Thermomechanical pulping of novel Brazilian Eucalyptus hybrids

Marcelo Coelho dos Santos Muguet (Corresponding Author), Kyösti Ruuttunen, Anna-Stiina Jääskeläinen, Jorge Luiz Colodette, Tapani Vuorinen

    Research output: Contribution to journalArticleScientificpeer-review

    7 Citations (Scopus)


    The importance of Eucalyptus wood as a sustainable resource is well established. Mechanical pulp production is an energy-intensive process, and methods for decreasing energy demand are needed. In the present article, the structure of Eucalyptus hybrids and the produced pulps from the hybrids were assessed in terms of energy consumption, technical properties, and fiber morphology. The defibration and fiber development were investigated by traditional thermomechanical pulping in laboratory scale. There was no clear difference in the extent of defibration and fibrillation among the hybrids, with the exception of one hybrid (U2xGL1). Guaiacyl lignin contents of more than 7.2% had a minor influence on energy consumption, and this finding is different from the results of previous studies on chemimechanical pulping processes. However, a low amount of guaiacyl lignin (6.1% based on wood) decreased the energy demand. This assessment is of major importance concerning the energy-saving defibration during thermomechanical pulping production.
    Original languageEnglish
    Pages (from-to)489-495
    Issue number5
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed


    • defibration
    • energy consumption
    • Eucalyptus
    • ligning structure
    • pulp properties
    • TMP


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