2.3.2. Fourier Transform Infrared Spectroscopy (FTIR)
Spectra to analyze bigel microstructure were obtained using a Cary 630 FTIR spectrometer with a diamond ATR attachment (Agilent Technologies, Santa Clara, CA). A piece of the bigel was scooped out of the container and placed directly onto the stage, ensuring complete coverage of the spectrometer lens. The instrument scanned from 650 – 4000 cm-1 with a resolution of 74 scans at 4 cm-1. Two replicates were obtained for each formulation as results were nearly identical between replicates.