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>Characterization of styrene–methyl methacrylate–n‐butyl acrylate terpolymers. I. Average diad concentration determined by1H‐NMR
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Characterization of styrene–methyl methacrylate–n‐butyl acrylate terpolymers. I. Average diad concentration determined by1H‐NMR
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机译：Characterization of styrene–methyl methacrylate–n‐butyl acrylate terpolymers. I. Average diad concentration determined by1H‐NMR
AbstractThe average diad concentrations of methyl methacrylate (MMA) unit,P2{MiMj}, of the title terpolymer prepared by radical polymerization with various conversions were studied by1H‐NMR measurements. Several methoxy proton peaks of MMA resolved by the diamagnetic shielding effects of styrene were assigned to the individual microstructures of MMA‐centered triads. TheP2{MiMj} were determined from these peak ratios according to the terminal copolymerization model and the Ham's assumption of statistical simplification for a multicomponent copolymer (P2{MiMj} =P2{MjMi}), The observed values,P2{MiMj}, agreed with the values calculated from the monomer reactivity ratios for each conversions, and agreement with the copolymerization theory was evid
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