Determination of thermodynamic and transport properties of a polystyrene-co-acrylonitrile copolymer by infinite and finite concentration IGC

Galdámez, J. Román; Kernion, Samuel J.; Danner, Ronald P.

doi:10.1016/j.polymer.2008.04.023

Cited by 10 publications

(7 citation statements)

References 10 publications

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“…IGC is useful in studying IL thermodynamic properties. IGC has been used since 1969 in characterizing inorganic materials, polymers, carbon blacks, and other materials. − IGC underwent several improvements and is now used in characterizing ILs and IL blends. − When a liquid solute (probe) is injected into the column, the probe vaporizes and interacts with stationary-phase ILs; thus, retention time can then be determined. This method is directly applicable in analyzing mixtures.…”

Section: Introductionmentioning

confidence: 99%

Determination of Infinite Dilution Activity Coefficients of Several Organic Solutes in N-Butylpyridinium Nitrate/N-Octylpyridinium Nitrate by Blend Inverse Gas Chromatography

et al. 2017

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The miscibility behavior of N-butylpyridinium nitrate/ N-octylpyridinium blends with different compositions was studied using the inverse gas chromatography (IGC) technique. Twenty-one solvents, including alkanes, cycloalkane, aromatic hydrocarbons, alcohols, ethyl ether, acetone, and esters, with different chemical properties were studied to evaluate the interaction between N-alkylpyridinium nitrates and solvents. The interaction parameters of different ionic liquids [ILs] have been calculated. Results were consistent with the activity coefficients at infinite dilution and weight fraction activity coefficient. In addition, the miscibility term ΔH 1 S was significantly different in each obtained IL blend. The solubility parameters of N-butylpyridinium nitrate/N-octylpyridinium blends were derived using the calculation δ 1 2 /(RT) − χ 12 ∞ /V 1 versus δ 1 of probes. The altered values of the solubility parameters were consistent with those of the studied ILs based on the methylimidazolium cation.

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Section: Introductionmentioning

confidence: 99%

Determination of Infinite Dilution Activity Coefficients of Several Organic Solutes in N-Butylpyridinium Nitrate/N-Octylpyridinium Nitrate by Blend Inverse Gas Chromatography

et al. 2017

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“…It has been shown that the selectivity of the CPC gas detectors was correlated with an exponential law to the inverse of the FH interaction parameter 22,25 . The physical properties of polymer matrixes and the analytes and the calculated FH interaction parameters based on Equation (3) are listed in Table 1 8,26,27 …”

Section: Resultsmentioning

confidence: 99%

“…The solubility parameter of SAN was reported equal to 18.64 (J.cm −3 ) 0.5 using of inverse gas chromatography (IGC) method at 130°C 27 . This value was converted to 30°C by following equations 29,30 :

{\overset{true~}{ρ}}_{i} ((), T) goodbreak= \frac{ρ_{i}}{ρ_{i}^{*}} goodbreak= \exp ((), goodbreak- α_{i} T),

δ_{i}^{2} ((), T) goodbreak= δ_{i}^{2} ((), 298) \frac{{\overset{true~}{ρ}}_{i} ((), T)}{{\overset{true~}{ρ}}_{i} ((), 298)},

where,

{\overset{true~}{ρ}}_{i} ((), T)

ρ_{i}

ρ_{i}^{*}

α_{i}

are reduced density, density, the hard‐core density, and the coefficient of thermal expansion for component i respectively.…”

Section: Resultsmentioning

confidence: 99%

Organic compound gas detector based on polylactic acid/poly (styrene‐co‐acrylonitrile)/multi‐walled carbon nanotube blend composite with co‐continuous microstructure

Molla-Abbasi

2021

Polymers for Advanced Techs

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A conductive polymer composite (CPC) based on polylactic acid (PLA)/poly (styrene‐co‐acrylonitrile) (SAN)/multi‐walled carbon nanotubes (MWNT) blend was prepared and used as a sensitive layer for detecting methanol, ethanol, toluene, and water vapor. The response behavior of polymer blend nanocomposite in comparison with PLA‐MWNT and SAN‐MWNT sensitive layers was studied as well as the influence of solution blending on the morphology, electrical behavior, and performance parameters of prepared sensitive layers. The scanning electron microscopy micrograph results showed that the PLA/SAN solution blended with a 50/50 wt% ratio had formed the co‐continuous morphology. In addition, the electrical conductivity investigation revealed that the percolation threshold of sensitive layers decreased from 1.5 vol%, related to PLA‐MWNT, to 0.8 vol%, related PLA/SAN blend nanocomposite. Thermodynamic investigation revealed that, in the solution blended conductive composites, MWNTs are preferentially localized in the PLA phase. The relative response (Rrel) of blended conductive composite, in comparison with PLA‐MWNT, was increased toward ethanol and toluene vapor while it was decreased against the methanol vapor. The sensitivity behavior of polymer blend composite was investigated based on the double percolated conductive network as well as the thermodynamic parameters such as Flory‐Huggins interaction parameter and solubility parameters.

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“…Galdamez et al [67] have determined polymer-solvent interactions, as well as partition and diffusion coefficients for various solutes in poly(styrene-co-acrylonitrile). For this, they used the results of thermodynamic investigations to determine the degree of compatibility between poly(styrene-co-acrylontrile), and found aromatic solvents to be the most suitable for the examined copolymer.…”

Section: Usefulness Of Igc: Applications Of Igc-derived Parameters Inmentioning

confidence: 99%

Inverse Gas Chromatography

Milczewska

Voelkel

2014

Characterization of Polymer Blends

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Determination of thermodynamic and transport properties of a polystyrene-co-acrylonitrile copolymer by infinite and finite concentration IGC

Cited by 10 publications

References 10 publications

Determination of Infinite Dilution Activity Coefficients of Several Organic Solutes in N-Butylpyridinium Nitrate/N-Octylpyridinium Nitrate by Blend Inverse Gas Chromatography

Determination of Infinite Dilution Activity Coefficients of Several Organic Solutes in N-Butylpyridinium Nitrate/N-Octylpyridinium Nitrate by Blend Inverse Gas Chromatography

Organic compound gas detector based on polylactic acid/poly (styrene‐co‐acrylonitrile)/multi‐walled carbon nanotube blend composite with co‐continuous microstructure

Inverse Gas Chromatography

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