Journal of Thermal Analysis and Calorimetry

, Volume 138, Issue 5, pp 3701–3714 | Cite as

Characterization of solid dispersions of a powerful statin using thermoanalytical techniques

  • Karla Monik Alves da SilvaEmail author
  • Fernando José de Lima Ramos Júnior
  • José Venâncio Chaves Júnior
  • Deysiane Oliveira Brandão
  • Taynara Batista Lins
  • Rui Oliveira Macêdo
  • Fábio Santos de Souza


One of the major challenges for the development of drugs containing active pharmaceuticals ingredient (API) with low solubility is to add technologies to the development process in order to increase bioavailability while ensuring stability. Thus, the main objective of this work was to apply analytical methodologies in the characterization and stability of solid dispersions of atorvastatin calcium obtained by different techniques. The calorimetric curves showed different thermal profiles for the dispersions, presenting a greater interaction of the components, the SD-PEG sd. Moreover, the thermogravimetric curves showed that the PEG conferred greater stability to the dispersions. The FTIR/Pearson correlation and PXRD data revealed neither chemical interaction nor intense amorphization in the solid dispersions, respectively. Additionally, it was concluded the thermoanalytical techniques are useful, complementary, and elucidative in the characterization of the physical–chemical nature of the solid dispersions obtained by lyophilization and spray drying, providing reliable results regarding the thermal behavior and the solubility of the samples.


Solubility Solid dispersion Thermal analysis PXRD FTIR Pearson correlation 



The authors would like to thank the “Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)” and the “Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)” for supporting this work. Additionally, the authors would like to thank Felipe Ramos for support to translate this manuscript.

Compliance with ethical standards

Conflict of interest

The authors declare no conflicts of interest.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  • Karla Monik Alves da Silva
    • 1
    • 2
    Email author
  • Fernando José de Lima Ramos Júnior
    • 1
    • 2
  • José Venâncio Chaves Júnior
    • 2
  • Deysiane Oliveira Brandão
    • 1
    • 2
  • Taynara Batista Lins
    • 2
  • Rui Oliveira Macêdo
    • 1
    • 2
  • Fábio Santos de Souza
    • 2
  1. 1.Department of Pharmaceutical Sciences, Postgraduate Program in Pharmaceutical SciencesUniversidade Federal de PernambucoRecifeBrazil
  2. 2.Unified Laboratories of Pharmaceutical Development and Assays, Department of Pharmaceutical SciencesUniversidade Federal da ParaíbaJoão PessoaBrazil

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