FT-IR spectroscopy
All experiments were performed using a Nicolet iS10 FT-IR spectrometer (ThermoFisher Scientific) using the Smart iTX ATR attachment with the following settings: 64 scans, resolution 8, data spacing 0.964 cm-1, range 4000-600 cm-1. Spectra were collected every 20 minutes over a 12-hour period. A background spectrum was collected prior to application of the oil/drier mixture.