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Q2000 differential

Manufactured by TA Instruments
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The Q2000 Differential Scanning Calorimeter (DSC) is a thermal analysis instrument designed to measure the heat flow associated with physical and chemical changes in materials as a function of temperature or time. The Q2000 DSC provides accurate and reliable data on transition temperatures, heat capacities, and enthalpies of a wide range of materials.

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Q2000 (331 citations) Q2000 differential scanning calorimeter (45 citations) DSC Q2000 differential scanning calorimeter (9 citations) TA Q2000 differential scanning calorimeter (2 citations)

3 protocols using q2000 differential

1

Thermal Analysis of Material Samples

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Thermal studies were carried out on a Q2000 differential scanning calorimeter (DSC; TA Instruments, New Castle, DE, USA) calibrated with indium Tm = 155.78 °C ∆Hm = 28.71 J/g. Thus, three modulated heating–cooling cycles from 25 °C (298.15 K) to 300 °C (573.15 K) at a heating rate of 5 °C/min and a modulation of ±0.5 °C every 40s were used. Approximately, 10 mg of each sample was placed on a hermetic crucible with lid, and an empty hermetic crucible was used as a reference.
Linares V., Yarce C.J., Echeverri J.D., Galeano E, & Salamanca C.H. (2019). Relationship between Degree of Polymeric Ionisation and Hydrolytic Degradation of Eudragit® E Polymers under Extreme Acid Conditions. Polymers, 11(6), 1010.
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2

Quantifying Residual PVA in PGS Cores

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Residual PVA within the PGS cores was quantified via the heat of PVA crystallization. 4–9 mg samples of graft cores (n = 3) were thermally scanned in a Q2000 differential scanning calorimeter (DSC, TA Instruments). Samples were heated to 220°C, cooled to −10°C, and heated again to 220°C at 5°C/min. The area under the crystallization peak near 145°C was measured using the manufacturer’s software. [Fig. SIV–1(A)] Scans of pure PGS and PVA had revealed that PVA had a crystallization point there, but the PGS curve was flat. The measured heats of crystallization were compared to a calibration curve constructed using films of varying PGS:PVA mass ratios. [Fig. SIV–1(B)] Films had been cast from HFIP, cured at 120°C and 29 inHg vacuum for 48 h, and stored in desiccant until use.
Stowell C.E., Li X., Matsunaga M.H., Cockreham C.B., Fan H., Kelly K., Cheetham J., Tzeng E, & Wang Y. (2020). Poly(glycerol sebacate)-Based Vascular Grafts Show Rapid Cellularization and Degradation in the Ovine Arterial Circulation. Journal of tissue engineering and regenerative medicine, 14(11), 1673-1684.
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3

Thermal Analysis of Material Samples

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Thermal studies were carried out on a Q2000 differential scanning calorimeter (DSC; TA Instruments, New Castle, DE, USA) calibrated with indium Tm = 155.78 °C and ∆Hm = 28.71 J/g. Therefore, a modulated heating–cooling cycle from −10 °C (263.15 K) to 250 °C (523.15 K) at a heating rate of 5 °C/min was used. It was applied a ±0.5 °C modulation each 40 s. Approximately 10 mg of each sample was placed on a hermetic crucible with a lid, and an empty hermetic crucible was used as a reference.
Yarce C.J., Alhajj M.J., Sanchez J.D., Oñate-Garzón J, & Salamanca C.H. (2020). Development of Antioxidant-Loaded Nanoliposomes Employing Lecithins with Different Purity Grades. Molecules, 25(22), 5344.
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