Evaluation of the surface properties of 4-(Decyloxy) benzoic acid liquid crystal and its use in structural isomer separation

Işık, Birol; Çakar, Fatih; Cankurtaran, Özlem

doi:10.3906/kim-2101-13

Cited by 7 publications

(4 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The interaction between the shepherd's purse and organic solvents is determined by the retention time of the selected solvent. A net retention volume (𝑉 𝑁 ) is calculated by the following equation (29,30):…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Surface Physicochemical Characterization of Shepherd’s Purse (Capsella bursa-pastoris) by Inverse Gas Chromatography

ISİK

2023

Journal of the Turkish Chemical Society Section A: Chemistry

Self Cite

View full text Add to dashboard Cite

Shepherd’s purse (Capsella bursa-pastoris) is one of the plants widely utilized in conventional medicine and can grow in different parts of the world. The determination of the surface properties of a solid material is extremely important for the industrial use of the material and the improvement of material properties. Therefore, in this study, this plant was used as a stationary phase, and its surface characterization was performed by inverse gas chromatography technique. In this context, firstly, the plant was prepared with several pretreatments to be used in the experimental tests. The V_N values were found from the retention data obtained by passing organic solvents over the plant filled into the chromatographic column in the temperature range of 303.2–328.2 K and linear retention diagrams were drawn. The γ_S^D of the plant was calculated according to Schultz, Dorris-Gray, and Donnet-Park methods, and the suitability of the methods was compared. The 〖∆G〗_A^S values were calculated with the data obtained from the Schultz method, and the 〖∆H〗_A^S values were calculated using these data. The acidity and basicity of the plant surface were examined. According to the K_D⁄K_A value (0.93), it was determined that the surface of the plant was acidic.

show abstract

Section: Resultsmentioning

confidence: 99%

“…Table 2. The values of 𝑎 and 𝛾 𝐿 𝐷 for organic solvents (29). 𝐷 values were calculated according to equations ( 6) and ( 7), respectively, and illustrated in Table 3.…”

Section: ∆𝐺 [𝐶𝐻mentioning

confidence: 99%

Surface Physicochemical Characterization of Shepherd’s Purse (Capsella bursa-pastoris) by Inverse Gas Chromatography

ISİK

2023

Journal of the Turkish Chemical Society Section A: Chemistry

Self Cite

View full text Add to dashboard Cite

show abstract

“…The selectivity of the stationary phase in the chromatographic column can be easily determined by the selectivity coefficient or separation factor given by the following equation 40,43,44

α goodbreak= \frac{((), t_{R_{1}} goodbreak- t_{A})}{(t_{R_{2}} - t_{A})} goodbreak= \frac{V_{N_{1}}}{V_{N_{2}}}

Here,

α

represents the selectivity coefficient or separation factor;

t_{R_{1}}

and

t_{R_{2}}

represent the retention time of the first and second isomer from the isomer pairs, respectively;

t_{A}

represents the retention time of air; and

V_{N_{1}}

and

V_{N_{2}}

represent the net retention volume of the first and second isomer, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The selectivity of the stationary phase in the chromatographic column can be easily determined by the selectivity coefficient or separation factor given by the following equation. 40,43,44…”

Section: Separation Of Xylene Isomersmentioning

confidence: 99%

A comparative study of surface properties of Urtica dioica (nettle) leaves, roots, and seeds and examination of their ability to separate xylene isomers

Işık

Çakar

Cankurtaran

2022

Phytochemical Analysis

Self Cite

View full text Add to dashboard Cite

Introduction Urtica dioica (nettle) is a plant species of the Urticaceae family that grows in various parts of the world and exerts antioxidant, antibacterial, antiulcer, antiviral, and anti‐inflammatory effects. Their leaves, roots, and seeds are used in various fields such as food, medicine, and cosmetics. Objectives Inverse gas chromatography (IGC) was used to evaluate the surface characteristics and separation ability of U. dioica leaves, roots, and seeds. Characterization of these biomasses was performed by Fourier transform infrared spectroscopy (FTIR) analyses. Methodology The surface properties of the biomasses including dispersive surface energy, adsorption enthalpy, Gibbs free energy, and acidity‐basicity constants were determined at infinite dilution using various organic solvents. These properties were compared with each other. Dispersive surface energies were calculated using the Dorris–Gray, Donnet–Park, and Schultz methods. The accuracy of these methods and their applicability were evaluated. In the last stage of this study, the separation of xylene isomers was investigated by using U. dioica biomasses as stationary phases. Results The surface functional groups were determined by FTIR analysis. As a result of the IGC studies, it was found that the adsorption of polar solvents on biomasses occurred exothermically and spontaneously. Besides, it was found that the surfaces of biomasses were basic. From the retention diagrams and selectivity coefficients, it was determined that xylene isomers were effectively separated. Conclusion IGC is a promising, low‐cost, easy‐to‐apply, and high‐accuracy technique for the investigation of the surface properties of biomasses and their ability to separate isomers.

show abstract

Comparative physicochemical characterization of ULTEM/SWCNT nanocomposites: Surface, thermal and electrical conductivity analyses

et al. 2022

View full text Add to dashboard Cite

Evaluation of the surface properties of 4-(Decyloxy) benzoic acid liquid crystal and its use in structural isomer separation

Cited by 7 publications

References 41 publications

Surface Physicochemical Characterization of Shepherd’s Purse (Capsella bursa-pastoris) by Inverse Gas Chromatography

Surface Physicochemical Characterization of Shepherd’s Purse (Capsella bursa-pastoris) by Inverse Gas Chromatography

A comparative study of surface properties of Urtica dioica (nettle) leaves, roots, and seeds and examination of their ability to separate xylene isomers

Comparative physicochemical characterization of ULTEM/SWCNT nanocomposites: Surface, thermal and electrical conductivity analyses

Contact Info

Product

Resources

About