Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 30, Issue 18, Pages 1583-1588Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200900222
Keywords
dynamic light scattering; emulsion polymerization; nanoparticles; nanocomposites; particle size distribution
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Funding
- Ministry of Education, Science, and Technology (MEST) [R31-20008-000-10026-0]
- World Class University (WCU) Program
- National Research Foundation of Korea [082-4-3-0367] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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An isopropyl myristate (IPM) biocompatible oil and an IPM solution of dodecanethiol-capped Ag nanoparticles (NPs, 4.5 nm) were used as hydrophobes to suppress the Ostwald ripening of monomer/hydrophobe miniemulsified droplets in a surfactant-stabilized water phase. The formation of non-IPM-encapsulated nanospheres (48 nm) and IPM-encapsulated nanocapsules (90 nm) were precisely controlled by using a water-soluble and an oil-soluble initiator, respectively, in the presence of a pure IPM as a hydrophobe in miniemulsion polymerization. Well-defined PS nanospheres, on which surfaces were coated with Ag NPs (Ag/PS nanospheres, 65 nm), and nanocapsules encapsulating both NPs and IPM liquid phase (Ag-IPM/PS nanocapsules, 115 nm) were made by replacing the hydrophobe from pure IPM with Ag/IPM solution. These nanostructures were characterized by transmission and scanning electron microscopes.
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