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Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning

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Hydrogel particles as a particulate stabilizer for dispersion polymerization.

Daisuke Suzuki¹, Shohei Yamakawa

¹International Young Researchers Empowerment Center, Shinshu University, 3-15-1, Tokida Ueda 386-8567 Japan. d_suzuki@shinshu-u.ac.jp

Langmuir : the ACS Journal of Surfaces and Colloids

|July 12, 2012

Summary

This study introduces poly(N-isopropylacrylamide) hydrogel particles as novel steric stabilizers for styrene dispersion polymerization. The research confirms their effectiveness in stabilizing polystyrene particle formation.

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Microwave-assisted Functionalization of Poly(ethylene glycol) and On-resin Peptides for Use in Chain Polymerizations and Hydrogel Formation

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Published on: October 29, 2013

Area of Science:

Polymer Science
Materials Chemistry
Colloid Science

Background:

Dispersion polymerization typically utilizes soluble polymers or inorganic nanoparticles as steric stabilizers.
The development of novel particulate steric stabilizers is crucial for advancing polymerization techniques.

Purpose of the Study:

To investigate the use of poly(N-isopropylacrylamide) hydrogel particles as particulate steric stabilizers in styrene dispersion polymerization for the first time.
To evaluate the influence of hydrogel particle size and concentration on the characteristics of the resulting polystyrene particles.

Main Methods:

Dispersion polymerization of styrene using poly(N-isopropylacrylamide) hydrogel particles as stabilizers.
Characterization of resultant polystyrene particles, including assessment of hydrogel particle coverage.
Techniques employed include electron microscopy and X-ray photoelectron spectroscopy.

Main Results:

Poly(N-isopropylacrylamide) hydrogel particles effectively function as steric stabilizers in styrene dispersion polymerization.
The size and concentration of hydrogel particles significantly impact the properties of the synthesized polystyrene particles.
Observation of hydrogel particle coverage on a portion of the resultant polystyrene particles, verified by advanced analytical methods.

Conclusions:

Hydrogel particles represent a viable and effective class of particulate steric stabilizers for dispersion polymerization.
This novel approach offers new possibilities for controlling polymer particle morphology and surface properties.
The findings open avenues for designing advanced polymer composites and functional materials.