One-Pot Template-Free Synthesis of Monodisperse Hollow Hydrogel Microspheres and their Resulting Properties
- Title
- One-Pot Template-Free Synthesis of Monodisperse Hollow Hydrogel Microspheres and their Resulting Properties
- Author
- 서경도
- Keywords
- hollow structure; pH-responsive hydrogels; release behavior; shell thickness
- Issue Date
- 2013-08
- Publisher
- John Wiley & Sons, Ltd
- Citation
- Macromolecular Rapid Communications, Aug 2013, 34(15), P.1243-1248
- Abstract
- Monodisperse poly(methacrylic acid/ethyleneglycoldimethacrylate) (MAA/EGDMA) hollow microcapsules, which exhibit pH-responsive behavior, are prepared by diffusion of cationic surfactants and hydrophobic interaction. During the association of the negatively charged hydrogel microspheres and an oppositely charged surfactant (cetyltrimethylammonium bromide, CTA(+)B), the hydrophobic polymer-surfactant complexes that form are separated from the internal water; consequently, a hollow structure can be formed. Confocal laser scanning microscopy, UV spectroscopy and zeta potential are employed to study the formation of the hollow structure during the diffusion of the cationic surfactant. The controlled release behavior of methylene blue as a model drug from the as-prepared poly(MAA/EGDMA) microcapsules with a hollow structure is investigated under different pH conditions. The hollow structure can be retained, even during repetitive pH changes.
- URI
- http://onlinelibrary.wiley.com/doi/10.1002/marc.201300330/abstracthttp://hdl.handle.net/20.500.11754/45235
- ISSN
- 1022-1336; 1521-3927
- DOI
- 10.1002/marc.201300330
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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