Polymeric raspberry-like particles <i>via</i> template-assisted polymerisation

Lan, Yang; Liu, Ji; Eiser, Erika; Scherman, Oren A.

doi:10.1039/c9py00484j

Cited by 10 publications

(9 citation statements)

References 36 publications

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“…The right panel shows a TEM image of the fabricated PMMA-based rough particles. Images were adapted with permission from refs , , , and . Copyrights: 2016 ACS, 2007 ACS, 2011 ACS, and 2019 RSC, respectively.…”

Section: Synthesis Of Rough Particlesmentioning

confidence: 99%

“…The PMMA nanodomains were formed within the PS particles, developing a structure with a PMMA raspberry-like form embedded in a PS shell. By removing the PS through using solvent, the raspberry-like structure of PMMA particles was exposed 57 (Figure 4e). This template-etching method allows the production of uniform raspberry-like particles on a large scale, giving rise to potential applications in industry.…”

Section: ■ Synthesis Of Rough Particlesmentioning

confidence: 99%

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Particle Surface Roughness as a Design Tool for Colloidal Systems

Hsu

Isa

2020

Langmuir

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Control over the surface roughness of colloidal particles offers exciting opportunities to tailor the properties and the processing of a broad range of soft matter systems. Moreover, identifying surface roughness as a design parameter reveals the possibility to connect seemingly distinct phenomena and materials via the role played by roughness effects. In this feature article, we concisely review some approaches to synthesize and characterize rough colloidal particles, with a focus on model spherical colloids. We then discuss the impact that surface roughness has on both the high-shear rheology of dense suspensions and the stabilization of Pickering emulsions. Commenting on developments of our own research, we aim to offer an original perspective for a property-oriented development of colloidal particles that transcends classical divisions between materials and processes toward innovative solutions.

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Section: Synthesis Of Rough Particlesmentioning

confidence: 99%

Section: ■ Synthesis Of Rough Particlesmentioning

confidence: 99%

Particle Surface Roughness as a Design Tool for Colloidal Systems

Hsu

Isa

2020

Langmuir

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“…The main strategies for the preparation of raspberry‐like composite microparticles are as follows: polymerization processes, [ 21–23 ] linking of nanoparticle to the core surface, [ 24,25 ] seed growth process, [ 26,27 ] reduction of ions precursors in the presence of core particles [ 28,29 ] and electrostatically driven immobilization of nanoparticles at the surface of microparticles, which is also referred to as heterocoagulation or heteroaggregation. [ 30–34 ] Because of its universality, the electrostatically driven deposition of metal, [ 35,36 ] oxide, [ 37–39 ] and polymer nanoparticles [ 40,41 ] has attracted a special attention of the scientific community.…”

Section: Introductionmentioning

confidence: 99%

Hematite/Polystyrene Raspberry‐Like Microcomposites as Stable Support for Silver Nanoparticle Immobilization

Lupa

Oćwieja

Adamczyk

2021

Part & Part Syst Charact

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Among the methods utilized for the preparation of raspberry‐like microcomposites, due to its simplicity and universality, the electrostatically‐driven deposition of nanoparticles at the surface of microparticles is especially attractive. This process, leading to the formation of a single nanoparticle monolayer, is widely reported. On the other hand, no data concerning the electrostatically‐driven formation of nanoparticle bilayers at the surface of microparticles are reported. To fill this gap, the detailed investigation of the formation of silver/hematite nanoparticle bilayers at the surface of polystyrene microparticles is reported. First, the hematite/polystyrene raspberry‐like microcomposites are obtained by immobilization of hematite nanoparticles under an electrostatically‐driven process. The stability of hematite/polystyrene microcomposites at elevated temperatures up to 323 K is monitored using microelectrophoresis. No significant changes in the hematite nanoparticle layer coverage are observed after prolonged time of incubation. This proves the irreversible character of nanoparticle immobilization. Next, the hematite/polystyrene microcomposites are utilized as the interfaces for immobilization of negatively charged silver nanoparticles. This process is quantitatively described using electrokinetic measurements. The changes in the hydrodynamic diameter of microcomposites are also determined. Finally, the validity of the electrokinetic model used in this work for predicting the zeta potential of the silver/hematite/polystyrene microcomposites is confirmed.

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“…Such particles include Janus particles, 21 (Janus) sheets, 22,23 ellipsoids, 24 dumbbells 25 and rough particles. [26][27][28] Remarkably, particle shapes deviating from homogeneous spheres affect emulsification and give opportunities for different Pickering stabilization. 5,[29][30][31][32] For Janus particles, the combination of patch size and wetting contrast has been proved to affect the nature of emulsions.…”

Section: Introductionmentioning

confidence: 99%