@Article{jrm.2022.019891,
AUTHOR = {Benoit Ndiwe, Antonio Pizzi, Hubert Chapuis, Noel Konai, Lionel Karga, Pierre Girods, Raidandi Danwe},
TITLE = {Desorption Behavior and Thermogravimetric Analysis of Bio-Hardeners},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {10},
YEAR = {2022},
NUMBER = {8},
PAGES = {2015--2027},
URL = {http://www.techscience.com/jrm/v10n8/47603},
ISSN = {2164-6341},
ABSTRACT = {In this work, the thermal degradation and drying of bio-hardeners are investigated. Four bio-hardeners based on
exudates of <i>Senegalia senegal</i>, <i>Vachellia nilotica</i>, <i>Vachellia seyal</i>, and <i>Acacia Siebteriana</i> were analyzed by FTIR
and thermogravimetric analysis, and a desorption study was also conducted. The analysis by infrared spectroscopy indicates the existence of oligomers of different types all giving 5-hydroxy-2-hydroxymethylfuran and 2,
5-dihydroxymethylfuran which are then the real hardening molecules. The pyrolysis of these extracts reveals three
main regions of mass loss, a first region is located between 25°C and 110°C reflecting the loss of water from the
adhesive and the formation of some traces of volatile organic compounds such as CO<sub>2</sub> and CO, a second zone
characterized by the release of CO, CO<sub>2</sub> and CH<sub>4</sub> gases with peaks between 110° and 798.8°C. At the end of
the analysis, about 22% of the initial mass remains undecomposed, this mass corresponds to the rigid segments
of the bio-hardener which are not completely decomposed.},
DOI = {10.32604/jrm.2022.019891}
}