fig4

Microstructure engineering of core-shell flame retardants: SiO<sub>2</sub> and MXene encapsulated ammonium polyphosphate for fire-safe thermoplastic polyurethane

Figure 4. High-resolution (A) Ti 2p, (B) Si 2p, (C) P 2p, (D) N 1s, (E) C 1s, and (F) O 1s XPS spectra for APP-3BL. APP: Ammonium polyphosphate; XPS: X-ray photoelectron spectroscopy.

Microstructures
ISSN 2770-2995 (Online)

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