Polymer Tubes with Longitudinal Composition Gradient by Face-to-Face Wetting
Chemistry of Materials2007Vol. 20(3), pp. 1076–1081
Citations Over TimeTop 21% of 2007 papers
O. Kriha, Petra Göring, Marc Milbradt, Seema Agarwal, Martin Steinhart, Ralf B. Wehrspohn, Joachim H. Wendorff, Andreas Greiner
Abstract
Nanoporous and macroporous templates were simultaneously infiltrated from both of their opposite surfaces using model polymers labeled with fluorescent probes or bearing probe molecules detectable by energy-dispersive X-ray spectroscopy by precursor wetting. Face-to-face wetting with polymeric solutions resulted in partial mixing of both components, leading to tubular nanostructures characterized by a longitudinal composition gradient. Mixing of the components infiltrated from the opposite surfaces could be prevented by face-to-face wetting with polymeric melts, leading to the formation of tubular components predominantly consisting of the pure components that were separated by sharp interfaces.
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