@Article{jrm.2021.013680,
AUTHOR = {Medjda Amari, Kamel Khimeche, Abdelkader Hima , Redouane Chebout, Abderahmane Mezroua},
TITLE = {Synthesis of Green Adhesive with Tannin Extracted from Eucalyptus Bark for Potential Use in Wood Composites},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {9},
YEAR = {2021},
NUMBER = {3},
PAGES = {463--475},
URL = {http://www.techscience.com/jrm/v9n3/41232},
ISSN = {2164-6341},
ABSTRACT = {Recently, the exploitation of renewable plant resources in the formulation of adhesives is very promising for their availability at low coast, as well as
their richness in biomolecules such as polyphenols. In this way, many research
studies tannins extracted from different sources such as mimosa, quebracho,
and pine have been the subject of very satisfactory recent studies. In this paper,
a new complete characterization of the tannins extracted from the bark of <i>eucalyptus globulus</i> harvested from two regions in Algeria was achieved. The structural
characterization enabled us to confirm the richness in condensed tannins, particularly in <i>procyanidin</i> and <i>prodelphinidin</i> units. The most reactive tannins obtained
during extraction at 70°C (yield: 27.1%) have a Stiasny number of 75.92%. This
extract was used for the formulation of adhesives (tannin/hexamine). The thermal
characterizaction of the adhesives showed higher stability for the tannin formulation
of eucalyptus/hexamine as well as an excellent mechanical performance with a
MOE of 2807 MPa at 180°C and shear strength of 689.4 N/mm<sup>2</sup>.},
DOI = {10.32604/jrm.2021.013680}
}