Preparation of “hard-soft” Janus polymeric particles via seeded dispersion polymerization in the presence of n-paraffin droplets

Hosseinzadeh, Soleyman; Saadat, Younes

doi:10.1039/c5ra05026j

Cited by 10 publications

(3 citation statements)

References 36 publications

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“…Porous polymer microspheres (PPMs), with crosslinking structures that exhibit low densities and high surface areas, have been widely used as catalyst carriers and in ion-adsorption, drug release, the biological sector, and so on. [1][2][3][4][5][6][7] In general, using incompatible components as porogens, PPMs can be synthesized through precipitation, 8,9 or by microfluidic, 10-13 dispersion [14][15][16] or suspension polymerization. 17,18 Precipitation polymerization can give rise to monodisperse products with controlled particle sizes (0.10-10 μm in diameter).…”

Section: Introductionmentioning

confidence: 99%

High porosity microspheres with functional groups synthesized by thiol–yne click suspension polymerization

et al. 2016

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Section: Introductionmentioning

confidence: 99%

High porosity microspheres with functional groups synthesized by thiol–yne click suspension polymerization

et al. 2016

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“…Morphology control of polymer particles is crucial for their application as functional materials. Extensive research into morphology control has thus been conducted that focuses on both thermodynamic and kinetic aspects of the control. − Hollow polymer particles have been used in several industrial applications such as lightweight materials, organic white pigments, and microcapsules. − We have previously proposed a facile method for the preparation of micrometer-sized cross-linked polymer particles having hollow structures by suspension polymerization, which we termed the self-assembling of phase-separated polymer (SaPSeP) method. , We have also clarified the formation mechanism − involved in the SaPSeP method in detail along with the encapsulation of various materials using this method. , …”

Section: Introductionmentioning

confidence: 99%

Preparation of Flattened Cross-Linked Hollow Particles by Suspension Polymerization in a Solid Dispersion Medium

2017

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Flattened cross-linked hollow poly(divinylbenzene) (PDVB) particles with encapsulated n-hexadecane (HD) were successfully prepared through suspension polymerization using the self-assembling of phase-separated polymer (SaPSeP) method, in which the solid dispersion medium was gelled by gellan gum and compressed. The solid phase induced by gellan gum can be easily changed to a liquid state by heating, allowing the obtained particles to be easily recovered after polymerization. When the polymerization was conducted in the solid dispersion medium without compression, spherical hollow PDVB/HD composite particles were obtained. In contrast, when the polymerization was conducted with the compression of the solid dispersion medium, flattened hollow PDVB/HD composite particles were obtained. The shape of the flattened hollow polymer particles was controlled by changing the compression ratio of the solid phase, and the size could also be controlled by changing the DVB/HD droplet size using the Shirasu porous glass membrane-emulsification technique. Furthermore, flattened hollow particles larger than 20 μm in size were obtained, but it was difficult to obtain spherical hollow particles of such large size using the SaPSeP method.

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“…3,4 Particles with selected surface properties and tunable size can be easily obtained from a wide variety of monomers via dispersion polymerization. These particles have found a wide range of applications and become a very hot topic recently.…”

Section: Introductionmentioning

confidence: 99%

Monte Carlo simulation of the dispersion polymerization of styrene

Mahjub

2016

RSC Adv.

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The Monte Carlo kinetic simulation method was performed to simulate the entire process of the dispersion polymerization of styrene stabilized by polyvinyl pyrrolidone (PVP) in ethanol. The equilibrium distributions of each component between the continuous phase and the particle phase were calculated by a thermodynamic model. In order to calculate the time course of the concentration of different species in each phase a kinetic model was proposed for the mechanism of dispersion polymerization which took into account the reactions both in the ethanol phase and particles. The role of the stabilizer and aggregation by Brownian diffusion and aggregation by the shear stress of the fluid was quantified for simulating the time course of particle concentration and particle size. The simulation results indicated that aggregation due to Brownian diffusion was the dominant mechanism of aggregation in dispersion polymerization. The effect of monomer concentration was investigated on the particle formation stage by simulating the monomer conversion, particle diameter and particle concentration. Subsequently, the particle growth stage was simulated after sufficient stabilizer was absorbed on the particle surface. The Monte Carlo simulation results for the monomer conversion, particle diameter and particle concentration were in agreement with experimental data.

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Preparation of “hard-soft” Janus polymeric particles via seeded dispersion polymerization in the presence of n-paraffin droplets

Abstract: A newly emerged class of Janus polymer particles, so-called “hard-soft” ones, were produced using seeded dispersion polymerization (SDP) of 2-ethylhexyl methacrylate (EHMA) with polystyrene (PS) particles in the presence of n-paraffin droplets.

Cited by 10 publications

References 36 publications

High porosity microspheres with functional groups synthesized by thiol–yne click suspension polymerization

High porosity microspheres with functional groups synthesized by thiol–yne click suspension polymerization

Preparation of Flattened Cross-Linked Hollow Particles by Suspension Polymerization in a Solid Dispersion Medium

Monte Carlo simulation of the dispersion polymerization of styrene

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