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ATR-FTIR spectra of (A) maghemite (nonspray-dried iron oxide NPs) and hematite (spray-dried iron oxide NPs), (B) PCL and CIP, (C) PCL–CIP–maghemite microspheres, and (D) PCL–CIP–hematite microspheres.
Abbreviations: ATR–FTIR, attenuated total reflectance–Fourier transform infrared; NPs, nanoparticles; PCL, polycaprolactone; CIP, ciprofloxacin.
