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Article Dans Une Revue Journal of Colloid and Interface Science Année : 2017

Chemical modification of the cocoa shell surface using diazonium salts

Résumé

The outer portion of the cocoa bean, also known as cocoa husk or cocoa shell (CS), is an agrowaste material from the cocoa industry. Even though raw CS is used as food additive, garden mulch, and soil conditioner or even burnt for fuel, this biomass material has hardly ever been investigated for further modification. This article proposes a strategy of chemical modification of cocoa shell to add value to this natural material. The study investigates the grafting of aryl diazonium salt on cocoa shell. Different diazonium salts were grafted on the shell surface and characterized by infrared spectroscopy and scanning electronic microscopy imaging. Strategies were developed to demonstrate the spontaneous grafting of aryl diazonium salt on cocoa shell and to elucidate that lignin is mainly involved in immobilizing the phenyl layer.

Domaines

Chimie
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Dates et versions

hal-02046277 , version 1 (22-02-2019)

Identifiants

Citer

Flavia Fioresi, Julien Vieillard, Radhouane Bargougui, Nabil Bouazizi, P.N. Fotsing, et al.. Chemical modification of the cocoa shell surface using diazonium salts. Journal of Colloid and Interface Science, 2017, 494, pp.92-97. ⟨10.1016/j.jcis.2017.01.069⟩. ⟨hal-02046277⟩
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