Based on solution enthalpies of the solvated and unsolvated phases dissolved in DMF, the difference in crystal lattice energies, 9.8 kJ mol1, was calculated and the difference in entropies, 33 J mol1 K1 estimated. A possible mechanism explaining the low melting point of the solvate is ...
The melting point of form II is 234.3 °C. F2 has a small endothermic peak at 214.3 °C that can be classified as the melting peak of form I. The endothermic peaks of F1 at about 197.0 °C and F2 at 196.0 °C will be discussed in the following section. To clearly illustrate the ...
While untreated dry wood shows a thermal softening point ( T s ) of ca. 260°C, esterified wood meal samples with acyl groups larger than caproyl have a T s of around 100°C or less, and appeared to melt over the temperature range of 220° to 250°C. In this case, the melting ...
Based on solution enthalpies of the solvated and unsolvated phases dissolved in DMF, the difference in crystal lattice energies, 9.8 kJ mol -1 , was calculated and the difference in entropies, 33 J mol -1 K -1 estimated. A possible mechanism explaining the low melting point of the solvate...
The conformationof FBP molecules in the DMF solvate differs from analogous enantiomers in the unsolvated form. The differences are discussedfrom the point of view of the influence of the nature of the solvent on selective crystallisation of the enantiomers. A peculiarityof the solvate is its low ...
of 13-40 and the spinning solution a falling ball viscosity of 50- 1500 seconds. Specified salts are the chlorides of Li, Mg, Ca, Zn or Al, and also LiBr. Solvents may be DMF, DMA, N-methyl-pyrrolidone, tetramethylene sulphone or DMSO. Polymers used may be based on isophthalic acid ...
In parallel with this temperature measurement, the level of the electrolyte (HT) in the tank is measured from a reference point by recording the variation in voltage between the cathodic substrate and the probe, from which the position is determined by a potentiometer and of which the voltage ...
The value of flow time was an average of three values with a standard deviation within ±0.2 s. The flow time of H2SO4 and each of the polymer solutions were used to calculate the relative and specific viscosities. Single point intrinsic viscosities were then calculated using the Solomon and...
Initially, the temperature of PCMs increases like a conventional sensible storage material as they absorb heat until it reaches the melting point. Compared to sensible storage materials, a PCM absorbs and releases heat at a nearly constant temperature during the phase change and they can store 5–...