2.5.5. Fourier-Transform Infrared Spectroscopy (FT-IR)

The presence of EFV in the nanoemulsions was also investigated using FT-IR and infrared absorption spectra were recorded using attenuated total reflection with a PerkinElmer spectrum 100 FT-IR spectrometer (PerkinElmer® Pty, Ltd., Beaconsfield, UK) at 64 scans per minute over the frequency range 4000–650 cm−<sup>1</sup> . Nanoemulsion samples were mounted onto a diamond crystal using an applied force of approximately 100 N. The spectral data were processed using software FT-IR spectrum version 10.5.4 software (PerkinElmer®, Inc. Pty, Ltd., Beaconsfield, UK).
