Synthesis and thermal analysis of linear triblock copolymers based on methacrylate esterJournal of Thermal Analysis - Tập 107 - Trang 355-363 - 2010
Bo Lin, Hongdong Zhang, Yuliang Yang
Two linear triblock copolymers poly(t-butyl methacrylate-b-2-hydroxyl ethyl methacrylate-b-N,N-dimethylaminoethyl methacrylate) (PtBMA97-b-PHEMA18-b-PDMAEMA98) and poly(t-butyl methacrylate-b-glycidyl methacrylate-b-styrene) (PtBMA137-b-PGMA23-b-PSt156) were controlled synthesized with living RAFT polymerization technique under the chain transfer of cumyl dithiobenzoate. The results of FT-IR spect...... hiện toàn bộ
Differential scanning calorimetry an essential tool to characterize LiMn2O4 spinelJournal of Thermal Analysis - Tập 73 - Trang 191-200 - 2003
J. M. Amarilla, R. M. Rojas
A series of LiMn2O4 samples with nominal Li/Mn molar ratio=1/2 has been synthesized at 700 and 750°C by the ceramic procedure from Mn2O3 and several lithium sources. Lattice parameters determined from X-ray diffraction patterns are within a narrow range, from a
c=8.238(1) Å to a
c=8.245(1) Å, Da
c/a
c<0.1%. The study by differential scanning calorimetry (DSC) shows that the temperatures of the cub...... hiện toàn bộ
Kinetics of initial thermal decomposition and detonation parameters-studies on RDX:TNT systemJournal of Thermal Analysis - Tập 35 - Trang 1181-1189 - 1989
N. M. Bhide, S. R. Naidu, E. M. Kurian, K. R. K. Rao
The initial low temperature thermal decomposition of various compositions in the binary system—1,3,5 trinitro-1,3,5 triazacyclohexane (RDX) and 2,4,6 trinitro toluene (TNT) has been studied using thermogravimetry, high temperature infrared spectroscopy and photomicroscopy. A linear correlation has been observed between the activation energies for the initial stage of thermal decomposition and velo...... hiện toàn bộ
IBM PC-based multipurpose data-acquisition system for thermal analysisJournal of Thermal Analysis - Tập 36 - Trang 1855-1859 - 1990
J. Házi, L. Pöppl, ö. Pintér, L. Daruházi
A multipurpose data-acquisition system based on IBM PC or compatible computers has been developed for analog thermoanalytical equipment (especially for the Mettler TA 1 and TA 2 and Derivatographs). The system is versatile, easily tailored to specific requirements, and permits multitask operation, i. e. the collection of data from current experiments and the evaluation of results from previous exp...... hiện toàn bộ
Energetic characterization of malt bagasse by calorimetry and thermal analysisJournal of Thermal Analysis - Tập 112 - Trang 713-717 - 2012
Luana Gomes Cordeiro, Ânoar Abbas El-Aouar, Cassius Vinícius Bezerra de Araújo
This study evaluates the thermal behavior of bagasse malt fresh and its heat capacity by means of calorimetry for samples with different moisture contents (50, 40, 30, 20, and 15 %). Chemical analysis was used to determine the content of volatiles, fixed carbon, and ash. The thermal degradation of malt bagasse presents two mass loss steps attributed to the release of moisture and to the decomposit...... hiện toàn bộ
Thermodynamic behavior of lipid nanoparticles upon delivery of Vitamin E derivatives into the skin: in vitro studiesJournal of Thermal Analysis - Tập 108 - Trang 275-282 - 2011
J. F. Fangueiro, A. S. Macedo, S. Jose, M. L. Garcia, S. B. Souto, E. B. Souto
This article reports the thermodynamic changes of lipid nanoparticles (LN) upon delivery of lipophilic vitamin E derivatives to the skin. Skin penetration of α-tocopherol (α-T) and α-tocopherol acetate (α-Ta) into and across porcine ear skin was investigated in vitro using tape-stripping test in modified Franz diffusion cells. Wide angle X-ray scattering (WAXS) and differential scanning calorimetr...... hiện toàn bộ