Cellulosenanocrystals‐organicmontmorillonite nanohybrid material by electrostatic self‐assembly

Abstract

The hybridization based on various nanoparticles is an emerging technological field, involving the synergistic hybrid assembly of nanoparticles. In order to broaden the application of existing nanomaterials such as cellulose nanocrystals (CNC) and montmorillonite (MMT), a novel CNC–organic MMT (OMMT) nanohybrid material was constructed by electrostatic self‐assembly. Morphology observations showed that one‐dimensional needle‐like CNC were adsorbed on the surface of two‐dimensional flake‐like OMMT, thereby forming a three‐dimensional nanohybrid. In the nanohybrid, CNC and OMMT still maintained their original chemical structures. Zeta potential results indicated that there was a strong electrostatic adsorption between CNC and OMMT. Based on this, the lamellar structure of OMMT can hide sulfate groups on the CNC surface and had a shielding effect on heat transfer, thereby evidently improving the thermal stability of the nanohybrid. The nanohybrid with unique nanostructure is expected to achieve synergistic effects in polymer nanocomposites, which may provide a promising strategy for the fabrication of high‐performance polymer nanocomposites.

Extremely Well-Dispersed Zinc Oxide Nanofluids with Excellent Antibacterial, Antifungal, and Formaldehyde and Toluene Removal Properties

“…Stability Analysis. The stability of ZnO particles in aqueous solution, which is closely related to their electrokinetic properties, 29 is as important as their dispersibility. When the surface of nanoparticles has a high surface charge density, a strong repulsive force will be produced between them.…”

Synergistic effects of cellulose nanocrystals‐organic montmorillonite as hybrid nanofillers for enhancing mechanical, crystallization, and heat‐resistant properties of three‐dimensional printed poly(lactic acid) nanocomposites

“…It is noted that the thermal decomposition temperature of the CNC prepared in this work was in the range of 200–350°C with T onset and T max of about 252.3 and 279.7°C, respectively. [ 29 ] Due to the severe agglomeration of the CNC nanofillers, the CNC aggregates decomposed at a lower temperature than the PLA matrix. As a result, the T onset and T max of the P‐C nanocomposites decreased with increasing CNC content.…”

“…During this process, CNC‐OMMT hybrid nanoparticles formed by electrostatic self‐assembly. [ 29 ] It should be noted that the mass ratio of CNC to OMMT in the hybrid nanoparticles was controlled to be 1:1.…”

“…[ 26–28 ] On the other hand, it is not very common to study the effect of hybrid nanofillers on the physicochemical properties of polymer‐based nanocomposite materials. In a recently published report, [ 29 ] we have successfully constructed novel CNC‐organic montmorillonite (OMMT) hybrid nanoparticles by electrostatic self‐assembly. The CNC exhibited one‐dimensional (1D) rod‐like structure with diameters and lengths ranging between 5–10 and 50–300 nm, respectively, while the OMMT modified with cationic surfactants existed as irregular two‐dimensional (2D) nanosheets with lateral dimensions in the range of 200–500 nm and a thickness of about 3.4 nm.…”

Assembly of cellulose nanocrystals and clay nanoplatelets studied by time-resolved X-ray scattering

“…While self-assembly has been studied in single-component CNC and MNT dispersions, 11,[31][32][33] including, in the case of CNC, in confined geometries such as sessile, 34 emulsion 35 and levitating 36 droplets, studies of multicomponent CNC:MNT systems are sparse. 28,37 Exploring and probing how CNC and inorganic nanoparticles such as clays assemble in aqueous dispersions is important for the development of processing routes and new classes of sustainable materials.…”