The thermal analysis of wheat starch with different concentrations of PA was conducted using a DSC (DSC 250, TA Instruments, New Castle, DE, USA) under a N2 atmosphere [4 (link)]. To perform the analysis, 3 mg of wheat starch was mixed with 6 μL of various concentrations of PA solutions. This mixture was then hermetically sealed in an aluminum pan. To ensure full hydration, all samples were equilibrated at room temperature for 12 h. The temperature range for the analysis was set from 35 °C to 95 °C, and the heating rate was 10 °C/min. The DSC equipment software (TRIOS software version 5.4.0.300) was used to calculate several parameters of interest, including the onset temperature (To), peak temperature (Tp), conclude temperature (Tc), and the area of the main endothermic peak (J/g).
Dsc 250
Manufactured by TA Instruments
Sourced in United States
The DSC 250 is a differential scanning calorimeter (DSC) that measures the heat flow associated with physical and chemical changes in a material as a function of temperature or time. It can be used to analyze a wide range of materials, including polymers, metals, ceramics, and pharmaceuticals.
Automatically generated - may contain errors
Lab products found in correlation
Trios software, by TA Instruments (4 mentions)
High volume pans, by TA Instruments (2 mentions)
X pert pro mpd, by Malvern Panalytical (2 mentions)
Tga 5500, by TA Instruments (2 mentions)
Escalab 250xi, by Thermo Fisher Scientific (2 mentions)
Ftir spectrometer, by PerkinElmer (1 mentions)
Quanta 450 feg, by Thermo Fisher Scientific (1 mentions)
X pert, by Malvern Panalytical (1 mentions)
Jem 2100, by JEOL (1 mentions)
Spectrum two, by PerkinElmer (1 mentions)
Xrd 7000, by Shimadzu (1 mentions)
Spectrometer, by PerkinElmer (1 mentions)
Dxrxi system, by Thermo Fisher Scientific (1 mentions)
S 4800, by Hitachi (1 mentions)
Acquity advanced polymer chromatography system, by Waters Corporation (1 mentions)
Eca 600 nmr spectrometer, by JEOL (1 mentions)
Rint 2200, by Rigaku (1 mentions)
Unity 300 spectrometer, by Agilent Technologies (1 mentions)
2400 2 analyzer, by PerkinElmer (1 mentions)
Tga 550, by TA Instruments (1 mentions)
86 protocols using dsc 250
1
Thermal Analysis of Wheat Starch with PA
2
Characterization of SGO Doped CA Membranes
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FTIR spectra for GO and SGO composite membranes were taken using a Perkin Elmer FTIR spectrometer (Waltham, MA, USA). The morphological features (i.e., top surface and membrane microstructures) of the prepared membranes were characterized using SEM (FEI, Quanta FEG 450, Thermo Scientific, Waltham, MA, USA). The crystalline structure of prepared SGO doped CA membranes was characterized through X-ray diffraction (PANalytical X’pert, Malvern Panalytical, Malvern, UK) technique, respectively.
Thermal properties of SGO doped composite membranes were determined using differential scanning calorimetry (DSC-250, TA instruments, New Castle, DE, USA) at a 10 °C/min heating rate under nitrogen flow of 30 mL/min. Ten milligram samples were sealed in an aluminum pan and scanned over a range of 25 °C to 500 °C [28 (link)].
Thermal properties of SGO doped composite membranes were determined using differential scanning calorimetry (DSC-250, TA instruments, New Castle, DE, USA) at a 10 °C/min heating rate under nitrogen flow of 30 mL/min. Ten milligram samples were sealed in an aluminum pan and scanned over a range of 25 °C to 500 °C [28 (link)].
3
Physicochemical Characterization of FX@PVP Nanoparticles
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A laser particle size potential analyzer (DT 1202, Dispersion Technology, Inc. Bedford Hills, NY, USA) was used to determine particle sizes of the NPs. Fourier Transform Infrared (FTIR; Perkin Elmer Spectrum two, CT, USA) spectra were acquired in potassium bromide pellets, with resolution of 1 cm−1 from 4000 to 450 cm−1, in order to identify chemical interactions between FX and PVP. Thermal properties of the nanoparticles were determined by Differential Scanning Calorimetry (DSC250, TA Instrument, USA). Samples were weighed (3 to 5 mg) in sealed aluminum pans under nitrogen flow (50 mL/min) and heated from 20 to 300 °C at 20 °C/min. X-ray diffraction analyses (XRD; XRD7000, Shimadzu, Tokyo, Japan) were carried out from 10° to 70° (2θ) at 5°/min, using Cu Kα radiation generated at 40 kV and 30 mA, to reveal changes in the crystalline structure of FX after the encapsulation process. The morphological characterization of the FX@PVP NPs was evaluated using Transmission Electron Microscopy (TEM; JEOL model JEM 2100, 200 kV, Tokyo, Japan). Diluted samples were dripped onto 300 mesh parlodium-coated copper grids and dried under room temperature, then stained with 2% uranium acetate for analyzing.
4
Thermal Analysis of Cisplatin Nanoformulation
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DSC analysis was performed to evaluate any possible interaction and to check the physical state of cisplatin in the developed formulation. The differential scanning calorimetric (DSC) analysis of cisplatin, CHEMS, DOPE, DSPE-PEG2000 and CDDP@PLs was analyzed via a differential scanning calorimeter (DSC-250, TA instruments, New Castle, DE, USA). In the analysis, the calibration was carried out by using indium for the source of temperature and heat flow. Samples were placed on one pan, and another aluminum pan was used as a reference. The samples were then heated over the temperature range of 25–400 °C [24 (link)].
5
Thermal Analysis of Material Samples
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The DSC analysis was performed with a DSC 250 instrument (TA Instruments).
