Abstract
A new analytical method referred to as “Derivatization-Electron Probe X-Ray Microanalysis (XMA)” has been developed to determine the distribution of 0.1% order functional groups in polymers with micron level lateral resolution. Depth profiles of the functional groups in the polyethylene (PE) degraded by the outdoor-exposure were determined using this method. The results suggested that the PE degrades from the surface and the backface due to the oxidation during the outdoor-exposure, and the rain extracts the oxidation products generated near the surface. Also, it was confirmed that the load by water was indispensable for the accelerated weathering test. The sensitivity of the derivatization-XMA was approximately 2–6 times higher than that of micro-IR. Through this research, the utility of the derivatization-XMA method for studying the degradation mechanism and characterizing polymers was confirmed.
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Sugiura, M., Mitsuoka, T. & Murase, A. Depth Profiling Analysis of Functional Groups in Outdoor-Exposed Polyethylene Using Derivatization-Electron Probe X-Ray Microanalysis. Polym J 33, 617–620 (2001). https://doi.org/10.1295/polymj.33.617
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DOI: https://doi.org/10.1295/polymj.33.617