Suzano S.a.

Germano Andrade Siqueira

Bibiana Ribeiro Rubini

Heloisa Ogushi Romeiro Ramires

Marcos Henrique Luciano Silveira

The present invention relates to a process for producing a nanocellulosic material based on the use of fractioning of cellulosic pulp stream from pre-treatment or mechanical defibrillation (partially refined/defibrillated pulp) in combination with stages of mechanical defibrillation, in which both the accept fraction and the reject fraction can be conveyed to stages of consistency adjustments so as to precede another distinct defibrillation stage. For example, if the accept is conveyed to a consistency adjustment preceding a second defibrillation stage while the reject is conveyed to the other independent stage of consistency adjustment to return to the first stage of mechanical defibrillation.

Process for producing a nanocelullosic material comprising at least two stages of defibrillation of cellulosic feedstock and at least one intermediate fractioning stage

Growing community of inventors

São José dos Campos, Brazil

Germano Andrade Siqueira