The thermal stabilities of the samples were determined by thermogravimetric analysis (TGA) using a TG 209 F1 Libra® apparatus (Netzsch, Selb, Germany). All samples were dried in an oven at 60 °C for 12 h prior to analysis. About 5 mg of each sample was put in an alumina crucible without a lid, and then measurements were performed under a nitrogen atmosphere with a gas flow rate of 20 mL min−1. The heating range was from room temperature to 600 °C, and the heating rate was 10 °C·min−1.
Tg 209 f1 libra apparatus
Manufactured by Netzsch
Sourced in Germany
The TG 209 F1 Libra apparatus is a thermogravimetric analyzer (TGA) designed for the thermal analysis of materials. It is used to measure the change in the mass of a sample as a function of temperature or time in a controlled atmosphere.
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3 protocols using tg 209 f1 libra apparatus
1
Thermal Stability Analysis of Samples
2
Thermal Analysis of Hydrogel Materials
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Thermogravimetric analysis was conducted using a Netzsch TG 209 F1 Libra apparatus. The measuring temperature ranged from 30 °C to 900 °C at a heating rate of 10 °C∙min−1 under a nitrogen atmosphere. The measurements were performed on samples with a mass of 10 ± 0.1 mg placed in Al2O3 crucibles. Moreover, differential scanning calorimetry (DSC) was applied to evaluate the thermal properties of the hydrogel materials. The measurement was performed using a Netzsch DSC 204 F1 Phoenix apparatus. Hydrogel samples with a mass of 10 ± 0.1 mg, placed in aluminum crucibles sealed with lids, were heated from −30 °C to 300 °C, at a rate of 10 °C∙min−1 in a nitrogen atmosphere.
3
Comprehensive Characterization of Microcrystalline Samples
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Powder X-ray diffraction data were collected on a Bruker D8 Advance Eco diffractometer equipped with a Cu Kα radiation source (λ = 1.541874 Å), in the Debye-Scherrer geometry. The microcrystalline samples were sealed in glass capillaries and measured in the 5-50°2θ range at room temperature. The reference powder patterns from SC-XRD measurements were generated using Mercury CSD 4.3.1 software. 29 Elemental analyses of CHN were performed on an ELEMENTAR Vario Micro Cube CHNS analyser. IR spectra were collected on a Bruker Alpha II spectrometer with a diamond ATR add-on. The thermogravimetric data were collected using a Netzsch TG 209 F1 Libra apparatus. The water sorption/desorption processes were characterized by the dynamic vapor sorption method using the SMS DVS Resolution apparatus. The isotherm was measured in a 0-90% relative humidity range at a temperature of 25 °C. Every measurement step was performed until a stable Dalton Transactions Paper mass was achieved. Magnetic susceptibility measurements were on a Quantum Design MPMS-3 Evercool magnetometer in magnetic fields up to 70 kOe. The experimental data were corrected for diamagnetism of the sample and the sample holder. The magnetic data were fitted using the PHI programme. 31
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