Surface-mediated buckling of core–shell spheres for the formation of oriented anisotropic particles with tunable morphologies

Zhang, Yifan; Lu, Teng; Zeng, Xiping; Zhou, Haijun; Guo, Hongxia; Bonaccurso, Elmar; Butt, Hans‐Jürgen; Wang, Jianjun; Song, Yanlin; Jiang, Lei

doi:10.1039/c2sm27582a

Cited by 8 publications

(9 citation statements)

References 35 publications

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“…A wide variety of post‐treatment techniques, including solvent‐absorbing/releasing, [ 109,110 ] general solvent evaporation, [ 111–121 ] microfluidic emulsification/emulsion–solvent evaporation, [ 122–128 ] electrospraying/solvent evaporation, [ 129–137 ] electrospinning/solvent evaporation, [ 138,139 ] templating method, [ 140–166 ] treatment on core–shell particles [ 167–173 ] and self‐assembly of polymer [ 174–176 ] have been developed for dimpled polymer particles syntheses.…”

Section: Dimpled Polymer Particlesmentioning

confidence: 99%

“…The core–shell polymer particle can be considered as an ideal precursor for the formation of dimpled polymer particle since the shell is easy to buckle onto the core after appropriate treatment. Various treatment means, including alkali treatment, [ 167–170 ] vapor annealing, [ 171 ] swelling–deswelling [ 172 ] and pyrolysis, [ 173 ] have been proved to be effective to prepare dimpled polymer particles, as discussed below.…”

Section: Dimpled Polymer Particlesmentioning

confidence: 99%

“…Song and co‐workers reported a controllable buckling process of core–shell polymer spheres by vapor annealing. [ 171 ] In this method, monodisperse PS core‐crosslinked PS sulfonate shell spheres were first placed onto a substrate, followed by annealing with a saturated toluene vapor that could dissolve the PS core. The buckling of the shell occurred when enough PS core leaked out from the shell without breakage of the shell.…”

Section: Dimpled Polymer Particlesmentioning

confidence: 99%

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Synthetic Strategies for Polymer Particles with Surface Concavities

Zou

2022

Macromol. Rapid Commun.

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Over the past decade or so, there has been increasing interest in the synthesis of polymer particles with surface concavities, which mainly include golf ball‐like, dimpled and surface‐wrinkled polymer particles. Such syntheses generally can be classified into direct polymerization and post‐treatment on preformed polymer particles. This review aims to provide an overview of the synthetic strategies of such particles. Some selected examples are given to present the formation mechanisms of the surface concavities. The applications and future development of these concave polymer particles are also briefly discussed.

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Section: Dimpled Polymer Particlesmentioning

confidence: 99%

Section: Dimpled Polymer Particlesmentioning

confidence: 99%

Section: Dimpled Polymer Particlesmentioning

confidence: 99%

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Synthetic Strategies for Polymer Particles with Surface Concavities

Zou

2022

Macromol. Rapid Commun.

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“…Once a wrinkle is formed, it does not change in position or in width, but it becomes deeper with ongoing irradiation. Wrinkles depend on the difference in Young's modulus of the bulk material and the hard skin layer [5]. Thus, the thickness of the metal layer should have an effect.…”

Section: Objectivementioning

confidence: 99%

“…Instead of ozone, a wet chemical oxidation can also be used [4]. Simple swelling and de-swelling of a polymer particle fixed on a substrate also caused a buckling and the formation of surface dimples [5]. Inorganic core-shell microparticles can show dimple structures by thermal treatment, for example, particles with an Ag-core and SiO 2 -shell [6].…”

Section: Introductionmentioning

confidence: 99%

Pollen-like Particles can be Prepared by Exposure of Polymer Microparticles to an Electron Beam

Herzog¹,

Uchiya²,

Karthaus³

2016

Matters (Zür.)

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Plant pollen shows a wide variety of surface structures that develop during pollen sporogenesis. Some of the structures are similar to wrinkle structures that are formed when a layered material with different Young's moduli is compressed. Here we report on the formation of wrinkled surface structures in polymer particles that is caused by electron beam irradiation of poly(methyl methacrylate) microparticles.

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“Suction Caps”: Designing Anisotropic Core/Shell Microcapsules with Controlled Membrane Mechanics and Substrate Affinity

Jerri

Jacquemond

Hansen

et al. 2016

Adv Funct Materials

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Core/shell microcapsules with low‐permeability membranes and controlled morphology are crucial for the delivery and controlled release of fragrance molecules, pharmaceuticals, inks, or vitamins. Design criteria for next generation microcapsules must include chemical and mechanical stability, and also provide enhanced substrate interactions to improve deposition onto relevant complex surfaces. Here, a coupled approach is presented to synthesize core/shell delivery systems by interfacial polymerization to enhance both the microcapsule–substrate interactions and the mechanical properties of the capsules to induce a burst‐type release. By combining membrane synthesis, nonlinear mechanics, interfacial rheology, analysis of mass transfer, and capsule morphology generated during interfacial polymerization, large permanent deformations into the capsule geometry are programmed, resulting in chemically stable, yet mechanically rupturing microcapsules with anisotropic geometry. To promote interactions and capsule adhesion onto complex substrates, the capsule contact area is controlled to form prominent “suction cup” shaped rims. These capsules have favorable, far‐reaching electrostatic interactions with oppositely charged substrates such as glass, hair, skin, or fabric. By modulating membrane mechanical properties and morphology during synthesis, formulation‐independent physical criteria are used to improve the overall performance of a functional delivery system while expanding knowledge of the key parameters influencing the interfacial polymerization process and membrane formation.

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Surface-mediated buckling of core–shell spheres for the formation of oriented anisotropic particles with tunable morphologies

Cited by 8 publications

References 35 publications

Synthetic Strategies for Polymer Particles with Surface Concavities

Synthetic Strategies for Polymer Particles with Surface Concavities

Pollen-like Particles can be Prepared by Exposure of Polymer Microparticles to an Electron Beam

“Suction Caps”: Designing Anisotropic Core/Shell Microcapsules with Controlled Membrane Mechanics and Substrate Affinity

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