The Shape and Size Distribution of Crystalline Nanoparticles Prepared by Acid Hydrolysis of Native Cellulose

Elazzouzi-Hafraoui, Samira; Nishiyama, Yoshiharu; Putaux, Jean‐Luc; Heux, Laurent; Dubreuil, Frédéric; Rochas, Cyrille

doi:10.1021/bm700769p

articleBiomacromoleculesDec 4, 2007Closed access

The Shape and Size Distribution of Crystalline Nanoparticles Prepared by Acid Hydrolysis of Native Cellulose

SESamira Elazzouzi-Hafraoui YNYoshiharu Nishiyama JPJean‐Luc Putaux LHLaurent Heux FDFrédéric Dubreuil

Centre de Recherches sur les Macromolécules Végétales · Université Joseph Fourier · +2 more institutions

PubMed

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Abstract

The shape and size distribution of crystalline nanoparticles resulting from the sulfuric acid hydrolysis of cellulose from cotton, Avicel, and tunicate were investigated using transmission electron microscopy (TEM) and atomic force microscopy (AFM) as well as small- and wide-angle X-ray scattering (SAXS and WAXS). Images of negatively stained and cryo-TEM specimens showed that the majority of cellulose particles were flat objects constituted by elementary crystallites whose lateral adhesion was resistant against hydrolysis and sonication treatments. Moreover, tunicin whiskers were described as twisted ribbons with an estimated pitch of 2.4-3.2 microm. Length and width distributions of all samples were…

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Topics & keywords

Topics

Keywords

Crystallite
Small-angle X-ray scattering
Cellulose
Transmission electron microscopy
Materials science
Crystallography
Hydrolysis
Nanoparticle

UN Sustainable Development Goals

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