The FTIR spectra of pure drug (TZP), Poloxamer-188 (P188), mannitol, physical mixture of TZP, P188, and mannitol (PM) and freeze-dried NC1 using a BRUKER Optik GmBH (Model ALPHA, Ettlingen, Germany) attached with the software OPUS Version-7.8. The analytes were triturated Potassium bromide (KBr) in 1:100 (w/w) ratio using mortar and pestle; thereafter, the mixture was compressed to pellets by hydraulic press. The spectra of the pellets were obtained from 4000 to 500 cm−1 wavenumber using 2 cm−1 resolutions.
Model alpha
Manufactured by Bruker
Sourced in Germany
The Bruker Model Alpha is a versatile laboratory instrument designed for various analytical applications. It provides accurate measurements and data analysis capabilities. The core function of the Model Alpha is to perform high-quality analysis and characterization of samples.
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Lab products found in correlation
9 protocols using model alpha
1
FTIR Spectroscopic Analysis of Pharmaceutical Formulation
2
FTIR Analysis of Sample Functional Groups
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Fourier Transformed Infrared Spectroscopy (FTIR) spectra of the samples were recorded using a FTIR Spectrometer (Bruker Optics, MA, USA, Model Alpha) in transmission mode with the wavenumber ranging from 4000 to 500 cm−1 for sample functional groups characterization.
3
FTIR Spectroscopic Analysis of TNX-NLCs
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The FTIR spectra of TNX-NLCs were recorded using FTIR spectroscopy (Bruker, model alpha,
Germany). Samples were mixed with potassium bromide (spectroscopic grade) and compressed
into disks using hydraulic press before scanning from 4000 to 600 cm−1 was
carried out according to El-Feky et al. (2020 (link)).
Germany). Samples were mixed with potassium bromide (spectroscopic grade) and compressed
into disks using hydraulic press before scanning from 4000 to 600 cm−1 was
carried out according to El-Feky et al. (2020 (link)).
4
Spectroscopic Analysis of Hydrogel Composition
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The pristine ICA and CTS, as well as the gelated ICA/CTS hydrogel, were analyzed using an ATR–FTIR (model-Alpha, Bruker, Germany) spectrometer with a scanning range from 1000 to 4,000 cm−1 at ambient temperature.
5
FTIR Analysis of Coral Skeletal Material
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Fourier transform infrared spectroscopy (FTIR) analyses were directly performed on finely powdered C. compactum skeletal material. Powdered samples of skeletons and KBr (potassium bromide) were mixed (about 5% powdered samples in KBr) and loaded into the sample holder. A background spectrum was measured for KBr.
SOM (soluble organic matrix) and IOM (insoluble organic matrix) have different properties and were therefore prepared differently for analysis by ATR-FTIR to understand the details of structural and functional properties of the skeletal material. Both SOM and IOM were subjected to attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR) using a FTIR spectrometer (Model Alpha, Bruker) equipped with a diamond ATR crystal cell (45° ZnSe; 80 mm long, 10 mm wide and 4 mm thick). For spectral analysis, the SOM and IOM lyophilized samples were placed onto the crystal cell and the cell was clamped into the mount of the FTIR spectrometer. Spectra in the range of 400–4000 cm−1 with automatic signal gain were collected in 32 scans at a resolution of 4 cm−1 and were rationed against a background spectrum recorded from the clean empty cell.
SOM (soluble organic matrix) and IOM (insoluble organic matrix) have different properties and were therefore prepared differently for analysis by ATR-FTIR to understand the details of structural and functional properties of the skeletal material. Both SOM and IOM were subjected to attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR) using a FTIR spectrometer (Model Alpha, Bruker) equipped with a diamond ATR crystal cell (45° ZnSe; 80 mm long, 10 mm wide and 4 mm thick). For spectral analysis, the SOM and IOM lyophilized samples were placed onto the crystal cell and the cell was clamped into the mount of the FTIR spectrometer. Spectra in the range of 400–4000 cm−1 with automatic signal gain were collected in 32 scans at a resolution of 4 cm−1 and were rationed against a background spectrum recorded from the clean empty cell.
6
Characterization of Composite Materials
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The formation of Ag, Mg, GT/PCL, GT/PCL-Ag, GT/PCL-Mg, and GT/PCL-Ag-Mg were analyzed with Fourier transform infrared (FTIR) spectroscopy using ATR–FTIR (model-Alpha, Bruker, Germany) spectrometer, scanning from 250 to 4,000 cm–1 at room temperature.
7
ATR-FTIR Analysis of Bio-Coke Samples
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ATR-FTIR (Bruker Corporation, model alpha with diamond crystal ATR material) was used to perform spectral analysis. The spectrometer was connected directly to OPUS software, which allows for real-time pressure adjustment at the solid surface. The preserved bio-coke samples were subjected to analysis without further changes. The spectra were corrected from the center bottom surface of the sample, 3 times/sample, 27 times in total. The detector resolution was set at 8 cm -1 in order to reduce the signal to noise ratio, with 512 background scans and 256 sample scans. The spectra range was from 4000 to 800 cm -1 . In the case of JC powder, containing 10 wt.% moisture, the spectra were obtained 27 times. In order to eliminate divergence of CO2 and corrected differences of absorption intensity in the samples, each group of spectra was then split into 2 ranges, 3600 to 2700 cm -1 and 1800 to 800 cm -1 , and normalized within each range under the area.
8
High-Temperature FTIR Spectroscopy of Alcohols
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Fourier-transform infrared (FTIR) transmittance spectra were recorded in the 600–4000 cm−1 frequency region using a spectrometer (Bruker, Alpha model) with a resolution of 1 cm−1. Sixteen scans were averaged to obtain spectra with adequate signal-to-noise ratios. Temperature-dependent measurements were taken using a homemade high-temperature optical cell equipped with ZnSe windows and variable thicknesses adjusted using Teflon spacers in the range of 0.1–2 mm. Thickness depended only on the alcohol concentration to avoid the effect of total absorbance. Infrared absorption spectra were measured in the 17–67 °C temperature range, with an accuracy of ±0.5 °C, to avoid boiling the solutions. All measurements were taken immediately after the preparation of the samples to avoid evaporation. A detailed description of the experimental protocols followed to acquire high-temperature spectroscopic measurements in the liquid state has been reported elsewhere [32 (link),33 (link)].
9
Comprehensive Material Characterization
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Thermogravimetric
analysis (TG) was carried out with a SDT Q600 thermogravimetic analyzer.
Scanning electron microscopy (SEM) images and energy dispersive spectroscopy
(EDS) were conducted with QUANTA 200 at the accelerating voltage of
20 kV. XRD patterns are acquired with X-ray diffractometry (XRD-Bruker;
D8 Advance) coupled with Cu Kα radiation. Textural properties
were obtained and analyzed with N2 isothermal adsorption
and desorption on an Autosorb1-MP Quantachrome. Fourier transform
infrared spectroscopy was performed with a Bruker equipment, Alpha
model.
analysis (TG) was carried out with a SDT Q600 thermogravimetic analyzer.
Scanning electron microscopy (SEM) images and energy dispersive spectroscopy
(EDS) were conducted with QUANTA 200 at the accelerating voltage of
20 kV. XRD patterns are acquired with X-ray diffractometry (XRD-Bruker;
D8 Advance) coupled with Cu Kα radiation. Textural properties
were obtained and analyzed with N2 isothermal adsorption
and desorption on an Autosorb1-MP Quantachrome. Fourier transform
infrared spectroscopy was performed with a Bruker equipment, Alpha
model.
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