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Soft X-ray spectromicroscopy of phase-change microcapsules |
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| Authors: | Tzvetkov G Graf B Wiegner R Raabe J Quitmann C Fink R |
| Affiliation: | aPhysikalische Chemie II, Friedrich-Alexander Universität Erlangen-Nürnberg, Egerlandstrasse 3, D-91058 Erlangen, Germany bSwiss Light Source, Paul Scherrer Institut, 5232 Villigen, PSI, Switzerland cICMM, Friedrich-Alexander Universität Erlangen-Nürnberg, Henkestrasse 43, D-91058 Erlangen, Germany |
| 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. |
| Keywords: | Spectromicroscopy Scanning transmission X-ray microscope (STXM) NEXAFS PCM |
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