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Flash NanoPrecipitation for the Encapsulation of Hydrophobic and Hydrophilic Compounds in Polymeric Nanoparticles

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Published on: January 7, 2019

Crosslinked poly(ionic liquid) nanoparticles: inner structure, size, and morphology.

Michael Koebe¹, Markus Drechsler, Jens Weber

¹Max Planck Institute of Colloids and Interfaces, Department of Colloid Chemistry, D-14424 Potsdam, Germany.

Macromolecular Rapid Communications

|February 14, 2012

Summary

This summary is machine-generated.

Highly ordered inner structures of crosslinked poly(ionic liquid) nanoparticles were revealed. Their multilamellar vesicle morphology and size depend on polymerization conditions, offering tunable nanoparticle properties.

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Nanosponge Tunability in Size and Crosslinking Density

Nanosponge Tunability in Size and Crosslinking Density

Published on: August 4, 2017

Area of Science:

Polymer Science
Materials Science
Nanotechnology

Background:

Poly(ionic liquid)s are advanced polymers with unique properties.
Nanoparticles offer versatile applications in various fields.
Understanding nanoparticle structure is crucial for property control.

Purpose of the Study:

To investigate the inner structure of crosslinked poly(ionic liquid) nanoparticles.
To determine the factors influencing nanoparticle size and morphology.
To explore the relationship between structure and polymerization conditions.

Main Methods:

Cryogenic transmission electron microscopy (cryo-TEM) for high-resolution imaging.
Controlled polymerization to synthesize poly(ionic liquid) nanoparticles.
Systematic variation of polymerization parameters (monomer/crosslinker concentration, anion type, salt addition).

Main Results:

Crosslinked poly(ionic liquid) nanoparticles exhibit highly ordered, centric multilamellar vesicle structures.
Nanoparticle geometry is dependent on the length of quaternizing alkyl chains.
Nanoparticle size is sensitive to monomer/crosslinker concentrations, anion type, and salt concentration.
Size expansion can be isotropic or anisotropic, leading to linear attachment under specific conditions.
Polymerization temperature and initiator amount showed minimal impact on nanoparticle size.

Conclusions:

The study reveals a tunable, ordered internal structure in crosslinked poly(ionic liquid) nanoparticles.
Polymerization conditions offer precise control over nanoparticle size and morphology.
These findings enable the design of tailored poly(ionic liquid) nanoparticles for specific applications.