Cellulose Nanocrystals from Fibers of Macauba () and Gravata () from Brazilian Pantanal.

Cellulose nanocrystals (CNC) were obtained from macauba and gravata fibers. Macauba (or Bocaiuva) is a palm tree found throughout most of Brazil and Gravata is an abundant kind of bromelia with 1-2m long leaves, found in Brazilian Pantanal and Cerrado. The raw fibers of both fibers were mercerized with NaOH solutions and bleached; they were then submitted to acid hydrolysis using HSO at 45 °C, varying the hydrolysis time from 15 up to 75 min.