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    Desorption Behavior and Thermogravimetric Analysis of Bio-Hardeners

    Benoit Ndiwe1,2,3, Antonio Pizzi4,*, Hubert Chapuis5, Noel Konai6, Lionel Karga7, Pierre Girods4, Raidandi Danwe6,8

    Journal of Renewable Materials, Vol.10, No.8, pp. 2015-2027, 2022, DOI:10.32604/jrm.2022.019891

    Abstract In this work, the thermal degradation and drying of bio-hardeners are investigated. Four bio-hardeners based on exudates of Senegalia senegal, Vachellia nilotica, Vachellia seyal, and Acacia Siebteriana 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… More > Graphic Abstract

    Desorption Behavior and Thermogravimetric Analysis of Bio-Hardeners

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