Journal of Thermal Analysis and Calorimetry

, Volume 106, Issue 3, pp 783–786 | Cite as

Evaluation of the effects of gamma radiation on thermal properties of wood species used in Brazilian artistic and cultural heritage

  • Lucio Cesar Severiano
  • Francisco Antonio Rocco Lahr
  • Marcelo Augusto Gonçalves Bardi
  • Luci Diva Brocardo Machado


The wood is considered a natural composite of extreme complexity, mainly composed of cellulose, lignin, hemicellulose (polyposis), and extractives. Its composition encourages biological attacks from different species. In this context, several techniques have been studied and applied for disinfecting and decontaminating wood-made works of art and cultural heritage objects, which have been damaged by fungi, bacteria, and insects. Gamma radiation has been studied as an alternative to chemical methodologies for this purpose. By this way, the aim of this article is to illustrate the effect of gamma radiation on some physicochemical properties of Pinnus patula, Pinnus cunninghamia, Cedrella fissillis, and Ocotea porosa wood species. The irradiation has shown itself to be a fast and efficient process to eliminate infestations by both insects and microorganisms and no quarantine is required because of the no generation of toxic residues. On the other hand, this process does not protect the irradiated material from re-infestations or re-contamination. In this study, relatively high gamma radiation doses were applied up to 100 kGy so that radiation effects, which are cumulative, could be retrieved by means of thermal properties. The results have shown that gamma radiation, in the studied dose range, does not promote meaningful alterations on the evaluated properties, which allows that artifacts be irradiated multiple times, even if a re-infestation occurs.


Gamma radiation Wood Thermal properties Cultural heritage 



The authors thank Mrs. Marcia Mathias Rizzo and Mr. Danilo Bras dos Santos by suggesting the wood species; Mr. Alex Correia dos Santos by helping during TG tests; Ms. Yasko Kodama and Mr. Paulo de Souza Santos by the 60-cobalt irradiation procedure; and Brazilian National Commission for Nuclear Energy (CNEN) by funding this research (Grant no. 01341.001411/2008-80).


  1. 1.
    Lelis AT, Brazolin S, Fernandes JLG, Lopez GAC, Monteiro MBB, Zenid G. Biodeterioração de madeiras em edificações. São Paulo: IPT; 2001.Google Scholar
  2. 2.
    Mano EB. Polímeros como materiais de engenharia. 3rd ed. São Paulo: Edgard Bluncher; 2003.Google Scholar
  3. 3.
    Lara FM. Princípios de entomologia. 3rd ed. São Paulo: Ícone; 1992.Google Scholar
  4. 4.
    Cappitelli F, Sorlini C. From papyrus to compact disc: the microbial deterioration of documentary heritage. Crit Rev Microbiol. 2005;31:1–10.CrossRefGoogle Scholar
  5. 5.
    Katušin-Ražem B, Ražem D, Braun M. Irradiation treatment for the protection and conservation of cultural heritage artefacts in Croatia. Radiat Phys chem. 2009;7–8:729–31.Google Scholar
  6. 6.
    Despot R, Hasan M, Brischke C, Welzbacher CR, Rapp AO. Changes in physical, mechanical and chemical properties of wood during sterilisation by gamma radiation. Holzforschung. 2007;3:261–6.Google Scholar
  7. 7.
    Betiku E, Adetunji OA, Ojumu TV, Solomon BO. A comparative study of the hydrolysis of gamma irradiated lignocelluloses. Braz J Chem Eng. 2009;2:251–5.CrossRefGoogle Scholar
  8. 8.
    Katsumata N, Yoshimura T, Tsunoda K, Imamura Y. Resistance of gamma-irradiated sapwood of Cryptomeria japonica to biological attacks. J Wood Sci. 2007;4:320–3.CrossRefGoogle Scholar
  9. 9.
    Katsumata N, Tsunoda K, Toyoumi A, Yoshimura T, Imamura Y. Comparative termite (Isoptera: Rhinotermitidae) feeding preference among gamma-irradiated and unirradiated wood. Sociobiology. 2007;1:155–62.Google Scholar
  10. 10.
    Panshin AJ, de Zeeuw C. Textbook of wood technology. New York: Mc-Graw-Hill; 1990.Google Scholar
  11. 11.
    Wellheiser JG. Nonchemical treatment processes for disinfestation of insects and fungi in library collections. Munich: K. G. Saur; 1992.Google Scholar
  12. 12.
    Borysiak S. A study of transcrystallinity in polypropylene in the presence of wood irradiated with gamma rays. J Therm Anal Calorim. 2010;101:439–45.CrossRefGoogle Scholar
  13. 13.
    Yorulmaz SY, Atimtay AT. Investigation of combustion kinetics of treated and untreated waste wood samples with thermogravimetric analysis. Fuel Process Technol. 2009;90:939–46.CrossRefGoogle Scholar
  14. 14.
    Khan F, Ahmad SR, Kronfli E. γ-Radiation induced changes in the physical and chemical properties of lignocellulose. Biomacromolecules. 2006;7:2303–9.CrossRefGoogle Scholar
  15. 15.
    Corradini E, Teixeira EM, Paladin PD, Agnelli JA, Silva ORRF, Mattoso LHC. Thermal stability and degradation kinetic study of white and colored cotton fibers by thermogravimetric analysis. J Therm Anal Calorim. 2009;97:415–9.CrossRefGoogle Scholar
  16. 16.
    Popescu C-M, Lisa G, Manoliu A, Grandinariu P, Vasile C. Thermogravimetric analysis of fungus-degraded lime wood. Carbohydr Polym. 2010;80:78–83.CrossRefGoogle Scholar
  17. 17.
    Campanella L, Tomassetti M, Tomellini R. Thermoanalysis of ancient, fresh and waterlogged woods. J Therm Anal Calorim. 1991;8:1923–32.Google Scholar
  18. 18.
    Korosĕc RC, Lavrič B, Rep G, Pohleven F, Bukovec P. Thermogravimetry as a possible tool for determining modification degree of thermally treated Norway spruce wood. J Therm Anal Calorim. 2009;98:189–95.CrossRefGoogle Scholar
  19. 19.
    Franceschi E, Cascone I, Nole D. Thermal, XRD and spectrophotometric study on artificially degraded woods. J Therm Anal Calorim. 2008;91:119–25.CrossRefGoogle Scholar
  20. 20.
    Zervos S, Moropoulou A. Methodology and criteria for the evaluation of paper conservation interventions: a literature review. Restaurator. 2006;27:219–74.CrossRefGoogle Scholar
  21. 21.
    Selwitz C, Maekawa S. Inert gases in the control of museum insect pests. Los Angeles: The Getty Conservation Institute; 1998.Google Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2011

Authors and Affiliations

  • Lucio Cesar Severiano
    • 1
  • Francisco Antonio Rocco Lahr
    • 2
  • Marcelo Augusto Gonçalves Bardi
    • 1
  • Luci Diva Brocardo Machado
    • 1
  1. 1.Instituto de Pesquisas Energéticas e Nucleares/Comissão Nacional de Energia Nuclear (IPEN/CNEN-SP), Centro de Tecnologia das RadiaçõesSão PauloBrazil
  2. 2.Laboratório de Madeiras e Estruturas de MadeirasUniversidade de São Paulo (USP)São CarlosBrazil

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