Top-down Approach for Fabrication of Polymer Microspheres by Interfacial Engineering

Fan, Yue; Wang, Dehui; Yang, Jing; Song, Jianing; Li, Xiaomei; Zhang, Chenglin; Wang, Dongsheng; Chen, Longquan; Cui, Jiaxi; Deng, Xu

doi:10.1007/s10118-020-2453-3

Cited by 5 publications

(6 citation statements)

References 40 publications

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“…Then, microspheres encapsulated with drugs are obtained after the cross-linking of the monomer. The earlier studies adopted the variant SHS (e.g., PS, a fractal-like layer of the candle soot-based SHS 110 ) to fabricate spherical drug-loading hydrogels after going through a crosslinking process. 105,111 These hydrogels achieved 100% drug encapsulation and the desired release rate.…”

Section: Superhydrophobic Surface-mediated Methodsmentioning

confidence: 99%

Fabrication of polymeric microspheres for biomedical applications

Li,

Wang

et al. 2024

Mater. Horiz.

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Section: Superhydrophobic Surface-mediated Methodsmentioning

confidence: 99%

Fabrication of polymeric microspheres for biomedical applications

Li,

Wang

et al. 2024

Mater. Horiz.

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“…In order to improve the particle preparation method, Fan et al produced uniformly sized microspheres with widely ranged diameters by harnessing interfacial engineering-induced PRI during the polymer microsphere formation. [65] In addition, Song et al used the superamphiphobic surface to induce the unconstrained polymer solution columns which could disperse into uniform droplets spontaneously, based on the PRI. As a result, spherical particles with a size from 1 mm to 1 μm were formed within seconds at ambient temperatures (Figure 5E).…”

Section: Particle Preparationmentioning

confidence: 99%

Bioinspired Plateau–Rayleigh Instability on Fibers: From Droplets Manipulation to Continuous Liquid Films

Li,

Shi,

et al. 2024

Adv Funct Materials

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The Plateau–Rayleigh instability (PRI) of a liquid column, which always spontaneously breaks into droplets to minimize surface energy, underlies a variety of fascinating phenomena in daily life and industrial applications. Different from the free liquid column, the evolution of the liquid film on a fiber involves solid‐liquid interfaces which allow for regulating the PRI. Recently, natural fibers with certain topologies have witnessed various dynamic liquid behaviors from droplet manipulation to continuous liquid films. Tailoring the topology of local curved liquid film by the structural‐confinement is the key to manipulating liquids, where the asymmetric Laplace pressure generated by the asymmetric/non‐spherical liquid film promotes the liquid motion. In nature, the spider silk collects droplets efficiently by the spindle‐knot structure; while the mulberry silk enables a smooth surface‐coating on dual‐parallel fibers. Drawing inspirations, many artificial structured fibers are developed to precisely regulate liquid behaviors in the form of either separated droplets or continuous liquid films, which have demonstrated applications as fluidic coating, micro‐patterning, and materials fabrication. Here, recent research progress on bioinspired fibrous PRI from the viewpoints of tailoring the Laplace pressure by rationally designing the surface topology, which offers inspiration for liquid manipulation using open fibrous media, is reviewed.

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“…46 By combining the excellent liquid-repellency performance of the superamphiphobic surface with interfacial engineering, a multifunctional synthesis platform of polymer microspheres was established. 47 Polymer microspheres with uniform size, composition, and surface properties can be produced readily from microfibers on superamphiphobic surfaces by a deposit− cut−anneal process (Figure 8e). By taking advantage of the microfluidic spinning and laser cutting, patterned microfibers with a controlled length were obtained on superamphiphobic surfaces first.…”

Section: Polymer Microsphere Synthesismentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

Durable Super-repellent Surfaces: From Solid–Liquid Interaction to Applications

Wang

Yang

et al. 2021

Acc. Mater. Res.

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Conspectus A super-repellent surface is a type of liquid-repellency material that allows for various liquid drops to bead up, roll off, or even bounce back. Known for its ability to remain dry, perform self-cleaning, and have a low adhesion, a super-repellent surface presents great advantages in a number of applications. These include antifogging, anti-icing, oil/water separation, and fluid drag reduction. To fend off the liquids or drops, super-repellent surfaces combine the merits of surface chemistry and physical structure. By taking advantage of a low surface energy to prevent liquid from spreading, the super-repellent surfaces utilize the micronano structure to provide a framework that confines the solid–liquid interactions. Compared to beading up the drop of water, the repellence of liquid with low surface tension requires the subtle design of surface structure to resist the wetting of liquids. However, the inherent instabilities of the fragile micronano structure of super-repellent surfaces and solid–liquid interactions further make the fabrication of super-repellent surfaces complex to withstand dynamic environments (friction or wear) during application. In addition, the transparency and thermal stability of super-repellent surfaces are also the restrictive factors in some special application scenarios. To solve these challenges, durable super-repellent surfaces that can repel various liquids, possess robust mechanical and thermal stability, and show high transparency have been explored extensively in recent years. In this Account, we systematically review our recent efforts to promote the super-repellent surfaces for real-world applications. Super-repellent surfaces that exhibit excellent resistance to various liquids, including liquids with low surface tension or high viscosity, were subtly designed and fabricated in some manner. Considering the stability of the wetting state at the solid–liquid interface, we established an evaluation system that includes highly curved surfaces and high Laplace-pressure conditions. To further perfect the wetting mechanism at the solid–liquid interactions, the dynamic wettability of super-repellent surfaces regulated by surface charge enrichment that was generated from solid–liquid interface separation was investigated. To resolve the bottleneck problem of the mechanical stability of super-repellent surfaces in real-world applications, a new decoupling material design mechanism was proposed, with a nanostructure that maintains water repellency and a microstructure providing durability. On the basis of the performance of the liquid-repellency, transparency, and mechanical and thermal stability of the super-repellent surfaces, a series of applications were demonstrated, such as microsphere synthesis, drop transportation and manipulation, and self-cleaning solar panels. Finally, a concise summary of this Account, including challenges and opportunities in super-repellent materials, has been provided. This research provides important guidance on solid–liquid interactions for ...

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Top-down Approach for Fabrication of Polymer Microspheres by Interfacial Engineering

Cited by 5 publications

References 40 publications

Fabrication of polymeric microspheres for biomedical applications

Fabrication of polymeric microspheres for biomedical applications

Bioinspired Plateau–Rayleigh Instability on Fibers: From Droplets Manipulation to Continuous Liquid Films

Durable Super-repellent Surfaces: From Solid–Liquid Interaction to Applications

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