Determination of the Hansen solubility parameters of carbon nano-onions and prediction of their dispersibility in organic solvents

2019 ◽  
Vol 294 ◽  
pp. 111646 ◽  
Author(s):  
Julio C. Zuaznabar-Gardona ◽  
Alex Fragoso
Keyword(s):  
Organic Solvents ◽  
Solubility Parameters ◽  
Hansen Solubility Parameters ◽  
Hansen Solubility

scholarly journals Solubilization of Trans-Resveratrol in Some Mono-Solvents and Various Propylene Glycol + Water Mixtures

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3091
Author(s):  
Mohammed Ghazwani ◽  
Prawez Alam ◽  
Mohammed H. Alqarni ◽  
Hasan S. Yusufoglu ◽  
Faiyaz Shakeel
Keyword(s):  
Propylene Glycol ◽  
Mole Fraction ◽  
Bioactive Compound ◽  
Theoretical Models ◽  
Solubility Parameters ◽  
Hansen Solubility Parameters ◽  
Neat Water ◽  
Dissolution Properties ◽  
Hansen Solubility

This research deals with the determination of solubility, Hansen solubility parameters, dissolution properties, enthalpy–entropy compensation, and computational modeling of a naturally-derived bioactive compound trans-resveratrol (TRV) in water, methanol, ethanol, n-propanol, n-butanol, propylene glycol (PG), and various PG + water mixtures. The solubility of TRV in six different mono-solvents and various PG + water mixtures was determined at 298.2–318.2 K and 0.1 MPa. The measured experimental solubility values of TRV were regressed using six different computational/theoretical models, including van’t Hoff, Apelblat, Buchowski–Ksiazczak λh, Yalkowsly–Roseman, Jouyban–Acree, and van’t Hoff–Jouyban–Acree models, with average uncertainties of less than 3.0%. The maxima of TRV solubility in mole fraction was obtained in neat PG (2.62 × 10−2) at 318.2 K. However, the minima of TRV solubility in the mole fraction was recorded in neat water (3.12 × 10−6) at 298.2 K. Thermodynamic calculation of TRV dissolution properties suggested an endothermic and entropy-driven dissolution of TRV in all studied mono-solvents and various PG + water mixtures. Solvation behavior evaluation indicated an enthalpy-driven mechanism as the main mechanism for TRV solvation. Based on these data and observations, PG has been chosen as the best mono-solvent for TRV solubilization.

Towards a Framework for Evaluating and Reporting Hansen Solubility Parameters: Applications to Nano and Micron Scale Particle Dispersions

2021 ◽  
Author(s):  
Shalmali Bapat ◽  
Stefan O. Kilian ◽  
Hartmut Wiggers ◽  
Doris Segets
Keyword(s):  
Continuous Phase ◽  
Solubility Parameters ◽  
Hansen Solubility Parameters ◽  
Ranking List ◽  
Knowledge Based ◽  
Complex Interactions ◽  
Analytical Centrifugation ◽  
Scale Particle ◽  
Hansen Solubility

<p>A thorough understanding of complex interactions within particulate systems is a key for knowledge-based formulations. Hansen solubility parameters (HSP) are widely used to assess the compatibility of the dispersed phase with the continuous phase. At present, the determination of HSP is often based on a liquid ranking list obtained by evaluating a pertinent dispersion parameter using only one pre-selected characterization method. Furthermore, one cannot rule out the possibility of subjective judgment especially for liquids for which it is difficult to decipher the compatibility or underlying interactions. As a result, the end value of HSP might be of little or no information. To overcome these issues, we introduce a generalized technology-agnostic combinatorics-based approach. We discuss the principles of the approach and the implications of evaluating and reporting particle HSP values. We demonstrate the approach by using SiN<sub>x</sub> particles. We leverage the analytical centrifugation data to evaluate stability trajectories of SiN<sub>x</sub> dispersions in various liquids to deduce particle-liquid compatibility. </p>

Solubility of Oxygen in Organic Solvents and Calculation of the Hansen Solubility Parameters of Oxygen

2014 ◽  
Vol 53 (49) ◽  
pp. 19331-19337 ◽  
Author(s):  
Takashi Sato ◽  
Yuzo Hamada ◽  
Masaru Sumikawa ◽  
Sadao Araki ◽  
Hideki Yamamoto
Keyword(s):  
Organic Solvents ◽  
Solubility Parameters ◽  
Hansen Solubility Parameters ◽  
Solubility Of Oxygen ◽  
Hansen Solubility

Determination of Hansen Solubility Parameters of an Algerian Asphaltene and its Sub-Fractions

2020 ◽  
Vol 60 (9) ◽  
pp. 1026-1032
Author(s):  
M. Djabeur ◽  
Y. Bouhadda ◽  
T. Fergoug ◽  
A. C. Djendara ◽  
A. Hamimed
Keyword(s):  
Solubility Parameters ◽  
Hansen Solubility Parameters ◽  
Hansen Solubility

scholarly journals Solvent Effects on Gelation Behavior of the Organogelator Based on L-Phenylalanine Dihydrazide Derivatives

Materials ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 1890 ◽  
Author(s):  
Yang Yu ◽  
Ning Chu ◽  
Qiaode Pan ◽  
Miaomiao Zhou ◽  
Sheng Qiao ◽  
...  
Keyword(s):  
Organic Solvents ◽  
Self Assembly ◽  
Solubility Parameters ◽  
Ordered Structure ◽  
Hansen Solubility Parameters ◽  
Nmr Studies ◽  
Low Concentrations ◽  
Gelation Behavior ◽  
Hoff Equation ◽  
Hansen Solubility

A series of organogelators based on L-phenylalanine has been synthesized and their gelation properties in various organic solvents were investigated. The results showed that these organogelators were capable of forming stable thermal and reversible organogels in various organic solvents at low concentrations, and the critical gel concentration (CGC) of certain solvents was less than 1.0 wt%. Afterward, the corresponding enthalpies (ΔHg) were extracted by using the van ’t Hoff equation, as the gel–sol temperature (TGS) was the function of the gelator concentration. The study of gelling behaviors suggested that L-phenylalanine dihydrazide derivatives were excellent gelators in solvents, especially BOC–Phe–OdHz (compound 4). The effects of the solvent on the self-assembly of gelators were analyzed by the Kamlet–Taft model, and the gelation ability of compound 4 in a certain organic solvent was described by Hansen solubility parameters and a Teas plot. Morphological investigation proved that the L-phenylalanine dihydrazide derivatives could assemble themselves into an ordered structure such as a fiber or sheet. Fourier-transform infrared spectroscopy (FTIR) and hydrogen nuclear magnetic resonance (1H NMR) studies indicated that hydrogen bonding, π–π stacking, and van der Waals forces played important roles in the formation of a gel.

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