نتایج جستجو برای: differential scanning calorimetry dsc

تعداد نتایج: 444301  

Journal: :Crystals 2022

In this study, the initial temperature of (?) to (? + ?) phase transformation ?-quenched N36 zirconium alloy was determined using differential scanning calorimetry (DSC) and metallographic techniques. Diagnosis analysis difference between two techniques were also conducted. It found that transition temperature, obtained by techniques, lies in a range 710–715 °C. This value is lower than recorde...

2004

“Heat Flux” instruments use an alternative method where both pans are heated from a single heating source in the DSC cell walls. The temperature difference between the two pans is monitored using thermocouples positioned under the sample and reference pans. The actual heat flow into or out of the sample pan is calculated from the measured temperature difference. This approach is that used by TA...

In this paper, the focus is on a new kind of biodegradable semi-interpenetrating polymer networks, which derived from ɛ-caprolactone, lactide, 1,4-butane diisocyanate and ethylenediamine and also its potential has been investigated in soft tissue engineering applications. The polymers were characterized by nuclear magnetic resonance (NMR) spectrometry, fourier transform infrared spectroscopy (F...

Journal: :Ferroelectrics 2023

Specific heat capacity measurements by differential scanning calorimetry (DSC) of single crystals solid solutions LiNbO3 and LiTaO3 are reported compared with corresponding ab initio calculations, the aim to investigate variation ferroelectric Curie temperature as a function composition. For this purpose, these were grown Czochralski pulling along c-axis. Elemental composition Nb Ta was investi...

Journal: :Journal of physics 2023

Abstract In order to reveal the interaction law of high active aluminum powder with RDX and HMX mixture, thermal decomposition behavior highly Al its typical nitramine explosive were studied by differential scanning calorimetry (DSC), thermogravimetry (TG), thermo-mass spectrometry (TG-DTG-DSC-MS) CO 2 laser ignition technology. Results show that when nanometer respectively, two mixing action i...

Journal: :Molecules 2010
Jiping Wen Benguo Liu Erdong Yuan Yuxiang Ma Yongyi Zhu

In this study a complex of naringenin with hydroxypropyl-beta-cyclodextrin (HP-beta-CD) was prepared to improve the hydrophilicity of naringenin. The physicochemical properties of the complex were analyzed by ultraviolet-visible spectrometry (UV), infrared spectrometry (IR), X-ray diffractometry (XRD), differential scanning calorimetry (DSC). The result showed that naringenin had been molecular...

2014
Maria-Gabriela Tamba Chih Hao Yu Bai Jia Tang Christopher Welch Alexandra Kohlmeier Christopher P. Schubert Georg H. Mehl

The construction of liquid crystal compositions consisting of the dimeric liquid crystal, CB_C9_CB (cyanobiphenyl dimer = 1'',9''-bis(4-cyanobiphenyl-4'-yl)nonane), and the range of nematic systems is explored. The materials include a laterally functionalized monomer, which was used to construct a phase diagram with CB_C9_CB, as well as one laterally linked dimer liquid crystal material and two...

2011
Uhood J. Al-Hamdani

A new homologous series (ten compounds) of 2-hydroxy azo compounds SR(n) (where n:1-10) were synthesized. Their structures were elucidated using spectroscopic techniques such as IR (Infrared), (1)H-NMR as well as elemental analysis. Mesomorphic properties and phase transitions were studied using polarized hot stage optical microscopy and differential scanning calorimetry (DSC), and are discusse...

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