Determination of Solubility Parameters of New Suit Materials

2009 ◽  
pp. 209-209-10 ◽  
Author(s):  
AP Bentz ◽  
CB Billing
Keyword(s):  
Solubility Parameters

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.

Evaluation Of Filter Cake Oil As Antifoam In Yeast Production. New Use For This By-Product Of The Sugarcane Derivatives Industry

2021 ◽  
Author(s):  
Indira Pérez Bermúdez ◽  
Arletis Cruz Llerena ◽  
Keyla Tortoló Cabañas ◽  
Manuel Díaz de los Ríos ◽  
Miguel Ángel Peña ◽  
...  
Keyword(s):  
Fermentation Process ◽  
Filter Cake ◽  
Reducing Sugar ◽  
Production Costs ◽  
Solubility Parameters ◽  
Knock Down ◽  
Knockdown Effect ◽  
Fodder Yeast ◽  
Effective Product

Abstract Purpuse: Fodder yeast is obtained in an aerobic fermentation process where foaming is a major problem to be solved. In this article, the antifoam property of crude and purified filter cake oil is evaluated in order to use this residual as an alternative to replace the import of commercial antifoam agents and to reduce the production costs of fodder yeastMethod: Knock down test and the comparisons with two commercial antifoam agents were done. Blackstrap molasses medium at 20 and 40 g/L of total reducing sugar was used. All products were studied in their pure form and commercial ones also in dilutions 1:2 and 1:5 v/v. Hansen's solubility parameters (HSPs) to analyze the affinity of each defoamer for yeast were determined.Results: It was obtained the crude and purified filter cake oil showed similar behavior to commercial defoamers with an immediate antifoam effect, removing between 40 and 60% of the initial foam at both sugar concentrations in the first 5 minutes. The regression model showed purified filter cake oil has the greatest knockdown effect (Ca = 55.85 and 74.32) and with greater foam suppression stability the commercial defoamer Quimifoam Máster (Cb = -0.69 and -1.38). Ra values obtained in HSPs test, indicated the affinity of defoamers to the medium. Conclusion: Purified filter cake oil is an effective product for its use as an antifoam with the best knock down effect for both concentrations of sugars in the medium. The determination of HSPs corroborates the effectiveness of this product to suppress foam.

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>

Determination of Solubility Parameters for thep-Xylene Oxidation Products

2011 ◽  
Vol 50 (4) ◽  
pp. 2467-2472 ◽  
Author(s):  
Vishnu Malpani ◽  
Pralhad A. Ganeshpure ◽  
Pradip Munshi
Keyword(s):  
Oxidation Products ◽  
Solubility Parameters

Determination of Partial Solubility Parameters of Lactose by Gas-Solid Chromatography

1986 ◽  
Vol 75 (1) ◽  
pp. 68-72 ◽  
Author(s):  
Nguyen Huu Phuoc ◽  
Roger Phan Tan Luu ◽  
Alain Munafo ◽  
Paul Ruelle ◽  
Ho Nam-Tran ◽  
...  
Keyword(s):  
Solubility Parameters
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