期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 325, 期 1, 页码 141-148出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2008.05.033
关键词
block copolymer; self-assembly; polymeric micelles; micelle crosslinking; nanogel
资金
- European Commission [MTKD-CT-2004-509841]
- Silesian Regional Fund
Double hydrophilic block copolymers poly(ethylene oxide)-b-polyglycidol were synthesized using living anionic polymerization. The polyglycidol blocks were made hydrophobic by the esterification of a part of hydroxyl groups with cinnamic acid, thus simultaneously attaching UV-sensitive double bonds to the polymer backbone. The block copolymers were found to spontaneously associate in aqueous solution forming well-defined micelles, where the corona of the micelles was formed of EO units and the cores consisted of hydrophobic glycidyl cinnanamate units. The critical micelle concentration was determined by light-scattering measurements and fluorescence spectroscopy. Stabilization of micelles was obtained by covalently crosslinking the cores of polyether micelles formed from amphiphilic block copolymers of the type poly(ethylene oxide)-b-poly(glycidol-co-glycidyl cinnamate) (denoted EO113-b-(Gl(33)-co-GlCA(33-x))). To obtain stable nanoparticles double bonds of cinnamate units contained in core were crosslinked under UV irradiation. The kinetics of the stabilization process was investigated using SEC-MALLS and UV spectroscopy. The parameters of the micelles and nanogels were calculated from the light-scattering data. (C) 2008 Elsevier Inc. All rights reserved.
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