Using Milling To Explore Physical States: The Amorphous and Polymorphic Forms of Dexamethasone

Abstract : This study aims to investigate the polymorphism, physical stability, and amorphization possibilities of dexamethasone (DEX) drug. Milling was found to be an advantageous mean to prepare amorphous DEX nonchemically degraded. It appears to be a very useful process that allowed generating crystalline polymorphic transformation, either from the milling induced amorphous sample or from a mechanically damaged polymorphic form. The paper illustrates the interest of milling as a complementary tool to screen crystal polymorphism and to determine the relative stability of polymorphs when the decision is difficult. Physical characterizations were mainly carried out using X-ray diffraction and differential scanning calorimetry.
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https://hal.univ-lille.fr/hal-02333436
Contributeur : Lilloa Université de Lille <>
Soumis le : vendredi 25 octobre 2019 - 12:42:13
Dernière modification le : samedi 26 octobre 2019 - 01:44:09

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Paulo F. M. Oliveira, Jf Willart, Juergen Siepmann, Florence Siepmann, Marc Descamps. Using Milling To Explore Physical States: The Amorphous and Polymorphic Forms of Dexamethasone. Crystal Growth & Design, 2018, Crystal Growth & Design, 18, pp.1748-1757. ⟨10.1021/acs.cgd.7b01664⟩. ⟨hal-02333436⟩

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