Cellulose nanomaterials: size and surface influence on the thermal and rheological behavior

Autor:	Marcos Mariano, Nadia El Kissi, Alain Dufresne
Jazyk:	English<br />Portuguese
Rok vydání:	2018
Předmět:	cellulose nanocrystals cellulose nanofibrils thermal stability rheology Chemical technology TP1-1185
Zdroj:	Polímeros, Iss 0 (2018)
Druh dokumentu:	article
ISSN:	1678-5169 0104-1428
DOI:	10.1590/0104-1428.2413
Popis:	Abstract Cellulose nanocrystals (CNC) and nanofibrils (CNF) were obtained by acid hydrolyzis and mechanical treatment, respectively, of cellulosic fibers from paper. Additionally, surface modification was performed for CNC by neutralization (NaOH) and oxidation (TEMPO). The thermal stability, surface properties and rheological behavior of these nanomaterials were compared. A clear difference in CNC surface was found upon neutralization and oxidation treatments, leading to distinct thermal behaviors. Optical and rheological properties were found to be predominantly by the particles size, being strongly affected by inertial effects.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/6a3e38f649ea438fb702be76638d4d19 Zobrazit plný text záznamu View record in DOAJ