Determination of Hansen solubility parameters of refined sugarcane wax

Hernández, E. R. de; Ríos, Manuel Díaz de los

doi:10.1007/s11696-021-01717-5

Cited by 6 publications

(8 citation statements)

References 7 publications

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“…The temperature effect and other thermodynamic considerations explain why ethanol at low temperature is a good solvent for the wax–oil fraction 16 and is considered a bad solvent for the wax fraction evaluated at 25 °C. 23 On increasing the temperature, it becomes a good solvent.…”

Section: Resultsmentioning

confidence: 99%

“…For an evaluation of the factors that affect the solubility of sugarcane wax and its components in ethanol, it is necessary to consider HSPs and the influence of temperature on them. Hansen’s solubility parameters theory is explained in the literature and several authors mentioned above ,− have detailed its application. Solute–solvent miscibles are those that are close in a tridimensional space of HSPs.…”

Section: Methodsmentioning

confidence: 99%

“…However, a subsequent study, 23 where the HSPs of the purified sugarcane wax fraction were determined, concluded that ethanol is not a good solvent for it at 30 °C. The use of defatted wax (without oil fraction) in this study yielded a significantly lower value of the hydrogen bonding parameter (δ H ) of HSPs in refined wax, because compounds with high δ H values, such as some saturated fatty acids, among others, were extracted during the refining process.…”

Section: Introductionmentioning

confidence: 99%

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Obtaining a Fraction of Sugarcane Wax Rich in Policosanol by Using Ethanol as Solvent: Results Interpretation through Hansen’s Solubility Theory

et al. 2022

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Determination of the best condition for fractionation of degreased sugarcane wax for policosanol production using ethanol was investigated in this paper. The optimal conditions related to the dispersion time of wax in the solvent, ethanol degree, and solvent/wax ratio were 30 min, 90.03% v/v, and 14:1 v/w, respectively. The results were evaluated by measuring six response variables: higher fatty alcohol concentration, octacosanol concentration, impurity concentration (measured as α,β unsaturated aldehydes), yield, cost indicator, and the ratio of octacosanol vs other higher fatty alcohols (C30 + C32 + C34). Optimal extraction conditions were determined with the desirability function. The complexity of separation of the higher alcohols fraction from impurities, mainly α,β unsaturated aldehydes, is explained with the aid of Hansen’s solubility parameters theory and its variation with temperature.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Obtaining a Fraction of Sugarcane Wax Rich in Policosanol by Using Ethanol as Solvent: Results Interpretation through Hansen’s Solubility Theory

et al. 2022

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“…It was reported that the HSPs could be used to characterize the compatibility between additives and asphalts, and the smaller solubility parameter distance ( H ) indicated better compatibility. , The detailed experiment procedure and calculation methods of the HSP and solubility parameter distance between the additives and asphalts can be seen in references − , and the results are shown in Tables S1 and S2 of the Supporting Information. According to the calculation results, the H values of commercial wax-based warm mix additives are significantly higher than those of unmodified and modified natural waxes, and the chemical modification of natural waxes reduces H values and thus increases compatibility between wax and asphalt.…”

Section: Resultsmentioning

confidence: 99%

Chemical Modification of Waxes to Improve the Compatibility with Asphalt Binders

Zhang

Ding

et al. 2022

ACS Sustainable Chem. Eng.

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Existing wax-based warm mix additives have poor compatibility with asphalt binders, which results in premature wax precipitation and cracking of the asphalt pavement. However, there are few studies on improving the compatibility between the waxes and asphalt. In this study, the wax precipitation temperature (WPT) was recommended as a new suitable evaluation index of the compatibility according to the consistency of changing laws between the solubility parameter distance deduced from Hansen solubility parameter (HSP) experiments and WPT, and a new component of wax-based warm mix additives with better compatibility was also introduced by maleation of the natural waxes. On this basis, the low-temperature cracking resistance of maleated natural waxes was systematically compared with that of unmodified natural waxes and commercial wax-based warm mix additives through dynamic mechanical analysis (DMA), extended bending beam rheometer (Ex-BBR), and double edge notched tension (DENT) tests. The results show that the reactant temperature has the greatest influence on the grafting effect, and the maleated natural waxes with better compatibility can reduce the viscosity, WPT, physical hardening rate, and grade loss and also improve the ductile resistance compared with the unmodified natural waxes and commercial wax-based warm mix additives. The maleation of waxes is a promising method for improving the compatibility of the waxes and asphalt.

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“…1. To determine the HSP of the wax, solubility parameters for the most abundant lipophilic compounds as determined through GC were collected [12]. The relative abundance of each compound was used to determine a weighted average for each of the Hansen parameters to represent the wax.…”

Section: Solubility Predictionsmentioning

confidence: 99%

Development of a solvent screening methodology for cannabinoid recovery from a wax by-product via recrystallization

Duminy

Goosen

Pott

et al. 2023

Biomass Conv. Bioref.

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Wax by-products from commercial Cannabis processing, containing between 41 and 46% (w/w) cannabinoids, are currently underutilized due to lack of research done, and significant value can be added through recovery of the cannabinoids. The cannabinoids are aimed to be recovered via a novel solvent-assisted recrystallization technology, and this study provides a robust solvent screening methodology for recovery of the cannabinoids for this technology. Solvents were screened based on their relative polarity, boiling point temperature, and safety of use. Further criteria such as reactivity toward wax compounds were implemented through evaluation of the Kamlet-Taft parameters of potential solvents. Solubility predictions of the wax in different solvents were done using the Hansen solubility parameters (HSP). The methodology was tested on a set of 73 commonly used solvents identifying five suitable solvents, which were 1,2-dimethoxyethane, 3-pentanone, ethyl acetate, methyl acetate, and methyl tert-butyl ether. The identified solvents were tested for use in recrystallization and were found to be suitable, validating the use of the developed methodology. Graphical Abstract

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Determination of Hansen solubility parameters of refined sugarcane wax

Cited by 6 publications

References 7 publications

Obtaining a Fraction of Sugarcane Wax Rich in Policosanol by Using Ethanol as Solvent: Results Interpretation through Hansen’s Solubility Theory

Obtaining a Fraction of Sugarcane Wax Rich in Policosanol by Using Ethanol as Solvent: Results Interpretation through Hansen’s Solubility Theory

Chemical Modification of Waxes to Improve the Compatibility with Asphalt Binders

Development of a solvent screening methodology for cannabinoid recovery from a wax by-product via recrystallization

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