FTIR(S) – Fourier Transform Infrared Spectroscopy
tl;dr – Fourier Transform Infrared Spectroscopy (FTIR Analysis or FTIR Spectroscopy) is an analytical technique used to identify organic, polymeric, and in some cases, inorganic materials. The FTIR analysis method uses infrared light to scan test samples and observe chemical properties.
NIR(S) – Near Infrared Spectroscopy
nm – Nanometer
In the International System of Units, the prefix “nano” means one-billionth, or 10^-9 ; therefore one nanometer is one-billionth of a meter.
PPS – Polyphenylene sulfide
PI – Polyimide
PEI – Polyethylenimine
PP – Polypropylene