نتایج جستجو برای: differential scanning calorimeter
تعداد نتایج: 437384 فیلتر نتایج به سال:
The potential of liquisolid systems to improve the dissolution properties of a water-insoluble agent (indomethacin) was the purpose of this survey. In this study, different formulations of liquisolid tablets using different co-solvents (non-volatile solvents) were prepared and the effect of several amounts of them on the dissolution behaviour of indomethacin was investigated. It is worth mentio...
Hydroxyl terminated polybutadiene (HTPB) is the most important and versatile binder in composite solid propellant, But the immiscibility of this polymer with traditional energetic plasticizers is a disadvantage limits its application as a binder for compounding of high energy propellant. In this research, two types of energetic plasticizer, 2-ethylhexyl nitrate (2EHN) and 2-ethyl-2-buthyl-1, 3 ...
Silico-ferrites of calcium and aluminum (SFCA) are formed during the sintering process, their changes critical to quality sinter. Aiming further clarify effect BaO (0 mass%, 1 2 3 5 7 9 mass%) on bonding process SFCA. In this work, X-ray diffraction (XRD), scanning electron microscopy energy dispersive spectroscopy (SEM-EDS), thermogravimetry-differential calorimeter (TG-DSC) were used analysis...
the potential of liquisolid systems to improve the dissolution properties of a water-insoluble agent (indomethacin) was the purpose of this survey. in this study, different formulations of liquisolid tablets using different co-solvents (non-volatile solvents) were prepared and the effect of several amounts of them on the dissolution behaviour of indomethacin was investigated. it is worth mentio...
one of the best and the most active ways for surveying thermal behaviour of materials is using differential scanning calorimetry. in this paper, the authors have studied thermal behaviour for schiff base ligand and their synthesized cobalt, nickel complexes. in this method, the sample is opposed to a controlled temperature change and its physical properties. here we studied melting point and tg...
A Ti40Zr40Ni20 quasicrystal (QCs) rod and ribbons were prepared by conventional casting rapid solidification. The X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission (TEM) differential calorimeter (DSC) techniques used to investigate the microtissue, phase composition, solidification features of samples; nano-indentation test was carried out at room temperature. results...
Commercial coin cells with LiNi0.6Mn0.2Co0.2O2 positive electrode material were investigated using an accelerating rate calorimeter and a Tian-Calvet calorimeter. After cycling charging to the selected states of charge (SOCs), studied under thermal abuse conditions heat-wait-seek (HWS) method heating step 5 K threshold for self-heating detection 0.02 K/min. The onset temperature rise, i.e., run...
Abstract Function modification of polyvinyl alcohol (PVA) having phosphorus-containing heterocyclic compounds is believed to have thermal and biological applications in the area polymers. The synthesis PVA (P-PVA) was performed using γ-radiation. chemical structure composite polymer confirmed by spectroscopic techniques FT-IR, 1 H, 13 C, 31 P-NMR. Photosensitive properties polymers were investi...
introduction: the aim of this study was to compare several metallurgic properties of neoniti instrument with four other commonly used endodontic rotary files. methods and materials: neoniti a1 (25/0.08), race (25/0.06), mtwo (25/0.06), twisted file (25/0.06) and protaper next x2 (25/0.06) were examined by differential scanning calorimetry (dsc) before and after heat treatment at 500 ° c. x-ray ...
Th ermodynam ic properties of sm all stru ctures, su ch as the m eltin g poin ts and the process of m ass tran sport, can be con sid erably different compared to materia l in th e bu lk form . Calorim etry is th e standard experim en tal techniqu e u sed to m easu re thermodynam ics properties. Howev er, th is techniqu e is extremely difficu lt to u se for th e study of sm all stru ctures becau...
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