Abstract
The initial polymerization rate equations (Rp=k[M]m[I]n) of 2,4,5-tribromo-styrene (TBS) in toluene and in dioxane were determined at 60°C in the presence of 2,2′-azobisisobutyronitrile (AIBN) as follows: Rp=8.08×10−4 [TBS]1.39[AIBN]0.49 (in toluene), Rp=3.05×10−3 [TBS]1.17[AIBN]0.74 (in dioxane). Overall activation energies (E) for the polymerizations in toluene and in dioxane were determined as 24.5 and 22.3 kcal mol−1, respectively. The monomer reactivity ratios (r1, r2) in the copolymerization of TBS (M1) with styrene (ST; M2), and Alfrey-Price Q, e values were determined as follows: r1=2.78, r2=0.23, Q1=2.54, e1=−0.14. The heat of fusion and the heat of polymerization for TBS were 6.0 and 14.9 kcal mol−1, respectively.
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Oishi, T., Horie, H. & Shuyama, H. Radical Polymerization of 2,4,5-Tribromostyrene. Polym J 25, 781–787 (1993). https://doi.org/10.1295/polymj.25.781
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DOI: https://doi.org/10.1295/polymj.25.781