Effect of the addition of salt to Pickering emulsion polymerizations using polymeric nanogels as stabilizers

Lotierzo, Andrea; Meaney, Shane P.; Bon, Stefan Antonius Franciscus

doi:10.1039/c9py01240k

Cited by 9 publications

(7 citation statements)

References 45 publications

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“…It might be the best if some materials behave as a simple fluid but provide yield stress if they are confined between droplets/bubbles. Researchers have used gelation of particles for the continuous phase for this purpose. − Soft microgel particles were used to stabilize HIPEs by activating gelation between adsorbed particles at the different droplets, presumably building a yield stress only when particles are in contact. ,, It is expected that effective strategies similar to this gelation for stable HIPEs and foams will be developed.…”

Section: Stabilizersmentioning

confidence: 99%

Processable Composites with Extreme Material Capacities: Toward Designer High Internal Phase Emulsions and Foams

Moon

Kim

et al. 2020

Chem. Mater.

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High internal phase emulsions (HIPEs) and foams are ubiquitous in our daily lives. They are considered f luid composites with an extremely high-volume fraction of f luid fillers. As all other composite materials do, HIPEs and foams exhibit enhanced properties compared with the simple base fluids without liquid/gas fillers. They can disperse a huge amount of immiscible fluids in other fluids, and fluid fillers remarkably change their physicochemical properties, especially their rheological properties. Their unique structural and compositional features make this material special: A large amount of a dispersed phase is in a very small amount of a continuous phase, and they have an unusual flow behavior as soft glassy materials. Because their fluid nature allows many other materials (e.g., small molecules, polymers, colloids) to be easily dispersed inside, they have a huge potential to be transformed into functional materials that cannot easily be obtained with other hard materials. Here, we summarize the recent progress on HIPEs and foams, particularly in terms of four themes: (1) fabrication techniques, (2) stabilizers and their requirements, (3) flow behavior relating to rheological properties, and (4) porous materials templated from HIPEs and foams. We also discuss future directions and what needs to be done for each theme. Finally, although there have been numerous studies on HIPEs and foams, we present the general outlook for HIPEs and foams to better understand them so that they can be applied to new and unprecedented applications.

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Section: Stabilizersmentioning

confidence: 99%

Processable Composites with Extreme Material Capacities: Toward Designer High Internal Phase Emulsions and Foams

Moon

Kim

et al. 2020

Chem. Mater.

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“…61 Going a step beyond, MM micelles were also covalently crosslinked and used as nanogel stabilizers. 62,63 To the best of our knowledge the use of MMs as reactive stabilizers in water-based mini-emulsion polymerization has received little attention. This is what this study is about.…”

Section: Introductionmentioning

confidence: 99%

ω-Unsaturated methacrylate macromonomers as reactive polymeric stabilizers in mini-emulsion polymerization

2022

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“…However, various limitations such as large seed sizes, monomer swelling requirement, complex post modification process (to become surface active), and low solid contents have been restricted possible scale-up. Recent advancements in controlled living free radical emulsion polymerization show potential to address these drawbacks [24][25][26]. By combining RAFT-based polymerizationinduced self-assembly (PISA) and the principle developed by Sheu et al [18], Pham et al [26] synthesized 25-nm amphiphilic football-and snowman-shaped particles which were useful as stabilizers for subsequent surfactant-free emulsion polymerization of MMA and BA.…”

Section: Introductionmentioning

confidence: 99%

Janus particles by simplified RAFT-based emulsion polymerization process for polymer coating

Nguyen

Huynh

Serelis³

et al. 2022

Colloid Polym Sci

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We describe a simplified method to synthesize film forming polymer Janus particles by phase separation during RAFT-based free radical emulsion polymerization. Fully crosslinked snowman- or football-shaped polystyrene Janus particles (PSJPs) were first produced in a one-step batch process using amphiphilic triblock macro-RAFT copolymers as stabilizers. Such particles were in turn employed as seeds in a continuous emulsion polymerization in which a monomer mixture of methyl methacrylate (MMA) and butyl acrylate (BA) (1/1 by weight) was constantly injected into the reaction in the presence of a water soluble initiator. The added monomers wetted seed particle surface and their polymerization led to formations of 93-nm film forming single- or two-headed Janus particles. The resulted latex was successfully used to disperse and encapsulate solid calcite extender. Graphical abstract

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Effect of the addition of salt to Pickering emulsion polymerizations using polymeric nanogels as stabilizers

Abstract: Nanogels made from crosslinked block copolymer micelles are used as stabilizers in the Pickering emulsion polymerization of styrene.

Cited by 9 publications

References 45 publications

Processable Composites with Extreme Material Capacities: Toward Designer High Internal Phase Emulsions and Foams

Processable Composites with Extreme Material Capacities: Toward Designer High Internal Phase Emulsions and Foams

ω-Unsaturated methacrylate macromonomers as reactive polymeric stabilizers in mini-emulsion polymerization

Janus particles by simplified RAFT-based emulsion polymerization process for polymer coating

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