DSC samples of approximately 10 mg were weighed and measured against
an empty pan as a reference. Measurements were carried out under a
80 mL/min nitrogen flow rate according to the following protocol:
first heating from 25 to 200 °C at 10 °C/min, first cooling
(quenching after first heating) from 200 to −30 °C at
50 °C/min and 2 min of isotherm, and second heating from −30
to 200 °C at 10 °C/min. In particular, the first heating
scan was used to erase any prior thermal history of the sample and
the second heating scan was used to evaluate glass temperature (Tg).
DSC samples of approximately 10 mg were weighed and measured against
an empty pan as a reference. Measurements were carried out under a
80 mL/min nitrogen flow rate according to the following protocol:
first heating from 25 to 200 °C at 10 °C/min, first cooling
(quenching after first heating) from 200 to −30 °C at
50 °C/min and 2 min of isotherm, and second heating from −30
to 200 °C at 10 °C/min. In particular, the first heating
scan was used to erase any prior thermal history of the sample and
the second heating scan was used to evaluate glass temperature (Tg).
6
Characterization of Zinc Electrodeposition
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SEM (Hitachi S-4800) was employed to detect the morphologies of Zn deposits on the Zn-metal anodes or the Ti foils. FTIR measurements were carried out on a Perkin-Elmer spectrometer in the transmittance mode. XRD patterns were recorded in a Bruker-AXS Micro-diffractometer (D8 ADVANCE) with Cu-Kα1 radiation (λ = 1.5405 Å). Raman spectra were recorded at room temperature using a Thermo Scientific DXRXI system with excitation from an Ar laser at 532 nm. A differential scanning calorimeter (TA, dsc250) was used to evaluate the thermal properties of the electrolytes. Samples are scanned from −80–100 °C at a rate of 5 °C–min−1 under a nitrogen atmosphere. An in situ optical microscope from the Olympus Corporation was used to observe the depositional morphology of Zn with different electrolytes in real time in order to study the interfacial stability. XPS was performed on a Thermo Scientific ESCA Lab 250Xi to characterize the surface components. TOF-SIMS (Germany, TOF-SIMS5) was employed to measure the components as a function of depth.
7
Thermal Analysis of Drug-Polymer Interactions
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Prior to formulating the films via melt-cast technique, differential scanning calorimetry analysis was used to determine the interaction between the drug and the polymers that were used. DSC spectrum of pure TA, PEO and Soluplus® were obtained while using a DSC 250 (TA instruments, New Castle, DE, USA). Approximately 5 mg of the samples were sealed in different T0 aluminium pans and they were scanned from 0 to 300 °C with constant nitrogen purging at a heating rate of 20 °C/min. Thermograms were plotted on the basis of change in the heat flow as compared to sealed blank aluminium pan taken as reference.
8
Synthesis and Characterization of Thermo-Responsive TGM
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The four-part TGM was synthesized according to previous protocols [25 (link)]. NIPAAm, GMA, DBA, and AA were added to nitrogen-purged dioxane at a molar feed ratio of 86.5:7.5:3.5:2.5 respectively, along with 0.1% w/v AIBN, and reacted at 65 °C for 16 h. The solvent was then removed with rotary evaporation, and the remaining reaction product was redissolved in acetone and twice purified via dropwise ether precipitation and filtration. The resulting product was then stored under vacuum until further use. The average molar ratio of the comonomers in the synthesized TGM product was confirmed with a combination of 1H NMR (600 MHz Bruker NEO Digital NMR Spectrometer, Bruker, Billerica, MA) and acid-base titration to be 87.9:6.5:1.9:3.7. The final number-average molecular weight (Mn), weight-average molecular weight (Mw), and polydispersity index (PDI) of purified TGM were measured by an ACQUITY advanced polymer chromatography (APC) system (Waters Corporation, Milford, MA) with reference to polystyrene standards to be 19849 ± 1614 Da, 54446 ± 296 Da and 2.76 ± 0.23, respectively. The average LCST of the TGM was determined via differential scanning calorimetry (DSC250, TA Instruments, New Castle, DE) to have an onset of 19.9 ± 0.7 °C and a peak of 25.5 ± 1.0 °C.
9
Structural and Thermal Characterization Methods
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X-ray diffraction (XRD) patterns were acquired using a Rigaku RINT2200 (Japan) with Cu Kα radiation over a scan range of 3–40° at a rate of 2° min−1. NMR spectra in solutions were recorded using a Varian Unity-300 spectrometer (Palo Alto, CA, USA) with tetramethylsilane (TMS) as an internal standard. The DBU contents in the intercalation compounds of γ-TiP were measured using a PerkinElmer 2400II analyzer (Waltham, MA, USA). The 13C CPMAS NMR spectra were recorded using a JEOL ECA-600 NMR spectrometer (Tokyo, Japan). Thermogravimetric (TG) analysis was carried out using a TA instrument TGA-550 at a heating rate of 10 °C min−1 under nitrogen. Differential scanning calorimetry (DSC) was carried out using a TA instrument DSC250 at a heating rate of 10 °C min−1 under nitrogen.
10
Thermal Analysis of PET Nanofibrils Composites
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A differential scanning calorimeter (DSC 250, TA Instruments, New Castle, DE, USA) was used to analyze the thermal behavior of the composites and the influence of the PET nanofibrils. After spunbonding, the fibers were cold pressed (room temperature) together into 16 mm diameter by 2 mm thick disks. The cold press compacts the macrofibers together and increases the bulk density, giving the disks smooth top and bottom surfaces while preserving the thermal history. From the cold pressed disk, a DSC sample between 10 and 15 mg was cut and sealed within aluminum Tzero pans. The samples were then run on a heat–cool–heat cycle with a ramp of 10 °C/min under a nitrogen atmosphere.
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