The thermal stability of the crosslinked epoxy resins were thermogravimetrically analyzed using a STA 449 F1 Jupiter apparatus (Netzsch, Selb, Germany) coupled to a Vertex 70 spectrophotometer for FT-IR analysis and Aeölos QMS 403C mass spectrometer (Netzsch-Germany) for the mass spectroscopic analysis of the evolved gases. Samples of about 10 mg placed in Al2O3 crucibles were thermally degraded at a heating rate of 10 °C min−1, under air atmosphere in the temperature range between 25 °C and 700 °C.
Sta 449 f1 jupiter apparatus
Manufactured by Netzsch
Sourced in Germany
The STA 449 F1 Jupiter apparatus is a thermal analysis instrument designed for simultaneous thermogravimetry (TG) and differential scanning calorimetry (DSC) measurements. The core function of this equipment is to provide quantitative information about physical and chemical changes in materials as a function of temperature and time under controlled atmospheric conditions.
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Lab products found in correlation
5 protocols using sta 449 f1 jupiter apparatus
1
Thermal Stability Analysis of Crosslinked Epoxy Resins
2
Characterization of Metal Complexes
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All reagents and solvents were received from Sigma-Aldrich or Acros and used as received without further purification, except for pomiferin, which was obtained as a generous gift from Assoc. prof. Milan Žemlička from University of Veterinary and Pharmaceutical Sciences Brno, Faculty of Pharmacy, Brno, Czech Republic. The CHN elemental analysis was performed using a CHN analyzer Flash Smart (Thermo Scientific) (Waltham, MA, USA). Infrared (IR) spectra were measured on an iS5 FT–IR spectrometer (Thermo Nicolet) (Waltham, MA, USA) using an ATR technique in the range of 400–4000 cm−1. Mass spectra (MS) were obtained on a Bruker amaZon mass spectrometer using ESI+ technique (Bruker amaZon SL, Bruker (Bremen, Germany)). Conductivity experiments were conducted using a Cond340i/FET apparatus (WTW, Weilheim, Germany) with 1.0 × 10−3 M solutions of complexes in N,N-dimethylformamide (DMF), acetonitrile (MeCN) and methanol (MeOH) using the Cond340i/FET conductometer (WTW). TG/DSC thermogravimetric analyses of the representative complexes 4 and 5 were carried out on an STA 449 F1 Jupiter® apparatus (Netzsch, Selb, Germany) in the temperature range of 20–700 °C.
3
Thermal Stability Analysis of Lyophilized Gels
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The thermal stability of the prepared lyophilized gels was evaluated by thermogravimetric analysis on a STA 449 F1 Jupiter apparatus (Netzsch, Selb, Germany). The samples, with weights ranging from 8 to 10 mg, were placed in an open Al2O3 crucible and thermally degraded. The temperature range was 30–670 °C in an N2 (99.99% purity) atmosphere. Runs were performed in a dynamic mode, with a heating rate of 10 °C/min under a gas flow of 40 mL/min. The thermogravimetric balance was calibrated on temperature and sensitivity with standard metals (In, Sn, Bi, Zn and Al) from 25 to 700 °C. Data collection was performed with Proteus® software.
4
Thermal Stability of Lyophilized Gels
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The thermal stability of the lyophilized gels was evaluated by thermogravimetric analysis on a STA 449 F1 Jupiter apparatus (Netzsch-Germany). The samples, with weights from 8 to 10 mg, were placed in an open Al2O3 crucible and thermally degraded. The temperature range was 30–670 °C in N2 (99.99% purity) atmosphere. Runs were performed in a dynamic mode, with a heating rate of 10 °C/min under a gas flow of 40 mL/min. The thermogravimetric balance was calibrated on temperature and sensitivity with standard metals (In, Sn, Bi, Zn and Al) from 25 to 700 °C. Data collection was performed with Proteus® software
5
Thermogravimetric Analysis of Samples
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Thermogravimetric behavior of the samples was studied in dynamic conditions using a STA 449 F1 Jupiter apparatus (Netzsch, Germany) in a nitrogen atmosphere with a 10 °C min−1 heating rate, in the temperature range of 30–650 °C. Samples of 10–15 mg were placed in Al2O3 crucibles, and Al2O3 was used as reference material. The gases appearing by the thermal degradation of the samples were analyzed using an online connected spectrophotometer FT–IR (Vertex 70) equipped with an external module TGA–IR and Aëolos QMS 403C mass spectrometer. The acquisition of FT–IR spectra in 3D was executed with OPUS 6.5 software, with spectra recorded at 600–4000 cm−1 intervals, at a resolution of 4 cm−1. The QMS 403C spectrometer worked at 10–5 mbar vacuum and electron impact ionization energy of 70 eV. The data acquisition was achieved in the range m/z = 1–200 with a measurement time of 0.5 s for one channel, resulting in a time/cycle of 100 s.
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