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Related Concept Videos

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Stimuli-activated drug delivery systems are designed to release drugs in response to specific physical, chemical, or biological stimuli. These systems often utilize hydrogels—three-dimensional, hydrophilic polymer networks capable of swelling in aqueous environments and retaining significant fluid volumes. Upon exposure to particular stimuli, these hydrogels undergo structural transitions that allow the embedded drug to be released. Due to this adaptive behavior, such systems are also...
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Related Experiment Video

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Magnetic and Thermal-sensitive PolyN-isopropylacrylamide-based Microgels for Magnetically Triggered Controlled Release
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Thermosensitive ZrP-PNIPAM Pickering Emulsifier and the Controlled-Release Behavior.

Xuezhen Wang1, Minxiang Zeng, Yi-Hsien Yu

  • 1Soft matter center, Guangdong Province Key Laboratory on Functional Soft Condensed Matter, School of materials and energy, Guangdong University of Technology , Guangzhou, 510006, China.

ACS Applied Materials & Interfaces
|December 30, 2016
PubMed
Summary
This summary is machine-generated.

Janus and Gemini zirconium phosphate-poly(N-isopropylacrylamide) nanoplates stabilize oil/water emulsions. These thermosensitive Pickering emulsifiers offer rapid temperature responsiveness for controlled-release applications.

Keywords:
PNIPAMPickering emulsifierZrPasymmetric nanoplatescontrolled-releasethermosensitive

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Area of Science:

  • Materials Science
  • Colloid and Surface Chemistry
  • Polymer Chemistry

Background:

  • Zirconium phosphate (ZrP) is a two-dimensional layered material.
  • Poly(N-isopropylacrylamide) (PNIPAM) is a thermosensitive polymer.
  • Controlling interfacial tension is crucial for emulsion stability.

Purpose of the Study:

  • To synthesize asymmetric Janus and Gemini ZrP-PNIPAM monolayer nanoplates.
  • To investigate their ability to reduce interfacial tension and form stable oil/water emulsions.
  • To evaluate their potential as thermosensitive Pickering emulsifiers for controlled-release applications.

Main Methods:

  • Exfoliation of two-dimensional layered ZrP disks.
  • Covalent modification of ZrP surface with PNIPAM.
  • Characterization of nanoplates and their interfacial properties.
  • Evaluation of emulsion formation and stability.

Main Results:

  • Successfully obtained asymmetric Janus and Gemini ZrP-PNIPAM nanoplates.
  • Nanoplates significantly reduced oil/water interfacial tension.
  • Stable oil/water emulsions were produced.
  • PNIPAM grafting provided rapid temperature responsivity.

Conclusions:

  • ZrP-PNIPAM nanoplates act as effective Pickering emulsifiers.
  • The developed nanoplates exhibit thermosensitive behavior.
  • They are promising for controlled-release applications.