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Encapsulation of Organic Pigment Particles Via Miniemulsion Polymerization
Author(s) -
Steiert Nico,
Landfester Katharina
Publication year - 2007
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200700138
Subject(s) - miniemulsion , materials science , polymerization , monomer , polystyrene , polymer , styrene , copolymer , chemical engineering , polymer chemistry , emulsion polymerization , composite material , engineering
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 “ad‐miniemulsion polymerizations” proceeding on the surface of pigment particles, an influence of the pigments' molecular structure was observed.