The stepwise organization of nanoparticles into a Pickering emulsion

Xu, Jingjing; Xu, Wei; Sun, Dayin; Xiao, Haihua; Yang, Zhenzhong

doi:10.1039/d0sm02028a

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…It is noted that the NPs form a monolayer rather than aggregation at the oil/water interface (Figure d). This implies that the stabilization is arisen from the amphiphilic performance of the dimer rather than the Pickering effect . Otherwise, the dimers would aggregate into large clusters at the interface.…”

Section: Resultsmentioning

confidence: 99%

“…This implies that the stabilization is arisen from the amphiphilic performance of the dimer rather than the Pickering effect. 17 Otherwise, the dimers would aggregate into large clusters at the interface. Another stable emulsion of cyclohexane/water (0.1 mL/1.0 mL) was achieved at 20 °C in the presence of 1.0 mg of the dimer.…”

Section: Synthesis Of the Dimer Of Cpvst-b-pmst-fe 3 O 4 @ Sio 2 By E...mentioning

confidence: 99%

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Large-Scale Synthesis of Reactive Janus Inorganic/Polymer Colloidal Dimer

Yang,

Li,

Sun

et al. 2024

Macromolecules

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A new method is proposed to large-scale synthesize reactive Janus inorganic/polymer colloidal dimers by electrostatics-mediated intramolecular crosslinking of the tethered diblock copolymer single-chain of PVSt-b-PmSt at an example inorganic NP of Fe 3 O 4 @SiO 2 . Tethering the single-chain is achieved by terminating the anionic living polymer onto the chloromethylphenyl-group capped NP. While the electrostatic interaction is introduced by complexation of the mercaptoacetic acid (MA) clicked PVSt block with 1-methylimidazole (MI), the intramolecular crosslinking is achieved with 1,6-hexanediisothiocyanate (HDI). The example dimer of cPVSt-b-PmSt-Fe 3 O 4 @SiO 2 could be synthesized in a highly concentrated dispersion up to 100 mg/mL. The amphiphilic Janus colloidal dimer is effective to manipulate the stabilized emulsion droplets with a magnet. The parent colloidal dimer is highly reactive with residual chloromethylphenyl-, cyanate, and carboxylic acid groups at different sites to assist deriving a family of functional dimers by simple modifications.

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Section: Resultsmentioning

confidence: 99%

Section: Synthesis Of the Dimer Of Cpvst-b-pmst-fe 3 O 4 @ Sio 2 By E...mentioning

confidence: 99%

Large-Scale Synthesis of Reactive Janus Inorganic/Polymer Colloidal Dimer

Yang,

Li,

Sun

et al. 2024

Macromolecules

Self Cite

View full text Add to dashboard Cite

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Uniformly sized and self‐assembled maleic anhydride/vinyl acetate/acrylamide terpolymer core–shell nanoparticles fabricated by self‐stabilized precipitation polymerization

Li,

Zhao,

Yang

2024

Journal of Polymer Science

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Copolymer particles containing anhydride and amide groups are widely utilized in oilfields and medication releases because of their high specific surface area, excellent biocompatibility, and water solubility. Here, the self‐stabilized precipitation (2SP) method was used to create maleic anhydride (MAH)/vinyl acetate (VAc)/acrylamide (AM) terpolymer (PMVA) microspheres. Terpolymer composition was highly dependent on monomer feed ratio and microspheres with diameters in the range of about 228–1048 nm could be prepared by altering reaction parameters. Notably, AM was consumed completely within a short period of time owing to high monomer reactivity, MAH and VAc continuing to copolymerize in an alternating manner. Thus self‐assembled core–shell particle with poly(MAH‐co‐VAc‐co‐AM) as core and poly(MAH‐alt‐VAc) as shell (PMVA@PMV) was readily achieved. PMVA particles can be scaled up to application platforms of hydrogel, oil recovery, and scale inhibition. Meanwhile, this contribution broadened the preparation process of core–shell material and can be applied to interface materials by simple modification.

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The stepwise organization of nanoparticles into a Pickering emulsion

Abstract: Homogeneous composite nanoparticles undergo stepwise organization from individual nanoparticles that capture oil to stable aggregates to the formation of a Pickering emulsion as oil is continuously fed into the aqueous dispersion.

Cited by 2 publications

References 13 publications

Large-Scale Synthesis of Reactive Janus Inorganic/Polymer Colloidal Dimer

Large-Scale Synthesis of Reactive Janus Inorganic/Polymer Colloidal Dimer

Uniformly sized and self‐assembled maleic anhydride/vinyl acetate/acrylamide terpolymer core–shell nanoparticles fabricated by self‐stabilized precipitation polymerization

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