Kinetics of electric field induced vertical orientation of halloysite nanotubes in photocurable nanocomposites

Pan, Shuyang; Guo, Yuanhao; Chen, Yuwei; Çakmak, Mükerrem

doi:10.1039/c9na00369j

Cited by 5 publications

(2 citation statements)

References 39 publications

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“…This ordered arrangement can endow them with distinctive properties and functions, particularly holding potential for applications in fields such as optics 12 and biology. 13 Recent research on the self-assembly of HNTs primarily concentrated on evaporation-induced self-assembly (EISA), 14 shear force-induced assembly, 15 electric force-induced assembly, 16 and interface assembly. 17 For instance, HNT dispersion can be dried in a confined space with a round shape on a flat substrate to form a pattern of regular concentric rings, which was suitable for use as scaffolds to support cell growth because of the surface's low cytotoxicity.…”

Section: ■ Introductionmentioning

confidence: 99%

Formation and Application of Polymer Spherulite-like Patterns of Halloysite Nanotubes by Evaporation-Induced Self-Assembly

Xu,

He,

et al. 2024

ACS Appl. Mater. Interfaces

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Halloysite nanotubes (HNTs) are one-dimensional clay nanomaterials featuring distinct tubular structures and unique surface charges. HNTs can readily form ordered assembly structures under specific conditions, which shows significant potential applications in optical and biological fields. In this study, sodium hexametaphosphate (SHMP) was employed as a stabilizer to prepare polymer spherulite-like patterns via the evaporation-induced self-assembly (EISA) technique. The incorporation of SHMP enhanced the repulsion force among the nanotubes and the surface potential, which facilitated the orderly deposition of HNTs. The influence of HNT concentration, SHMP concentration, drying temperature, and substrate on the polymer spherulites-like pattern has been investigated in detail. The optimal conditions were 10 wt % HNT dispersion, 0.6 wt % SHMP concentration, 30 °C as drying temperature, and glass substrates. In addition, by changing the droplet volume and shape of the three-phase contact line, patterns of different sizes and shapes can be achieved. Bovine serum albumin or metal salt compounds were incorporated into the dispersion of SHMP-modified HNTs, which altered the charge and the self-assembled patterns with different area ratios. Thus, this technology can be utilized for the analysis and comparison of protein and metal ion concentration accurately. This study creates the correlation between the structural parameters and the preparation process involved in creating polymer spherulite-like patterns of modified HNTs and offers fresh insights into potential applications for the selfassembly of HNT droplets in the realms of anticounterfeiting and solution concentration analysis.

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Section: ■ Introductionmentioning

confidence: 99%

Formation and Application of Polymer Spherulite-like Patterns of Halloysite Nanotubes by Evaporation-Induced Self-Assembly

Xu,

He,

et al. 2024

ACS Appl. Mater. Interfaces

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“…19 Aligning inorganic nanotubes on solid substrates into striplike patterns accomplished with drying by a shearing method and with brush assistance was also developed in our group. 15 The potential applications of the hierarchical architecture of a 1D object with an ordered alignment in the biomedical, 19 sensing, 20 optics, 21 and electronic fields 22 were explored in previous researches.…”

Section: Introductionmentioning

confidence: 99%

“Tree-Ring” Patterns of Halloysite Nanotubes by Agitation-Assisted Assembly for Guiding Cell Alignment

Chen

et al. 2022

ACS Appl. Nano Mater.

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Naturally occurring halloysite nanotubes (HNTs) are widely used in advanced materials area, but the preferred alignment of these nanotubes still lacks facile and versatile techniques. Here, we present a simple and efficient strategy for fabricating an ordered aligned HNT architecture on a glass substrate by drying their aqueous dispersion with the assistance of a magnetic rotor. The nanotubes were aligned into a “tree-ring” pattern, which was induced by a shear force provided by agitation during the water evaporation process. The factors, including nanotube charges, HNT concentrations, drying temperature, droplet volume, and rotor size, that influenced the formation of the HNT pattern were investigated. The birefringent phenomenon and micromorphology of the HNT tree-ring pattern were thoroughly studied with polarized optical microscopy and scanning electron microscopy. The perfectly ordered alignment of nanotube architectures can be achieved when the HNT concentration is above 5 wt %. The thickness and surface roughness of the HNT pattern increase with the HNT concentration. The macroscale topography of the HNT pattern can promote adhesion and proliferation of mouse fibroblast cells, and cells are grown along the nanotube’s alignment direction. This facile method for the fabrication of a patterned HNT array on a solid substrate has great potential in cellular-responsive templates such as tissue engineering scaffold materials.

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Electric field induced molecular orientation to construct the composite polymer electrolytes with vertically aligned ion diffusion pathways for stable solid-state lithium metal batteries

Zhao,

Gao,

Qin

et al. 2024

Chemical Engineering Journal

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Kinetics of electric field induced vertical orientation of halloysite nanotubes in photocurable nanocomposites

Cited by 5 publications

References 39 publications

Formation and Application of Polymer Spherulite-like Patterns of Halloysite Nanotubes by Evaporation-Induced Self-Assembly

Formation and Application of Polymer Spherulite-like Patterns of Halloysite Nanotubes by Evaporation-Induced Self-Assembly

“Tree-Ring” Patterns of Halloysite Nanotubes by Agitation-Assisted Assembly for Guiding Cell Alignment

Electric field induced molecular orientation to construct the composite polymer electrolytes with vertically aligned ion diffusion pathways for stable solid-state lithium metal batteries

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