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Abstract <p>Using the synthetic visual method, solubility isotherms of the monomer <i>N</i>-<i>tert</i>-butylacrylamide (NTBA) and the radical polymerization initiator azobisisobutyronitrile (AIBN) in carbon dioxide were obtained in the range of temperatures of 305.0–353.2 K and pressures of 0.1–40.0 MPa. The maximum concentrations of NTBA and AIBN at these state parameters were determined. The features of the phase behavior of “low-melting” low-molecular-weight compounds in CO<sub>2</sub> were discussed. It was shown that the solubility of AIBN is not a factor limiting the range of conditions in the polymerization process involving NTBA.</p>

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Solubilities of N-tert-Butylacrylamide and Azobisisobutyronitrile in Carbon Dioxide

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • A. A. Popova,
  • E. N. Golubeva

摘要

Abstract

Using the synthetic visual method, solubility isotherms of the monomer N-tert-butylacrylamide (NTBA) and the radical polymerization initiator azobisisobutyronitrile (AIBN) in carbon dioxide were obtained in the range of temperatures of 305.0–353.2 K and pressures of 0.1–40.0 MPa. The maximum concentrations of NTBA and AIBN at these state parameters were determined. The features of the phase behavior of “low-melting” low-molecular-weight compounds in CO2 were discussed. It was shown that the solubility of AIBN is not a factor limiting the range of conditions in the polymerization process involving NTBA.