Dsc q2000 differential scanning calorimeter

Manufactured by TA Instruments

Sourced in United States

The DSC Q2000 is a differential scanning calorimeter that measures the heat flow associated with material transitions as a function of temperature and time. It provides quantitative and qualitative data about physical and chemical changes that involve endothermic or exothermic processes, or changes in heat capacity.

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Lab products found in correlation

Tga q500, by TA Instruments (1 mentions) Discovery hr2 hybrid rheometer, by TA Instruments (1 mentions) Tga 850, by Mettler Toledo (1 mentions) Dma q800, by TA Instruments (1 mentions) Tga q500 apparatus, by TA Instruments (1 mentions) Ea3000 elemental analyzer, by Eurovector (1 mentions) Q50 thermogravimetric analyzer, by TA Instruments (1 mentions) Universal analysis 2000, by TA Instruments (1 mentions)

9 protocols using dsc q2000 differential scanning calorimeter

Thermal Stability and Glass Transition Analysis

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Thermogravimetric
analysis (TGA) was performed using a TA Instruments TGA Q500 apparatus
to determine the thermal stability of the polymers under an N₂ flux of 60 mL/min. Samples of 2–12 mg were kept isothermally
at 150 °C for up to 60 min to remove solvent residues. After
equilibration at 40 °C, the samples were analyzed up to 600 °C
at a heating rate of 10 °C/min. The thermal decomposition temperature
(T_d,95) was determined at a 5% weight
loss. Differential scanning calorimetry (DSC) analysis was carried
out using a TA Instruments DSC Q2000 differential scanning calorimeter.
Dried samples of 3–9.5 mg were transferred to aluminum pans,
which were hermetically sealed. In a preliminary study, the samples
were first heated to 200 °C at a rate of 10 °C/min. This
was followed by an isothermal period of 5 min before cooling to −50
°C and a 5 min isothermal period. Finally, the samples were heated
to the original starting temperature at 10 °C/min. The T_g’s were evaluated from the thermograms
as the middle point between the onset and offset temperatures. Because
of sample degradation, the maximum temperature was restricted to 100
°C in the subsequent measurements.

Sedrik R., Bonjour O., Laanesoo S., Liblikas I., Pehk T., Jannasch P, & Vares L. (2022). Chemically Recyclable Poly(β-thioether ester)s Based on Rigid Spirocyclic Ketal Diols Derived from Citric Acid. Biomacromolecules, 23(6), 2685-2696.

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Thermal and Mechanical Characterization of Films

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Stress-strain measurements. Stress-strain curves were measured with a Discovery HR-2 hybrid rheometer from TA Instruments. The films were stretched 2 μm/s until rupture. The environmental temperature was set to 25°C.
Thermogravimetric measurements (TGA). Thermogravimetric measurements were carried out with a Mettler Toledo TGA 850. The samples were heated from 25°C to 800°C at a rate of 10°C/min under nitrogen atmosphere.
Oscillatory modulus measurements. The films’ moduli were measured with a DMAQ800 from TA Instruments. The moduli were measured from −50°C to 200°C with a heating rate of 5°C/min. The strain amplitude was 0.5% with frequency of 1 Hz.
Differential scanning calorimetry (DSC). Calorimetric measurements were conducted on a TA Instruments DSC Q2000 differential scanning calorimeter. The measurement programs were adjusted based on the decomposition temperature and expected T_g of the sample. Heating and cooling rates were always 20°C/min. Heating was started from −80°C.

Salminen L., Karjalainen E., Aseyev V, & Tenhu H. (2021). Tough Materials Through Ionic Interactions. Frontiers in Chemistry, 9, 721656.

