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  • Title: Soft X-ray spectromicroscopy of phase-change microcapsules.
    Author: Tzvetkov G, Graf B, Wiegner R, Raabe J, Quitmann C, Fink R.
    Journal: Micron; 2008; 39(3):275-9. PubMed ID: 17509889.
    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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