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Related Experiment Video

Updated: Jul 30, 2025

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications

Published on: June 2, 2017

Versatile Fabrication of Polymer Microcapsules with Controlled Shell Composition and Tunable Performance via

Kaiyun Wu¹, Ziyue Wei¹, Ren Liu¹

¹The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China.

Langmuir : the ACS Journal of Surfaces and Colloids

|May 16, 2023

Summary

Researchers created polymer microcapsules using UV-curable prepolymers and photopolymerization. Adjusting shell composition and cross-linking density, particularly with epoxy acrylates, enhanced microcapsule properties like impermeability and mechanical strength.

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Area of Science:

Polymer Chemistry
Materials Science
Nanotechnology

Background:

Polymer microcapsules are essential for various applications, including coatings and drug delivery.
Controlling microcapsule shell structure is key to tailoring their performance.
UV-curable prepolymers offer a versatile platform for microcapsule fabrication.

Purpose of the Study:

To synthesize polymer microcapsules using UV-curable prepolymers.
To investigate the impact of shell chemistry and functionality on microcapsule properties.
To establish structure-property relationships for controlled microcapsule design.

Main Methods:

Emulsion templating combined with photopolymerization.
Utilized various UV-curable prepolymers: polyurethane acrylates, polyester acrylates, and epoxy acrylates.
Varied prepolymer functionality (di-, tetra-, hex-) to control cross-linking density.

Main Results:

Microcapsule properties are effectively regulated by shell composition and cross-linking density.
Epoxy acrylate-based microcapsules demonstrated superior impermeability, solvent resistance, and mechanical properties.
Higher prepolymer functionality led to improved impermeability, solvent resistance, and barrier properties.
Microcapsule dispersion in coating matrices follows a 'like dissolves like' principle for optimal compatibility.

Conclusions:

Shell structure modulation via UV-curable prepolymers allows for precise control over microcapsule properties.
Epoxy acrylate-based microcapsules and those with higher functionality offer enhanced performance.
Understanding structure-property relationships guides the rational design of advanced microcapsules for specific applications.