65 ft ir spectrometer

Raman spectra were recorded on an InVia Renishaw spectrometer at 532 and 785 nm. Fourier transform-infrared (ATR FT-IR) measurements were collected on a Perkin Elmer 65 FT-IR spectrometer over the range 4000–500 cm⁻¹.

Raman
spectra were collected by using a Renishaw inVia micro-Raman spectrometer
with an excitation wavelength of 785 nm (500 mW). Point measurements
were collected with a 50× objective and a Leica microscope. Spectra
were acquired from 200–1800 cm^–1 with a 1200
L/mm diffraction grating and spectral resolution of ∼3 cm^–1. The laser power was set at 5% and each spectrum
is the sum of 10 accumulations and a 5 s exposure time. Samples were
placed in a glass slide cavity and sealed with a 1 mm thick quartz
top slide. Fourier transform infrared (ATR FT-IR) measurements were
performed on a PerkinElmer 65 FT-IR spectrometer over the range 4000–500
cm^–1.

FTIR was used to study the various interaction involved between linseed oil and OMMT. This analysis was performed using a Perkin Elmer 65-FTIR spectrometer (Haguenau, France) equipped with an ATR accessory with a ZnSe crystal. The IR spectra were collected in the 4000 to 400 cm⁻¹ range, with 16 scans and with a resolution of 2 cm⁻¹. Triplicate measurements from the same sample were carried out at room temperature (25 °C).