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Soft X-ray spectromicroscopy of phase-change microcapsules
G Tzvetkov1, B Graf, R Wiegner
1Physikalische Chemie II, Friedrich-Alexander Universität Erlangen-Nürnberg, Egerlandstrasse 3, D-91058 Erlangen, Germany. george.tzvetkov@chemie.uni-erlangen.de
Abstract:
A synchrotron-based scanning transmission X-ray microscope (STXM) is used to investigate Micronal phase-change microcapsules. Prolonged X-ray illumination of the specimen leads to the breaking of the microcapsules' protective polymer shell and a partial separation of the core-shell species occurs. The paraffin wax and acrylic polymer components are characterized by carbon K-edge near X-ray edge absorption fine structure (NEXAFS) spectroscopy and components distribution mapping of the beam-damaged specimen is performed.
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