Densities, Ultrasonic Velocities, Excess Properties and IR Spectra of Binary Liquid Mixtures of Organic Esters (Ethyl Lactate, Some Organic Carbonates)

Latha, S.; Flower, G. Little; Reddy, K. Rayapa; Rao, C. Venkata; Ratnakar, A.

doi:10.1007/s10953-016-0567-6

Cited by 14 publications

(2 citation statements)

References 64 publications

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“…The FT‐IR spectrum of MeNQ‐NQ eutectic expressed the summation of the characteristic vibration bands corresponding to its individual components without any considerable shift of the absorption bands, reflecting the absence of significant chemical interaction. It is noted here that the existence of hydrogen bonding would result in a slight decrease in the X−H stretching frequency [49]. Based on the molecular structure of MeNQ and NQ, the possible hydrogen bonds between the two molecules are suggested in Figure 9a.…”

Section: Resultsmentioning

confidence: 84%

Thermal behavior and microstructure of a Methylnitroguanidine‐Nitroguanidine energetic eutectic

You

Chen

Liao

et al. 2023

Propellants Explo Pyrotec

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To shed light on the structure-property relationship of a methylnitroguanidine (MeNQ)-nitroguanidine (NQ) eutectic, its thermal behavior and microstructure were studied by various techniques. The eutectic composition of MeNQ-NQ with the lowest melting temperature (T m ) of 149.9 °C was at the mole ratio of 7 : 3, as determined by temperature-composition (T-X) and melting enthalpy-composition (H-X) diagrams. The MeNQ-NQ eutectic exhibited a homogeneous network structure composed of the plate-shaped MeNQ and acicular NQ enriched phases that resulted in a uniform melting around the T m observed by in situ variable temperature optical microscopy. The X-ray diffraction from MeNQ-NQ eutectic showed peaks that were shifted to low scattering angle, an indication of the expansion of its crystal lattice and the formation of solid solutions. Small-angle X-ray scattering from the sample showed a rough interface between the MeNQ-and NQ-enriched phases. Infrared spectral data showed absorption peaks due to À NH 2 and À CH 3 groups that were red shifted relative to the raw materials, an indication of hydrogen bond interactions between MeNQ and NQ molecules.

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Section: Resultsmentioning

confidence: 84%

Thermal behavior and microstructure of a Methylnitroguanidine‐Nitroguanidine energetic eutectic

You

Chen

Liao

et al. 2023

Propellants Explo Pyrotec

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“…The corresponding values are tabulated in the Table 2 and the increasingly negative as the quality of the system of 1propanol, 1-butanol and 1-pentanol is lacking these standard due to increasing of temperature [11][12][13][14]. Table 3 shows that the magnitude of Gruenberg and Nissan equivalent parameter (d) is in the strong interaction between the components.…”

Section: Resultsmentioning

confidence: 99%

Acoustical properties of molecular interactions in 1-propanol, 1-butanol and 1-pentanol with tetrahydrofuran in cyclohexanone at various temperatures

Ubagaramary¹,

Enoch²,

Mullainathan³

et al. 2018

biomedicalresearch

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Solid–Liquid Phase Equilibria, Molecular Interaction and Microstructural Studies on (N-(2-ethanol)-p-nitroaniline + N-(2-acetoxyethyl)-p-nitroaniline) Binary Mixtures

et al. 2018

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Differential scanning calorimetry (DSC) is used to investigate the thermal properties of N-(2-ethanol)-p-nitroaniline + N-(2-acetoxyethyl)-p-nitroaniline, and their binary systems. The experimental results demonstrate that the studied binary system presents a simple eutectic behavior and the corresponding mole fraction (x eu) of N-(2-ethanol)p-nitroaniline at the eutectic point is 0.5486, whereas the temperature (T eu) is found to be equal to 363.6 K. The quality of the solid-liquid equilibria (SLE) data has been checked by thermodynamic consistency tests, presenting good quality factor. The SLE data have been correlated by means of Wilson, NRTL, and UNIQUAC equations. The three models describe satisfactorily the phase diagram as the root-mean-square deviations for the equilibrium temperatures vary from 1.25 K to 2.07 K. Nevertheless, the Wilson model provides the best correlation results. The three equations have also been used to compute excess thermodynamic functions viz. excess Gibbs energy, enthalpy and entropy. The obtained results revealed a sensitive positive deviation to ideality thus demonstrating the nature of the interactions between the compounds forming the mixture. Microstructural studies have been carried out by FTIR, XRD and optical microscopy showing weak molecular interactions for the eutectic mixture.

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Densities, Ultrasonic Velocities, Excess Properties and IR Spectra of Binary Liquid Mixtures of Organic Esters (Ethyl Lactate, Some Organic Carbonates)

Cited by 14 publications

References 64 publications

Thermal behavior and microstructure of a Methylnitroguanidine‐Nitroguanidine energetic eutectic

Thermal behavior and microstructure of a Methylnitroguanidine‐Nitroguanidine energetic eutectic

Acoustical properties of molecular interactions in 1-propanol, 1-butanol and 1-pentanol with tetrahydrofuran in cyclohexanone at various temperatures

Solid–Liquid Phase Equilibria, Molecular Interaction and Microstructural Studies on (N-(2-ethanol)-p-nitroaniline + N-(2-acetoxyethyl)-p-nitroaniline) Binary Mixtures

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