Thermogravimetric analysis (TGA) of the polysaccharide was conducted in a TA Q5000IR TGA apparatus using the 15 mg EPS fraction of the test material. The TGA curve plots the TGA signal (converted to the percent weight change on the Y-axis) against the reference material temperature (on the X-axis).
Q5000 ir tga
Manufactured by TA Instruments
Sourced in United States
The Q5000 IR TGA is a thermogravimetric analysis (TGA) instrument that utilizes infrared (IR) heating technology. It is designed to precisely measure the weight changes of a sample as a function of temperature and time under a controlled atmosphere.
Automatically generated - may contain errors
Lab products found in correlation
Agilent 1260 infinity, by Agilent Technologies (1 mentions)
Agilent 1200 series, by Agilent Technologies (1 mentions)
Vxr 500 spectrometer, by Agilent Technologies (1 mentions)
Vario micro cube elemental analyzer, by Elementar (1 mentions)
D8 advance, by Bruker (1 mentions)
Auriga field emission microscope, by Zeiss (1 mentions)
Lsm 710, by Zeiss (1 mentions)
S 4800, by Hitachi (1 mentions)
7 protocols using q5000 ir tga
1
Polysaccharide Thermogravimetric Analysis
2
Characterization of Polymer Molecular Weights
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1H
NMR spectra were obtained with a Varian VXR 500 spectrometer in the
School of Chemical Sciences NMR laboratory at the University of Illinois
at Urbana–Champaign. Absolute polymer molecular weights were
determined via gel permeation chromatography (GPC) (Table 1 ) with an analytical GPC (Agilent
1200 series) equipped with four Styragel columns (7.8 × 300 mm,
HR1, HR3, HR4, and HR5, Waters) coupled to a light scattering module
(Wyatt miniDAWN) and a differential refractive index detector (Agilent
1260 Infinity). For absolute molecular weight determination, dn/dc was taken as 0.1515 mL/mg, as previously
reported for absolute molecular weight determination from light scattering.51 (link) We independently confirmed the value of dn/dc using offline refractive index measurements
and found agreement within 2%. Thermal gravimetric analysis (TGA)
was performed using a TA Instruments Q5000 IR TGA using platinum pans
under nitrogen gas flow. Dynamic scans were taken at 10 °C/min
scans from 25 to 200 °C. Isothermal experiments were performed
at 85 °C.
NMR spectra were obtained with a Varian VXR 500 spectrometer in the
School of Chemical Sciences NMR laboratory at the University of Illinois
at Urbana–Champaign. Absolute polymer molecular weights were
determined via gel permeation chromatography (GPC) (
1200 series) equipped with four Styragel columns (7.8 × 300 mm,
HR1, HR3, HR4, and HR5, Waters) coupled to a light scattering module
(Wyatt miniDAWN) and a differential refractive index detector (Agilent
1260 Infinity). For absolute molecular weight determination, dn/dc was taken as 0.1515 mL/mg, as previously
reported for absolute molecular weight determination from light scattering.51 (link) We independently confirmed the value of dn/dc using offline refractive index measurements
and found agreement within 2%. Thermal gravimetric analysis (TGA)
was performed using a TA Instruments Q5000 IR TGA using platinum pans
under nitrogen gas flow. Dynamic scans were taken at 10 °C/min
scans from 25 to 200 °C. Isothermal experiments were performed
at 85 °C.
3
Thermogravimetric Analysis of Mixed Powders
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TGA was performed using TA instrument Q5000 IR TGA (TA Instruments, NewCastle, DE, USA) under N2 atmosphere. The samples were heated from 50 °C to 500 or 600 °C at a heating rate of 10 °C min−1. For mixed powders, the samples also were heated from 50 °C to 240 °C at a heating rate of 30 °C min−1 and kept for 20 min.
4
Characterization of Sewage Sludge Samples
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The sludge samples investigated
in this work include Severn Trent sewage cake (STC) (Severn Trent,
Minworth Water Treatment plant), Southern Water sewage cake (SWC)
(Southern Water, Millbrook plant), and Southern Water digestate (SWD)
(Southern Water, Millbrook plant). The Severn Trent and Southern Water
sewage cake samples were dried overnight at 35 °C under air in
an oven (Carbolite) and then crushed with an agate pestle and mortar.
The Southern Water digestate was dried in a 4.5 FreeZone freeze-dryer
(Labconco) for 48 h before oven drying at 35 °C and crushing.
