Lab. of Living Polymerization, E. China Univ. of Sci. and Technol., Shanghai 200237, China [1 ]
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来源：
Am Chem Soc Polym Prepr Div Polym Chem | / 2卷 / 1049-1050期
关键词：
Differential scanning calorimetry - Free radical polymerization - Glass transition - Infrared spectroscopy - Monomers - Nuclear magnetic resonance spectroscopy - Polyacrylates - Polymethyl methacrylates - Polystyrenes - Purification - Synthesis (chemical) - Terpolymers;
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摘要：
Block copolymers, poly(methyl methylacrylate-b-styrene-b-methyl methylacrylate), poly(butyl acrylate-b-methyl methylacrylate), poly(styrene-b-butyl acrylate-b-styrene) and poly(butyl acrylate-b-styrene), are synthesized by emulsion `living/controlled' radical polymerization of vinyl monomers in sequence. H NMR and IR spectra of these copolymers are in good agreement with their structures. Differential scanning calorimetry analytical results show separate glass transition temperature corresponding to transition of each homopolymer and characteristic of microphase separated copolymers in BA/St di- and tri-block segments.
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