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Comprehensive Materials Characterization Protocol

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The information of phase and crystalline structure was analyzed at different temperatures by an XRD with a Cu Kα radiation (Empyrean, PANalytical B.V., The Netherlands). DSC was conducted by using a DSC-Q2000 differential scanning calorimeter (TA Instrument Co., DE, USA). PFM was performed with a Smena P47H (NT-MDT Co., Moscow, Russia). SHG measurement was carried out to explore the nonlinear optical property of the materials. The incident laser is produced by a Ti:sapphire oscillator with a central wavelength of 800 nm, a pulse duration of 120 fs, and a repetition of 82 MHz. Au top electrodes with a diameter of 1 mm were sputtered by an ion sputter coater (SBC-12, KYKY, China) for the electrical measurements. P-E loops were collected using the Polarization Loop Test System (CPE1601, PolyK Technologies, State College, PA, USA) with the Sawyer-Tower circuit. Dielectric spectra were acquired over a broad temperature range using the Dielectric Test System (PK-CPT1705, PolyK Technologies, State College, PA, USA). Pyroelectric signals of the samples were collected by the Pyroelectric Test System (PK-SPIV17T, PolyK Technologies, State College, PA, USA) on the basis of the Byer-Roundy method (36 ). The heating rate for the measurements of dielectric constants and losses, and pyroelectric coefficients as a function of temperature is 2 K min⁻¹.

Li W., Tang G., Zhang G., Jafri H.M., Zhou J., Liu D., Liu Y., Wang J., Jin K., Hu Y., Gu H., Wang Z., Hong J., Huang H., Chen L.Q., Jiang S, & Wang Q. (2021). Improper molecular ferroelectrics with simultaneous ultrahigh pyroelectricity and figures of merit. Science Advances, 7(5), eabe3068.

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Thermal Stability and Glass Transition of Polymers

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Thermogravimetric analysis
(TGA) was performed using TA Instruments TGA Q500 apparatus to determine
the thermal stability of the polymers under a N₂ atmosphere.
The temperature was increased to 600 °C at a heating rate of
10 °C min^–1. The thermal decomposition temperature
(T_d,95) was determined at 5% weight loss.
Differential scanning calorimetry (DSC) analysis was carried out
using a TA Instruments DSC Q2000 differential scanning calorimeter.
Dried samples were transferred to aluminum pans, which were hermetically
sealed. The linear polymethacrylate and de-crosslinked polymer samples
were first heated to 140–200 °C, then cooled to −50
°C, and finally heated to 140–200 °C. The (re-)crosslinked
polymer samples were first heated to 160–200 °C, then
cooled to −50 °C, and finally heated to 160–200
°C. The upper temperature limit depended on the T_d,95 of the particular polymer under measurement. The
scan rate in all cases was 10 °C min^–1 during
the temperature program. The T_g values
of the polymers were evaluated from the second heating scans by identifying
the inflection points.

Matt L., Sedrik R., Bonjour O., Vasiliauskaité M., Jannasch P, & Vares L. (2023). Covalent Adaptable Polymethacrylate Networks by Hydrazide Crosslinking Via Isosorbide Levulinate Side Groups. ACS Sustainable Chemistry & Engineering, 11(22), 8294-8307.

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Thermal Analysis of Starch Paper Nanocomposites

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Thermogravimetric analyses of starch paper nanocomposites were carried out with a TGA 178 Q50 (TA Instrument, New Castle, DE, USA). Around 2 mg of each sample was placed in an aluminium pan and heated from 20 °C up to 550 °C at a rate of 10 °C/min, under nitrogen at 40 mL/min flow rate.
Differential scanning calorimetry (DSC) analyses were performed using a DSC Q2000 Differential Scanning Calorimeter (TA Instruments) in a nitrogen gas atmosphere. Samples weighing approximately 4 mg were used for DSC measurements, and were placed in a standard aluminium pan and the maximum ramp temperature was set at 170 °C starting from 10 °C, at a rate of 10 °C /min with isothermal for 5 min. After an isothermal phase, the samples were cooled down to −10 °C at a rate of 10 °C/min. After that, a second heating ramp up to 170 °C from 10 °C at a rate of 10 °C/min was recorded.

Trotta F., Da Silva S., Massironi A., Mirpoor S.F., Lignou S., Ghawi S.K, & Charalampopoulos D. (2024). Advancing Food Preservation: Sustainable Green-AgNPs Bionanocomposites in Paper-Starch Flexible Packaging for Prolonged Shelf Life. Polymers, 16(7), 941.

