Figure 10. Micro-Raman Analysis of Post-Combustion Carbon Structures. Comparative spectra for pristine TPU and its composite counterparts: (A) Pure TPU, (B) TPU/APP, (C) TPU/APP-1BL, (D) TPU/APP-2BL, (E) TPU/APP-3BL. TPU: Thermoplastic polyurethane; APP: ammonium polyphosphate.
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