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.