Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Rapid laboratory identification of fibrinogen Longmont: a case report and literature review.

Frontiers in medicine·2026
Same author

Chen mouse scale for early-stage motor assessment in mouse thoracic spinal cord contusion models.

Scientific reports·2026
Same author

TB-Genaly: A Multicenter Evaluated Whole Genome Sequencing Pipeline for Tuberculosis Drug Resistance Assessment and Transmission Analysis.

International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases·2026
Same author

Antiviral suppression and immune memory after nirmatrelvir-ritonavir.

The Lancet. Microbe·2026
Same author

Catalytic Hydrogen Peroxide Production Via 2e<sup>-</sup> ORR at Low Temperature and Room Pressure.

The journal of physical chemistry letters·2026
Same author

<i>Streptobacillus moniliformis</i> bacteremia in an afebrile patient: A rare case report.

IDCases·2026

Related Experiment Video

Updated: Oct 11, 2025

Stabilizing Hepatocellular Phenotype Using Optimized Synthetic Surfaces
08:50

Stabilizing Hepatocellular Phenotype Using Optimized Synthetic Surfaces

Published on: September 26, 2014

10.4K

pH-Responsive Pickering high internal phase emulsions stabilized by Waterborne polyurethane.

Jianhui Wu1, Xin Guan2, Chunhua Wang3

  • 1Department of Biomass and Leather Engineering, Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China; Department of Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong.

Journal of Colloid and Interface Science
|December 6, 2021
PubMed
Summary

Anionic waterborne polyurethane (WPU) nanoparticles were used to create pH-responsive Pickering high internal phase emulsions (HIPEs). These WPU-stabilized HIPEs show excellent stability and can be repeatedly emulsified and demulsified by adjusting pH.

Keywords:
Pickering high internal phase emulsionsRecyclableWaterborne polyurethanepH-responsive

More Related Videos

Cellular Affinity of Particle-Stabilized Emulsion to Boost Antigen Internalization
10:06

Cellular Affinity of Particle-Stabilized Emulsion to Boost Antigen Internalization

Published on: September 2, 2022

2.0K
Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application
11:49

Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application

Published on: March 8, 2019

12.8K

Related Experiment Videos

Last Updated: Oct 11, 2025

Stabilizing Hepatocellular Phenotype Using Optimized Synthetic Surfaces
08:50

Stabilizing Hepatocellular Phenotype Using Optimized Synthetic Surfaces

Published on: September 26, 2014

10.4K
Cellular Affinity of Particle-Stabilized Emulsion to Boost Antigen Internalization
10:06

Cellular Affinity of Particle-Stabilized Emulsion to Boost Antigen Internalization

Published on: September 2, 2022

2.0K
Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application
11:49

Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application

Published on: March 8, 2019

12.8K

Area of Science:

  • Materials Science
  • Colloid and Surface Chemistry

Background:

  • Waterborne polyurethane (WPU) nanoparticles, with hydrophobic cores and hydrophilic shells, are promising for creating advanced emulsions.
  • Their inherent pH-responsive functional groups make them suitable for tunable Pickering high internal phase emulsions (HIPEs).

Purpose of the Study:

  • To synthesize and characterize anionic WPU nanoparticles with varying 2,2-bis(hydroxymethyl)propionic acid (DMPA) content.
  • To investigate the preparation and properties of pH-responsive Pickering HIPEs stabilized by these WPU nanoparticles.

Main Methods:

  • Anionic WPU nanoparticles were synthesized via polyaddition.
  • The interfacial behaviors of WPU and the morphology, stability, and rheology of Pickering HIPEs were studied under varying conditions (particle concentration, internal phase fraction, oil type, pH).

Main Results:

  • Oil-in-water (O/W) Pickering HIPEs with tunable morphology and pH-responsiveness were successfully prepared.
  • WPU concentration, internal phase fraction, and oil type significantly influenced emulsion formation and droplet size.
  • The WPU-stabilized HIPEs exhibited high stability, shear sensitivity, and thixotropic recovery.
  • Over ten emulsification-demulsification cycles were achieved by pH adjustment due to the pH-dependent properties of WPU nanoparticles.

Conclusions:

  • Anionic WPU nanoparticles are effective stabilizers for pH-responsive Pickering HIPEs.
  • These WPU-stabilized HIPEs demonstrate significant potential for applications in oil transportation, emulsion polymerization, and catalysis.