Toward Controlling the Surface Morphology of Macroporous Copolymer Particles
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- 作者：Stanislav Dubinsky† ; ; Jai Il Park† ; ; Ilya Gourevich† ; ; Carol Chan† ; ; Martin Deetz‡ ; ; Eugenia Kumacheva*† ;
- 刊名：Macromolecules
- 出版年：2009
- 出版时间：March 24, 2009
- 年：2009
- 卷：42
- 期：6
- 页码：1990-1994
- 全文大小：224K
- 年卷期：v.42,no.6(March 24, 2009)
- ISSN：1520-5835
文摘
Syntheses of macroporous polymer particles under certain conditions produce microbeads with a smooth nonporous “skin” layer. This effect limits the applications of porous microbeads by preventing solute molecules to permeate the dense particle surface and reach particle’s porous interior. This paper reports a straightforward method thatwithout the adjustment of the composition of microbeadscan be used to suppress the formation of the “skin” on the surface of macroporous polymer particles. The approach presented as a solubility parameter−interfacial tension “map” paves the way to the selection of a broader range of porogen solvents and hence better rationalization of the composition of the monomer mixtures used in the synthesis of macroporous particles.