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The determination of the composition of vinyl acetate (VAc) ‐ vinyl propionate (VPr) copolymers has been studied by infrared (IR) and nuclear magnetic resonance (NMR) analyses. The monomer reactivity ratios for the copolymerization of VAc and VPr obtained by NMR analysis were very close to those obtained by IR analysis. Both methods appeared to be extremely rapid and accurate.
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Toshihiro Hirai (1975) studied this question.
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