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Thermal Characterization of Drug Formulations

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A DSC Q2000 Differential Scanning Calorimeter (TA Instrument Co., USA) was used to analyse the thermal behaviour of the unprocessed crystalline drugs, SD neat drugs, and ASD, before and after humidity exposure. Depending on the sensitivity required for the analyses, either standard DSC or modulated DSC was used. The DSC cell was calibrated with indium (melting temperature, T_m = 156.59 °C and heat of fusion, H_f = 28.57 J/g) and purged with 50 mL/min of nitrogen. Detailed protocols for the DSC and modulated DSC (MDSC) are provided below.

Edueng K., Mahlin D., Larsson P, & Bergström C.A. (2017). Mechanism-based selection of stabilization strategy for amorphous formulations: Insights into crystallization pathways. Journal of Controlled Release, 256, 193-202.

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Thermal Stability Analysis of 3D-Printed Scaffolds

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To compare the denaturation temperatures of the 3D-printed scaffolds to determine their stability, a Q2000 Differential scanning calorimeter (DSC) (TA Instruments, New Castle, DE, USA) was utilized. The 3D-printed scaffolds were printed, dissected, and then placed in the bottom of aluminum sample pans (~5 mm in diameter). These pans were then hermetically sealed. The DSC heated from −5 °C to 120 °C with a temperature ramp rate of 3 °C/min with modulation every 80 s ± 0.64 °C. The denaturation temperatures were determined using Universal Analysis software (Standard, 2007).

Snider C.L., Glover C.J., Grant D.A, & Grant S.A. (2024). Investigation of Liquid Collagen Ink for Three-Dimensional Printing. Micromachines, 15(4), 490.

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Nanometal Fluids: Interfacial Tension and Thermal Cracking

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Nanometal fluids of different mass fractions were prepared, and the surface tension and oil–water interfacial tension of different concentrations of fluids were tested by a spinning drop interfacial tensiometer TX-500C (Shanghai Geology Instrument Institute, Shanghai, China). All of the interfacial tension measurements were conducted at 25 °C under atmospheric pressure. The thermal catalytic cracking effect of nanometal fluids on Bohai heavy oil at different heating rates was carried out using the Q50 thermogravimetric analyzer (TGA, TA Instruments, New Castle, DE, USA), under a nitrogen atmosphere. A Q2000 differential scanning calorimeter (DSC, TA Instruments, New Castle, DE, USA) was applied to investigate the thermal behavior of the heavy oil. A EA3000 elemental analyzer (EuroVector, Pavia, Italy) was used to determine the content of carbon and hydrogen in the heavy oil.

Sun A., Yao C., Zhang L., Sun Y., Nan J., Teng H., Zang J., Zhou L., Fan Z, & Tong Q. (2023). Preparation of Surface-Active Hyperbranched-Polymer-Encapsulated Nanometal as a Highly Efficient Cracking Catalyst for In Situ Combustion of Heavy Oil. Molecules, 28(14), 5328.

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Thermal Analysis of Food Samples

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Thermal analysis was carried out with a Q2000 Differential Scanning Calorimeter (DSC) (TA Instruments, New Castle, USA) according to a previous methodology (Espert et al., 2021 (link)) with slight modifications. 11–15 mg of sample was weighed into an aluminum pan and then sealed with a press. An empty pan was used as control. Samples (10–15 mg) were hermetically sealed in an aluminum pan and heated from 20 to 130 °C at the rate of 5 °C/min under a nitrogen atmosphere. All results were recorded and analyzed by the Universal Analysis 2000 software (TA Instruments, New Castle, DE).

Wang Q., Espert M., Salvador A, & Sanz T. (2023). Shortening replacement by emulsion and foam template hydroxypropyl methylcellulose (HPMC)-based oleogels in puff pastry dough. Rheological and texture properties. Current Research in Food Science, 7, 100558.

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