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Robust cellulose-based hydrogel marbles with excellent stability for gas sensing.

Na Li1, Hongying Wanyan1, Shengchang Lu2

  • 1College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350108, PR China.

Carbohydrate Polymers
|February 6, 2023
PubMed
Summary

Researchers developed robust, biocompatible hydrogel marbles using cellulose. These advanced liquid marbles exhibit superior mechanical stability and reusability, showing great potential for applications like gas sensing.

Keywords:
CelluloseGas sensingHydrogelMarbleStability

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Liquid marbles offer unique properties for various applications.
  • Improving the stability and biocompatibility of liquid marbles is crucial for broader use.
  • Cellulose-based materials are attractive due to their biocompatibility and sustainability.

Purpose of the Study:

  • To fabricate robust and biocompatible cellulose-based liquid marbles.
  • To enhance the mechanical properties and stability of liquid marbles.
  • To explore the potential of these hydrogel marbles as reusable gas sensors.

Main Methods:

  • Fabrication of liquid marbles using cellulose acetate and 3-allyloxy-2-hydroxy-propyl-cellulose (AHP-cellulose).
  • Gelling of liquid marbles into hydrogel marbles via blue-light-induced polymerization of AHP-cellulose.
  • Characterization of mechanical properties (rupture height, bouncing) and ammonia gas sensing capabilities.

Main Results:

  • Cellulose-based liquid marbles demonstrated excellent stability and biocompatibility.
  • Hydrogel marbles exhibited significantly enhanced mechanical properties, withstanding drops from considerable heights and showing high elasticity.
  • The hydrogel marbles proved effective for ammonia detection with a low detection limit and reusability.

Conclusions:

  • The developed cellulose-based hydrogel marbles possess superior mechanical strength and stability compared to traditional liquid marbles.
  • These hydrogel marbles are highly promising for applications in microreactors, biomedicine, and controlled release.
  • Their reusability and sensitivity make them excellent candidates for chemical and environmental gas sensing applications.