Direct Visualization of Crystalline Domains in Carboxylated Nanocellulose Fibers.

ABSTRACT: Direct visualization of soft organic molecules like cellulose is extremely challenging under a high-energy electron beam. Herein, we adopt two ionization damage extenuation strategies to visualize the lattice arrangements of the β-(1→4)-d-glucan chains in carboxylated nanocellulose fibers (C-NCFs) having cellulose II crystalline phase using high-resolution transmission electron microscopy. Direct imaging of individual nanocellulose fibrils with high-resolution and least damage under high-energy electron beam is achieved by employing reduced graphene oxide, a conducting material with high electron transmittance and Ag⁺ ions, with high electron density, eliminating the use of sample-specific, toxic staining agents, or other advanced add-on techniques. Furthermore, the imaging of c

SUBMITTER: Nabeela K 

PROVIDER: S-EPMC7271348 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature