The influence of probe concentration on the determination of tg in polymers by inverse gas chromatography

2007 ◽  
Vol 68 (1) ◽  
pp. 229-237 ◽  
Author(s):  
M. A. Llorente ◽  
C. Menduiña ◽  
A. Horta
Keyword(s):  
Gas Chromatography ◽  
Inverse Gas Chromatography ◽  
Probe Concentration

Determination of the Polar and Total Surface Energy Distributions of Particulates by Inverse Gas Chromatography

Langmuir ◽  
2011 ◽  
Vol 27 (2) ◽  
pp. 521-523 ◽  
Author(s):  
Shyamal C. Das ◽  
Ian Larson ◽  
David A. V. Morton ◽  
Peter J. Stewart
Keyword(s):  
Gas Chromatography ◽  
Surface Energy ◽  
Inverse Gas Chromatography ◽  
Total Surface Energy ◽  
Energy Distributions

Determination of surface heterogeneity of d-mannitol by sessile drop contact angle and finite concentration inverse gas chromatography

2010 ◽  
Vol 387 (1-2) ◽  
pp. 79-86 ◽  
Author(s):  
Raimundo Ho ◽  
Steven J. Hinder ◽  
John F. Watts ◽  
Sarah E. Dilworth ◽  
Daryl R. Williams ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Contact Angle ◽  
Inverse Gas Chromatography ◽  
Sessile Drop ◽  
Surface Heterogeneity ◽  
Finite Concentration

scholarly journals Determination of some thermodynamical interaction parameters of polycaprolactone with some solvents by inverse gas chromatography

2002 ◽  
Vol 51 (11) ◽  
pp. 1285-1289 ◽  
Author(s):  
Ayfer Saraç ◽  
Ahmet Türe ◽  
Özlem Cankurtaran ◽  
Ferdane Yılmaz
Keyword(s):  
Gas Chromatography ◽  
Inverse Gas Chromatography ◽  
Interaction Parameters

Filler-Elastomer Interactions. Part VI. Characterization of Carbon Blacks by Inverse Gas Chromatography at Finite Concentration

1992 ◽  
Vol 65 (5) ◽  
pp. 890-907 ◽  
Author(s):  
Meng-Jiao Wang ◽  
Siegfried Wolff
Keyword(s):  
Gas Chromatography ◽  
Energy Distribution ◽  
Inverse Gas Chromatography ◽  
General Trend ◽  
High Energy ◽  
Carbon Blacks ◽  
Finite Concentration ◽  
Good Agreement

Abstract Carbon blacks ranging from N110 to N990 were characterized by means of inverse gas chromatography at finite concentration. The isotherms, net heat, and spreading pressures for benzene and cyclohexane adsorption suggest a general trend of increasing surface activity with increases in specific surface area. This is in good agreement with surface-energy measurements reported previously. The energy-distribution function of adsorption shows that while the concentrations of low-energy sites are comparable for most of the carbon blacks, differences exist with regard to high-energy sites. These suggest that small-particle-size blacks possess a greater number of high-energy centers. The graphitization of carbon blacks results in a considerable reduction in their adsorption capacity and narrows the energy distribution of their surfaces. One can therefore conclude that high-energy sites play an important role in the determination of the surface energies and reinforcing ability of carbon blacks.

scholarly journals Determination of the surface properties of kaolinite by inverse gas chromatography

2018 ◽  
Vol 2017 (2) ◽  
pp. 319-328 ◽  
Author(s):  
Ceyda Bilgiç
Keyword(s):  
Gas Chromatography ◽  
Free Energy ◽  
Inverse Gas Chromatography ◽  
Specific Enthalpy ◽  
Free Energy Of Adsorption ◽  
Dispersive Component ◽  
Enthalpy Of Adsorption ◽  
Kaolinite Surface ◽  
Acceptor Numbers

Abstract Inverse gas chromatography (IGC) was applied to characterize the surface of kaolinite. The adsorption thermodynamic parameters (the standard enthalpy (∆H0), entropy (∆S0) and free energy of adsorption (∆G0), the dispersive component of the surface energy (γsd), and the acid/base character of kaolinite surface were estimated by using the retention time of different non-polar and polar probes at infinite dilution region. The specific free energy of adsorption (∆Gsp), the specific enthalpy of adsorption (∆Hsp), and the specific entropy of adsorption (∆Ssp) of polar probes on kaolinite were determined. (∆Gsp) values were correlated with the donor and modified acceptor numbers of the probes to quantify the acidic (KA) and the basic (KD) parameters of the kaolinite surface. The values obtained for the parameters KA and KD indicated a basic character for kaolinite surface.

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