Article

Journal of Thermal Analysis and Calorimetry

, Volume 91, Issue 2, pp 405-408

Thermal analysis of less common lignocellulose fibers

  • A. L. F. S. d’AlmeidaAffiliated withSchool of Chemistry, Universidade Federal o Rio de Janeiro, Centro de Tecnologia
  • , D. W. BarretoAffiliated withSchool of Chemistry, Universidade Federal o Rio de Janeiro, Centro de Tecnologia
  • , V. CaladoAffiliated withSchool of Chemistry, Universidade Federal o Rio de Janeiro, Centro de Tecnologia
  • , J. R. M. d’AlmeidaAffiliated withMaterials Science and Metallurgy Department, PUC-Rio Email author 

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Abstract

The thermal behavior of four unusual lignocellulose fibers — namely Caroa, Curaua, Piassava and Sponge gourd — is described. Caroa and Curaua fibers showed a more homogeneous thermal degradation, with a single peak dominating in the DTG curve. Piassava and Sponge gourd showed two separated peaks, revealing the more pronounced amounts of hemicellulose present at these fibers. All four fibers are, however, thermally stable up to temperatures of around 200°C. The activation energies for the thermal degradation of the fibers were similar, except for the Caroa fiber. The lower activation energy associated to this fiber was attributed to its higher hemicellulose to cellulose ratio.

Keywords

activation energy Caroa Curaua lignocellulose fibers Piassava Sponge gourd TG thermal analysis