
Keywords: دیازونیم; Cocoa shell; Cocoa husk; Diazonium; Grafting; Lignin; NBD; 4-nitrobenzene diazonium salt; BBD; 4-bromobenzene diazonium salt; CS; cocoa shell; NaOH-CS; cocoa shell treated with sodium hydroxide; NBD-CS; cocoa shell modified with 4-nitrobenzene diazonium s