Journal of Thermal Analysis and Calorimetry

, Volume 127, Issue 1, pp 765–772 | Cite as

Application of thermal analysis methods for damage assessment of leather in an old military coat belonging to the History Museum of Braşov—Romania

  • Petru BudrugeacEmail author
  • Cristina Carşote
  • Lucreţia Miu


The aim of this work has been the assessment of the thermo-oxidative, hydrothermal and crystalline zone stabilities of several leather samples taken by the conservators from a military coat dated sixteenth–seventeenth centuries, belonging to the History Museum of Braşov—Romania. For this purpose, the thermo-gravimetry/derivative thermo-gravimetry (TG/DTG), differential scanning calorimetry (DSC) and micro hot table (MHT) methods have been employed. The thermo-oxidative damage of leather has been characterized by the rate of the first thermo-oxidation process highlighted in TG/DTG curves recorded in static air atmosphere. The hydrothermal denaturation of leather has been characterized by MHT method and DSC analysis in excess water conditions. The damage of crystalline zone of collagen in leather has been determined by DSC analysis in nitrogen flow. The qualitative damage for each leather sample and each kind of deterioration has been evaluated using the criteria resulted by thermal analysis of a large number of collagen-based materials (pure collagens, new and old parchments and leathers). The obtained results could facilitate the choice of the restoration and conservation procedures applicable for the investigated military coat.


Thermal analysis Historical leather Military coat Damage assessment 



The work was supported by the Romanian National Authority for Scientific Research, CNCS—UEFISCDI research projects—Intelligent System for Analysis and Diagnosis of Collagen-Based Artefacts (COLLAGE, PNII 224/2012) and Intelligent System for Movable Cultural Heritage Monitoring in a Changing Environment (INHERIT, PN II 325/2014).


