scholarly journals Phase equilibrium and diffusion of solvents in polybutadiene: A capillary-column inverse gas chromatography study

2002 ◽  
Vol 40 (10) ◽  
pp. 1046-1055 ◽  
Author(s):  
W. D. Cai ◽  
N. Ramesh ◽  
F. Tihminlioglu ◽  
R. P. Danner ◽  
J. L. Duda ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Phase Equilibrium ◽  
Inverse Gas Chromatography ◽  
Capillary Column ◽  
And Diffusion

Infinite Dilute Activity and Diffusion Coefficients in Polymers by Inverse Gas Chromatography

2006 ◽  
Vol 51 (1) ◽  
pp. 93-98 ◽  
Author(s):  
Chuyi Zeng ◽  
Jiding Li ◽  
Ding Wang ◽  
Tianquan Chen ◽  
Changwei Zhao ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Diffusion Coefficients ◽  
Inverse Gas Chromatography ◽  
And Diffusion

Diffusion of Solvents in Polybutadiene Rubber Using Capillary Column Inverse Gas Chromatography

1996 ◽  
Vol 69 (2) ◽  
pp. 234-244 ◽  
Author(s):  
Niloufar Faridi ◽  
J. L. Duda ◽  
Ronald P. Danner
Keyword(s):  
Gas Chromatography ◽  
Low Temperatures ◽  
Partition Coefficients ◽  
Infinite Dilution ◽  
Inverse Gas Chromatography ◽  
Capillary Column ◽  
Volume Diffusion ◽  
Linear Portion ◽  
Absorption Isotherm ◽  
Polybutadiene Rubber

Abstract The capillary column inverse gas chromatography (CCIGC) method at infinite dilution of solvent was used to measure the diffusion and partition coefficients of cyclohexane, toluene, n-heptane, chloroform and methyl ethyl ketone in polybutadiene (BR, 95% cis). Experiments were performed over a temperature range of 0 to 70°C. Chromatographic data analysis was carried out in terms of the elution model described by Pawlisch and coworkers. Attempts to conduct experiments at temperatures below 0°C yielded erroneous results. At these low temperatures the high activity of the solvent causes the system to be far from the linear portion of the absorption isotherm or in some cases results in condensation in the capillary column. The Vrentas-Duda free-volume diffusion model was used to interpret and correlate the diffusion data obtained at infinite dilution of the solvent.

Sign in / Sign up

Export Citation Format

Share Document