Aqueous-Core Capsules via Interfacial Free Radical Alternating Copolymerization
2006; American Chemical Society; Volume: 39; Issue: 17 Linguagem: Inglês
10.1021/ma060951i
ISSN1520-5835
AutoresDan Wu, Carl D. Scott, Chia‐Chi Ho, Carlos C. Co,
Tópico(s)Polymer Surface Interaction Studies
ResumoAqueous-core capsules with uniform polymeric shells and diameters ranging from 0.2 to 5 μm were prepared by polymerizing the interfaces of inverse emulsion microspheres. Free-radical polymerization was constrained to the interface of water-in-oil microspheres by the alternating copolymerization of hydrophobic maleate esters and hydrophilic polyhydroxy vinyl ethers, in a manner analogous to classical interfacial polycondensations. In these polymerizations, the kinetics, shell thickness, and release characteristics of the resulting aqueous-core capsules are set by the diffusion-limited alternating reaction of the oil-soluble maleate esters and water-soluble vinyl ethers.
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