  1. 1.
    Forbes RJ. Studies in ancient technology, vol. V. Leiden: Brill Academic Publishers; 1966. p. 22.Google Scholar
  2. 2.
    Odlyha M. The application of thermoanalytical techniques to the preservation of art and archaeological objects. In: Brown ME, Gallager PK, editors. Handbook of thermal analysis and calorimetry, Chap. 2, vol. 2. Amsterdam: Elsevier; 2009.Google Scholar
  3. 3.
    Budrugeac P, Miu L, Bocu V, Wortmann FJ, Popescu C. Thermal degradation of collagen-based materials that are supports of cultural and historical objects. J Therm Anal Calorim. 2003;72:1057–65.CrossRefGoogle Scholar
  4. 4.
    Budrugeac P, Miu L, Popescu C, Wortmann FJ. Identification of collagen-based materials that are supports of cultural and historical objects. J Therm Anal Calorim. 2004;74:75–85.Google Scholar
  5. 5.
    Budrugeac P, Miu L, Soukova M. The damage in the patrimonial books from Romanian libraries. Thermal analysis methods and scanning electron microscopy. J Therm Anal Calorim. 2007;88:693–9.CrossRefGoogle Scholar
  6. 6.
    Budrugeac P, Cucos A, Miu L. The use of thermal analysis methods for authentication and conservation state determination of historical and/or cultural objects manufactured from leather. J Therm Anal Calorim. 2011;104:439–50.CrossRefGoogle Scholar
  7. 7.
    Budrugeac P, Cucos A, Miu L. Use of thermal analysis methods to asses the damage in the book bindings of some religious books from XVIII century, stored in Romanian libraries. J Therm Anal Calorim. 2014;116:141–9.CrossRefGoogle Scholar
  8. 8.
    Chahine C. Acid deterioration of vegetable tanned leathers. In: Calcan C, Haines B, editors. Leather, its composition and changes with time. Northampton: The Leather Conservation Centre; 1991. p. 75–87.Google Scholar
  9. 9.
    Chahine C. Changes in hydrothermal stability of leather and parchment with deterioration: a DSC study. Thermochim Acta. 2000;365:101–10.CrossRefGoogle Scholar
  10. 10.
    Budrugeac P, Miu L. The suitability of DSC method for damage assessment and certification of historical leathers and parchments. J Cult Herit. 2008;9:146–53.CrossRefGoogle Scholar
  11. 11.
    Cucos A, Budrugeac P, Miu L, Mitrea S, Sbarcea G. Dynamic mechanical analysis (DMA) of new and historical parchments and leathers. Correlations with DSC and XRD. Thermochim Acta. 2011;516:19–28.CrossRefGoogle Scholar
  12. 12.
    Cucos A, Budrugeac P, Miu L. DMA and DSC studies of accelerated aged parchment and vegetable-tanned leather samples. Thermochim Acta. 2014;583:86–93.CrossRefGoogle Scholar
  13. 13.
    Carşote C, Budrugeac P, Decheva R, Haralampiev NS, Miu L, Badea E. Characterization of a Byzantine manuscript by infrared spectroscopy and thermal analysis. Rev Roum Chim. 2014;56:429–36.Google Scholar
  14. 14.
    Cohen NA, Odlyha M, Foster G. Measurement of shrinkage behaviour in leather and parchment by dynamic mechanical thermal analysis. Thermochim Acta. 2000;365:111–7.CrossRefGoogle Scholar
  15. 15.
    Odlyha M, Foster GM, Cohen NS, Larsen R. Characterisation of leather samples by non-invasive dielectric and thermomechanical techniques. J Therm Anal Calorim. 2000;59:587–600.CrossRefGoogle Scholar
  16. 16.
    Jeyapalina S, Attenburrow GE, Covington AD. Investigation of leather drying by dynamic mechanical thermal analysis (DMTA). J Soc Leather Technol Chem. 2007;91:102–7.Google Scholar
  17. 17.
    Cucos A, Budrugeac P. The suitability of DMA method for the characterization of recent and historical parchments and leathers. Int J Conserv Sci. 2010;1:13–8.Google Scholar
  18. 18.
    Larsen R, Vest M, Nielsen K. Determination of hydrothermal stability (shrinkage temperature) of historical leather by the Micro Hot Table technique. J Soc Leather Technol Chem. 1993;77:151–6.Google Scholar
  19. 19.
    Larsen R, Vest M, Nielsen K. STEP leather project—protection and conservation of european cultural heritage. Research report no. 1, 1994, pp. 151–164.Google Scholar
  20. 20.
    Larsen R. Experiments and observations in the study of environmental impact on historical tanned leathers. Thermochim Acta. 2000;365:85–99.CrossRefGoogle Scholar
  21. 21.
    Larsen R, Sommer PDV, Axelsson KM. Scientific approach in conservation and restoration of leather and parchment objects in archives and libraries. In: Engel Patricia, Schirò Joseph, Larsen René, editors. New approaches to book and paper conservation—restoration. Elisaveta Moussakova and Isván Kecskeméti: Horn/Wien Verlag Berger; 2011. p. 239–55.Google Scholar
  22. 22.
    Vest M. White tawed leather—aspects of conservation. Preprint of ninth International Congress IADA, Copenhagen, August 15–21, 1999.Google Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2016

Authors and Affiliations

  • Petru Budrugeac
    • 1
    Email author
  • Cristina Carşote
    • 2
    • 3
  • Lucreţia Miu
    • 4
  1. 1.National Institute for Research and Development in Electrical Engineering ICPE-CABucharestRomania
  2. 2.National Museum of Romanian History/Centre of Research and Scientific Investigation (MNIR/CCIS)BucharestRomania
  3. 3.Department of Physical Chemistry, Faculty of ChemistryUniversity of BucharestBucharestRomania
  4. 4.National Research and Development Institute for Textile and Leather– Division Leather and Footwear Research InstituteBucharestRomania

Personalised recommendations