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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

Temperature-Responsive Aqueous Two-Phase System Based on Cationic Polyelectrolytes for Polymer Microspheres

Jiancong Yuan¹, Yongjie Yuan¹, Hailiang Zhang¹

¹Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Organic Functional Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105 China.

ACS Applied Materials & Interfaces

|June 24, 2026

Summary

This summary is machine-generated.

Researchers developed a novel, eco-friendly method for creating polymer microspheres using temperature-responsive aqueous two-phase systems (ATPS). This approach enables responsive formation and in situ solidification, overcoming limitations of traditional organic solvent methods.

Keywords:

aqueous two-phase system polyelectrolytes polymer microspheres self-crosslinking temperature responsiveness tetracycline

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Area of Science:

Polymer Chemistry
Materials Science
Environmental Science

Background:

Traditional polymer microsphere synthesis uses organic solvents, posing environmental risks and separation difficulties.
Aqueous two-phase systems (ATPS) offer a sustainable alternative but face challenges in droplet formation and solidification.

Purpose of the Study:

To develop a temperature-responsive and self-curable ATPS for synthesizing polymer microspheres.
To investigate the formation mechanism and control over microsphere properties.
To evaluate the adsorption performance of the synthesized microspheres for tetracycline removal.

Main Methods:

Utilized liquid-liquid phase separation (LLPS) of poly(1-cyanomethyl-3-vinylimidazolium bromide) (PILCN) and poly(diallyldimethylammonium chloride) (PDDA) at low temperatures.
Triggered in situ self-crosslinking of PILCN upon heating and mild alkaline conditions for microsphere solidification.
Characterized microsphere properties (size, morphology) by adjusting pH, temperature, and concentration.

Main Results:

Successfully formed solid PILCN microspheres via a temperature-responsive and self-curable ATPS.
Demonstrated effective control over microsphere size and morphology by tuning process parameters.
Achieved a high tetracycline adsorption capacity of 826.5 mg/g, following Langmuir and pseudo-second-order models, indicating chemisorption.

Conclusions:

The developed ATPS provides a sustainable and tunable method for polymer microsphere synthesis.
PILCN microspheres show significant potential for efficient tetracycline adsorption through multiple interaction mechanisms.