Interfacial behavior of core–shell composite nanoparticles under compression and shear: Influence of polymer shell thickness

Yu, Kai; Zhang, Huagui; Tangparitkul, Suparit; Jiang, Jiatong; Hodges, Chris; Harbottle, David

doi:10.1016/j.jcis.2022.01.069

Cited by 8 publications

(2 citation statements)

References 46 publications

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“…[25] Notably, similar advantages have also been reported for rigid particles sterically stabilized with various polymer coatings, which have shown a remarkable ability to stabilize bubbles and drops compared to bare particles. [26][27][28] The self-assembly of core-shell particles, and more generally of microgels at fluid interfaces has been extensively studied using the pendant drop technique, interfacial rheology, Langmuir troughs, static light scattering, and ex-situ visualization of the colloids after transferring from the fluid interface onto solid supports. [10,24,[29][30][31][32] Optical and confocal microscopy can instead provide insights into the dynamics of the adsorbed particles, as in the case of colloids with fluorescent or sufficiently large cores.…”

Section: Introductionmentioning

confidence: 99%

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Exploring the 3D Conformation of Hard‐Core Soft‐Shell Particles Adsorbed at a Fluid Interface

et al. 2023

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The encapsulation of a rigid core within a soft polymeric shell allows obtaining composite colloidal particles that retain functional properties, e.g., optical or mechanical. At the same time, it favors their adsorption at fluid interfaces with a tunable interaction potential to realize tailored two‐dimensional (2D) materials. Although they have already been employed for 2D assembly, the conformation of single particles, which is essential to define the monolayer properties, has been largely inferred via indirect or ex situ techniques. Here, by means of in situ atomic force microscopy experiments, the authors uncover the interfacial morphology of hard‐core soft‐shell microgels, integrating the data with numerical simulations to elucidate the role of the core properties, of the shell thicknesses, and that of the grafting density. They identify that the hard core can influence the conformation of the polymer shells. In particular, for the case of small shell thickness, low grafting density, or poor core affinity for water, the core protrudes more into the organic phase, and the authors observe a decrease in‐plane stretching of the network at the interface. By rationalizing their general wetting behavior, such composite particles can be designed to exhibit specific inter‐particle interactions of importance both for the stabilization of interfaces and for the fabrication of 2D materials with tailored functional properties.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Exploring the 3D Conformation of Hard‐Core Soft‐Shell Particles Adsorbed at a Fluid Interface

et al. 2023

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Steerable Interfacial Assembly of 1D Amyloid‐Like Protein Nanocomposites for Enhanced Nanoherbicide Utilization

Yu,

Chen,

Zhang

et al. 2024

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Conventional herbicide formulations suffer from serious problems such as easy drift, run‐off and scouring into the environment, which pose enormous threats to human health and environmental safety. Herein, an innovative strategy is proposed to prepare oil‐in‐water nanoemulsions with long‐term stability, enhanced droplet deposition, and improved nanoherbicide adhesion via steerable interfacial assembly of 1D amyloid‐like protein nanocomposites. Bovine serum albumin (BSA) undergoes rapid amyloid‐like aggregation upon reduction of its disulfide bond. The resulting phase‐transitioned BSA (PTB) oligomers instantly self‐assemble on the surface of cellulose nanofibers (CNF) to form the 1D PTB/CNF nanocomposites, which greatly expands the parameter space for interfacial assembly of amyloid‐like proteins. The PTB/CNF nanocomposites exhibit excellent interfacial activity, enabling spontaneous adsorption at the oil‐water interface to stabilize nanoemulsion. The excess PTB/CNF nanocomposites would also self‐assemble at the air‐aqueous interface upon spraying, resulting in efficient droplet deposition on (super)hydrophobic leaves. The deposited nanoherbicides show excellent resistance to wind/rain corrosion due to the robust amyloid‐mediated adhesion, with a retention rate of more than 80% after severe scouring. Consequently, herbicide applications can be reduced by at least 30% compared to commercial emulsifiable concentrates, showing greater herbicidal efficiency. This study provides novel insights and approaches to promote sustainable agricultural development.

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Full life circle of micro-nano bubbles: Generation, characterization and applications

Jia

Zhu

Chen

et al. 2023

Chemical Engineering Journal

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Interfacial behavior of core–shell composite nanoparticles under compression and shear: Influence of polymer shell thickness

Cited by 8 publications

References 46 publications

Exploring the 3D Conformation of Hard‐Core Soft‐Shell Particles Adsorbed at a Fluid Interface

Exploring the 3D Conformation of Hard‐Core Soft‐Shell Particles Adsorbed at a Fluid Interface

Steerable Interfacial Assembly of 1D Amyloid‐Like Protein Nanocomposites for Enhanced Nanoherbicide Utilization

Full life circle of micro-nano bubbles: Generation, characterization and applications

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