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Abstract <p>The kinetics of radical polymerization of perfluoropropylvinyl ether (PFPE) was investigated in the presence of a radical initiator at pressures of 264–1056 MPa and temperatures of 323–368 K. Activation energies were determined at different pressures: at <i>P</i> = 10.56 kbar <i>E</i><sub>act</sub> = 135.4 kJ/mol (32.4 kcal/mol), at <i>P</i> =7.04 kbar <i>E</i><sub>act</sub> = 108.3 kJ/mol (25.9 kcal/mol). The activation volume of the total polymerization rate Δ<i>V</i><sub>0</sub><sup>≠</sup> = –14.6 cm<sup>3</sup>/mol was determined at <i>T</i> = 353 K. The activation energies of the material initiation were calculated at different pressures [at <i>P</i> = 10.56 kbar, <i>E</i><sub><i>i</i></sub><i> =</i> 123.3 kJ/mol (29.5 kcal/mol), at <i>P</i> = 7.04 kbar, <i>E</i><sub><i>i</i></sub> = 88.3 kJ/mol (21.1 kcal/mol)].</p>

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Kinetics of Radical Polymerization of Perfluoropropylvinyl Ether in the Presence of p-Perfluorotoluylic Acid Peroxide at High Pressures

  • 期刊论文

  • 发表日期：

    2025年3月1日

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  • I. B. Konovalova,
  • I. V. Zavarzin

摘要

Abstract

The kinetics of radical polymerization of perfluoropropylvinyl ether (PFPE) was investigated in the presence of a radical initiator at pressures of 264–1056 MPa and temperatures of 323–368 K. Activation energies were determined at different pressures: at P = 10.56 kbar Eact = 135.4 kJ/mol (32.4 kcal/mol), at P =7.04 kbar Eact = 108.3 kJ/mol (25.9 kcal/mol). The activation volume of the total polymerization rate ΔV0≠ = –14.6 cm3/mol was determined at T = 353 K. The activation energies of the material initiation were calculated at different pressures [at P = 10.56 kbar, Ei = 123.3 kJ/mol (29.5 kcal/mol), at P = 7.04 kbar, Ei = 88.3 kJ/mol (21.1 kcal/mol)].