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http://dx.doi.org/10.1107/S0021889809008450

has been cited by the following article:

• TITLE: Reaction Rate Models for the Thermal Decomposition of Ibuprofen Crystals

  AUTHORS: Sundaram Ramukutty, Esakki Ramachandran

  KEYWORDS: Ibuprofen, Model Fitting, Kinetics, Decomposition, Coats-Redfern Method

  JOURNAL NAME: Journal of Crystallization Process and Technology, Vol.4 No.2, April 3, 2014

  ABSTRACT: Kinetics of the decomposition of racemic ibuprofen crystals were studied by non-isothermal analysis. Thermogravimetric analysis revealed that ibuprofen is thermally stable up to 152.6°C and the initial loss of mass was due to evaporation only. Activation energy, pre-exponential factor, activation entropy and Gibbs free energy for the decomposition of ibuprofen were determined using the integral method of Coats-Redfern (CR). Geometrical contraction models were found to be the best fits. The Arrheinus equation for the thermal decomposition of ibuprofen is k = (1.1 × 107) e–79125/RT sec–1.