The final moisture content of the dry solids was determined using
the NREL protocol for determining the solids content of biomass.34 The sludge (and the treated samples) were further
characterized using ultimate and proximate analysis carried out on
a Vario MICRO CUBE elemental analyzer (Elementar) and Q5000 IR TGA
(TA Instruments), respectively. Further details are in theSI .
in this work include Severn Trent sewage cake (STC) (Severn Trent,
Minworth Water Treatment plant), Southern Water sewage cake (SWC)
(Southern Water, Millbrook plant), and Southern Water digestate (SWD)
(Southern Water, Millbrook plant). The Severn Trent and Southern Water
sewage cake samples were dried overnight at 35 °C under air in
an oven (Carbolite) and then crushed with an agate pestle and mortar.
The Southern Water digestate was dried in a 4.5 FreeZone freeze-dryer
(Labconco) for 48 h before oven drying at 35 °C and crushing.
The final moisture content of the dry solids was determined using
the NREL protocol for determining the solids content of biomass.34 The sludge (and the treated samples) were further
characterized using ultimate and proximate analysis carried out on
a Vario MICRO CUBE elemental analyzer (Elementar) and Q5000 IR TGA
(TA Instruments), respectively. Further details are in the
5
Characterization of Synthetic Li2C4O4 Powders
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Synthetized Li2C4O4 powders were evaluated by powder XRD (Bruker D8 Advance) using a Bragg‐Brentano geometry between 10° and 90° at a step size of 0.02° s−1, Cu‐Kα radiation (λ = 0.154 nm) at 30 kV and 10 mA, and a divergence slit of 0.5 mm.
Surface morphologies of the synthetized Li2C4O4 powders and cathodes containing Li2C4O4 were investigated by SEM using a Carl Zeiss AURIGA field emission microscope with a Schottky field emitter as electron source and a typical accelerating voltage of 3 kV. The particle size distributions of the synthetized Li2C4O4 powders were analyzed by laser diffraction (CILAS 1064) using ethanol as solvent and few drops of dish soap as dispersant. Measurements were repeated three times to ensure a high reproducibility.
The thermal stability of Li2C4O4 cathode additive was investigated by thermogravimetric analysis (TGA) using a TGA Q5000‐IR (TA Instruments). Samples were loaded in an alumina crucible and measurements were performed under N2 flow at a heating rate of 10 K min−1 from room temperature to 600 °C.
Surface morphologies of the synthetized Li2C4O4 powders and cathodes containing Li2C4O4 were investigated by SEM using a Carl Zeiss AURIGA field emission microscope with a Schottky field emitter as electron source and a typical accelerating voltage of 3 kV. The particle size distributions of the synthetized Li2C4O4 powders were analyzed by laser diffraction (CILAS 1064) using ethanol as solvent and few drops of dish soap as dispersant. Measurements were repeated three times to ensure a high reproducibility.
The thermal stability of Li2C4O4 cathode additive was investigated by thermogravimetric analysis (TGA) using a TGA Q5000‐IR (TA Instruments). Samples were loaded in an alumina crucible and measurements were performed under N2 flow at a heating rate of 10 K min−1 from room temperature to 600 °C.
6
Comprehensive Characterization of ZnO-Loaded Polymer Membranes
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The surface morphology and EDS spectra of the membranes was studied by field emission scanning electron microscopy (FE-SEM, S-4800, Hitachi Ltd., Japan). The surface of the ZnOloaded filters was analyzed using an X-ray photoelectron spectrometer (XPS) (AXIS Ultra DLD, UK). The extent of cross-linking in the fibers was determined from fourier transform infrared (FT-IR) spectra (Nicolet 8700 FT-IR spectrometer). The thermal stability of the membranes was evaluated with a Thermal Gravimetric Analyzer (TGA Q5000-IR, TA Instruments). The mechanical properties were characterized by a Sans UTM6502 universal testing machine (Shenzhen, China). The leached quantity of the ZnO was analyzed by inductively coupled plasma atomic emission spectroscopy (ICP-MS, Perkin Elmer Nixon 300X). Fluorescence photographs of the composite membranes were taken using a Laser Scanning Confocal Microscope (Carl Zeiss, LSM710). The pore size distribution was conducted by surface area and porosity analyzer at 77 K (Quantachrome BET instrument, Quantachrome Corporation, USA).
7
Residual Moisture Content Analysis
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The RMC was determined by a thermogravimetric analyzer (TGA, Q5000IR, TA Instruments, New Castle, USA). The sample weight loss was monitored as the furnace temperature increased from room temperature (23°C) to 250°C at a program heating rate of 5°C/min. The weight of the evolved moisture was taken as the difference between the initial sample weight and the sample weight (at approximately 100°C) at the horizontal region of the thermogram indicative of the attainment of constant weight. The ratio of the weight of the lost residual moisture to the initial sample weight multiplied by one 100 yielded the percentage RMC of the sample.
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