Kinetic analysis of the spontaneous thermal polymerization of acrylic acid

Acrylic acid is a monomer that has been responsible for number of severe explosions worldwide as result thermal runaway. The present work was intended to lead an improved understanding the kinetics polymerization and Michael addition reaction (MAR) acrylic acid. Sealed cell differential scanning calorimetry carried out, were assessed on basis model-free Friedman method. In addition, microcalorimetry using Thermal Activity Monitor IV apparatus conducted determine kinetic parameters MAR. rate constant MAR found be k (s−1) = 3.45 × 105 exp (− 9.48 103/T (K)), while activation energy 78.8 kJ mol−1. progress fitted with n-order model, order well determined linearly proportional temperature. By employing modified model in which linear function temperature, we obtained equation closely reproduced experimental results over wide temperature range.