Methodology for DSC calibration i nhigh heating rates

Braga, Carlos Isidoro; Rezende, Mirabel Cerqueira; Costa, Mirco

doi:10.5028/jatm.2011.03021911

Cited by 20 publications

(6 citation statements)

References 14 publications

(20 reference statements)

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“…(1), (2), and (3) refer to the first, second and third peaks, respectively, that exhibited Gelucire 50/13 during melting. shifted the melting peaks of the two lipids as well as of BC to higher temperatures (Table 1) as it was expected from literature [25]. Fig.…”

Section: Tablesupporting

confidence: 69%

Flow-through cross-polarized imaging as a new tool to overcome the analytical sensitivity challenges of a low-dose crystalline compound in a lipid matrix

Adler

Schönenberger²,

Teleki³

et al. 2015

Journal of Pharmaceutical and Biomedical Analysis

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Section: Tablesupporting

confidence: 69%

Flow-through cross-polarized imaging as a new tool to overcome the analytical sensitivity challenges of a low-dose crystalline compound in a lipid matrix

Adler

Schönenberger²,

Teleki³

et al. 2015

Journal of Pharmaceutical and Biomedical Analysis

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“…Because this study only focused on the specific heat capacity of the molten salt-based MWCNT nanomaterials, during the heating process, the temperature was rapidly ramped at 20 C/min. This ramp rate is fast in comparison with those used in other DSC studies [27e29], but increased the measurement accuracy of the specific heat capacity [30], because the measured heat flow was proportional to the sample mass, specific heat capacity, and heating rate, as shown in Eq. (1).…”

Section: Specific Heat Capacity Measurementsmentioning

confidence: 98%

Effect of solvent on specific heat capacity enhancement of binary molten salt-based carbon nanotube nanomaterials for thermal energy storage

Banerjee

2015

International Journal of Thermal Sciences

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a b s t r a c tThe specific heat capacity of a binary molten salt-based carbon nanotube nanomaterial was experimentally measured in both solid and liquid phases. The effect of the solvent on the specific heat capacity was examined for a wide range of chemical compositions for a binary carbonate salt mixture. The binary salt mixture consisted of lithium carbonate and potassium carbonate. Multi-walled carbon nanotubes were dispersed in the solvent to synthesize the nanomaterials. A surfactant, gum arabic, at 1% mass concentration with respect to the solvent was added to disperse the carbon nanotubes homogeneously in the salt mixture. The results indicated that the specific heat capacity of the carbonate salt mixtures was significantly enhanced by adding the carbon nanotubes in the solid and liquid phases. Moreover, the enhanced specific heat capacity was affected by the chemical composition of the salt mixtures. Furthermore, molecular dynamics simulations were used to examine the effects of different chemical compositions of the binary salt mixtures with nanotubes on the specific heat capacities of the nanomaterials.

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“…All these processes superimpose in the response of different physical properties of soils with increasing temperature. In classical thermal analyses frequently applied in soil science, the effects of heating rate, sample size and grain size of the material are well studied (Gallagher et al, 2003;Romero et al, 2008;Braga et al, 2011;Fernandez et al, 2011;Kousksou et al, 2011). Low field magnetic susceptibility is another basic property of the material, reflecting the content of strongly magnetic minerals.…”

Section: Discussion Thermomagnetic Analysis Of Magnetic Susceptibilitmentioning

confidence: 99%

Thermomagnetic Behavior of Magnetic Susceptibility—Heating Rate and Sample Size Effects

Jordanova

2016

Front. Earth Sci.

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Thermomagnetic analysis of magnetic susceptibility k(T) was carried out for a number of natural powder materials from soils, baked clay and anthropogenic dust samples using fast (11 • C/min) and slow (6.5 • C/min) heating rates available in the furnace of Kappabridge KLY2 (Agico). Based on the additional data for mineralogy, grain size and magnetic properties of the studied samples, behavior of k(T) cycles and the observed differences in the curves for fast and slow heating rate are interpreted in terms of mineralogical transformations and Curie temperatures. The effect of different sample size is also explored, using large volume and small volume of powder material. It is found that soil samples show enhanced information on mineralogical transformations and appearance of new strongly magnetic phases when using fast heating rate and large sample size. This approach moves the transformation at higher temperature, but enhances the amplitude of the signal of newly created phase. Large sample size gives prevalence of the local micro-environment, created by evolving gases, released during transformations. The example from archeological brick reveals the effect of different sample sizes on the observed Curie temperatures on heating and cooling curves, when the magnetic carrier is substituted magnetite (Mn0.2Fe2.70O4). Large sample size leads to bigger differences in Tcs on heating and cooling, while small sample size results in similar Tcs for both heating rates.

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Methodology for DSC calibration i nhigh heating rates

Cited by 20 publications

References 14 publications

Flow-through cross-polarized imaging as a new tool to overcome the analytical sensitivity challenges of a low-dose crystalline compound in a lipid matrix

Flow-through cross-polarized imaging as a new tool to overcome the analytical sensitivity challenges of a low-dose crystalline compound in a lipid matrix

Effect of solvent on specific heat capacity enhancement of binary molten salt-based carbon nanotube nanomaterials for thermal energy storage

Thermomagnetic Behavior of Magnetic Susceptibility—Heating Rate and Sample Size Effects

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