Journal of Thermal Analysis and Calorimetry

, Volume 109, Issue 3, pp 1177–1183 | Cite as

Study of gypsum by PDSC

  • Jorge López-Beceiro
  • Carlos Gracia-Fernández
  • Javier Tarrío-Saavedra
  • Silvia Gómez-Barreiro
  • Ramón ArtiagaEmail author


Calcium sulfate dihydrate has been widely characterized by both differential scanning calorimetry and thermogravimetry (TG). Two dehydration processes were reported to be partially overlapping. High resolution TG and water vapor self generated atmosphere pin-hole lid strategies were used to increase the resolution of both dehydration processes. In this study, isobaric experiments were carried out in a pressure differential scanning calorimetry cell. The approach consisted in combining the pin-hole lid with different pressures with nitrogen atmosphere. Resolution was improved at moderately low pressures. At higher pressures other processes were observed.


Gypsum PDSC Pressure Crystallization Vapor Water 



This study was partially funded by the Spanish Ministerio de Educacion y Ciencia MTM2008-00166 and MAT2010-21342-C02-01.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2012

Authors and Affiliations

  • Jorge López-Beceiro
    • 1
  • Carlos Gracia-Fernández
    • 2
  • Javier Tarrío-Saavedra
    • 3
  • Silvia Gómez-Barreiro
    • 4
  • Ramón Artiaga
    • 1
    Email author
  1. 1.Higher Polytechnic School, Campus de EsteiroUniversity of A CoruñaFerrolSpain
  2. 2.Thermal Analysis, Rheology and Microcalorimetry Applications, TA Instruments—Waters Cromatografía, S.A. Avda. EuropaAlcobendasSpain
  3. 3.Faculty of Business and Economics, Campus de ElviñaUniversity of A CoruñaA CoruñaSpain
  4. 4.Department of Applied Physics, CESUGAUniversity College of DublinA CoruñaSpain

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