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Encapsulation of Organic Pigment Particles Via Miniemulsion Polymerization

✍ Scribed by Nico Steiert; Katharina Landfester

Book ID
102485492
Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
395 KB
Volume
292
Category
Article
ISSN
1438-7492

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✦ Synopsis

Abstract

Different organic yellow, magenta, and blue pigment nanoparticles can be efficiently encapsulated by cosonicating pigment dispersions and monomer miniemulsions in the pigment to monomer weight ratio of 80:20, followed by polymerization. As polymers polystyrene, different polyacrylates or copolymers could be used. Efficient encapsulation was proven by means of ultracentrifugation, electron microscopic methods, and streaming potential titration. Comparing the reaction kinetics of a typical styrene miniemulsion polymerization with the corresponding β€œad‐miniemulsion polymerizations” proceeding on the surface of pigment particles, an influence of the pigments' molecular structure was observed.

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Encapsulation of an organic phthalocyani
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## Abstract Aqueous dispersions of polystyrene latexes encapsulating a copper phthalocyanine blue pigment were formulated using the miniemulsion polymerization technique. The organic pigment was first suspended into the monomer phase, and the resulting oily suspension was subsequently converted int