The copolymerization of n ‐butyl acrylate with both 2 and 4 vinylpyridine was investigated. Spectrophotometric analysis was employed for determining copolymer compositions utilizing the vinylpyridine absorption at 263 mμ. Reactivity ratios for butyl acrylate/2‐vinylpyridine were r 1 = 2.50 ± 0.50 and r 2 = 0.10 ± 0.04. For butyl acrylate/4‐vinylpyridine r 1 = 5.51 ± 0.09 and r 2 = 0.46 ± 0.09. These values were compared with calculated estimates made from the Q–e scheme.
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Funt et al. (1957) studied this question.
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