Determination of the diffusion coefficients of organic solvents in polyepichlorohydrin: A comparative study of inverse gas chromatography and sorption methods

2003 ◽  
Vol 89 (8) ◽  
pp. 2216-2223 ◽  
Author(s):  
C. Etxabarren ◽  
M. Iriarte ◽  
A. Etxeberria ◽  
C. Uriarte ◽  
J. J. Iruin
Keyword(s):  
Gas Chromatography ◽  
Comparative Study ◽  
Organic Solvents ◽  
Diffusion Coefficients ◽  
Inverse Gas Chromatography

Infinite dilution diffusion coefficients of organic solvents in nascent polyethylene particles by inverse gas chromatography measurements

e-Polymers ◽  
2007 ◽  
Vol 7 (1) ◽  
Author(s):  
Xiaowei Yan ◽  
Jingdai Wang ◽  
Yibin Shan ◽  
Yongrong Yang ◽  
Chao He
Keyword(s):  
Gas Chromatography ◽  
Organic Solvents ◽  
Diffusion Coefficients ◽  
Infinite Dilution ◽  
Inverse Gas Chromatography ◽  
Particle Morphology ◽  
Spherical Particles ◽  
Reactor Outlet ◽  
Free Volume Theory ◽  
Polyethylene Particles

AbstractDiffusion coefficients of four organic solvents: dichloromethane, trichloromethane, tetrachloromethane and n-hexane in polyethylene particles at infinite dilution were determined by use of inverse gas chromatography (IGC). The polymer particles were used as supplied by the producer to pack the chromatographic columns. This allowed a direct measurement of the interested properties in a particle with the same morphology obtained at the reactor outlet. The particle morphology was investigated and classical mathematical model for chromatographic process was adopted based upon the analysis of particle microstructure. It was found that the limitation step for mass transfer was in the polymer matrix rather than in macropores, and when interpreted in terms of diffusion coefficients for spherical particles, the measured diffusion coefficients compared favourably with predicted values from literature relationships and free volume theory.

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 precise and reliable gas diffusion coefficients by gas chromatography

1976 ◽  
Vol 98 (17) ◽  
pp. 5101-5107 ◽  
Author(s):  
Frank Yang ◽  
Stephen Hawkes ◽  
F. T. Lindstrom
Keyword(s):  
Gas Chromatography ◽  
Diffusion Coefficients ◽  
Gas Diffusion
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