Quantitative Analysis of Epoxy Mixing Ratios Using Partial Least-squares Analysys of Ftir Spectra
نویسنده
چکیده
ATR-FTIR (Attenuated Total Reflectance Fourier Transform Infrared) spectra of prehardened epoxies with varying amounts of hardener and resin (mix ratio) have been acquired on a Midac FTIR spectrometer. The spectra form a set of training spectra for partial least-squares (PLS) analysis which was then used to analyze a series of epoxies of unknown mix ratio. The PLS model predicted the unknown mix ratios for seven samples to an average of 0.1 part of hardener out of 11 parts (<1%).
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