Gas Chromatographic Determination of Thermodynamic Properties of Polymer Solutions. II. Semicrystalline Polymer Systems

1973 ◽  
Vol 6 (2) ◽  
pp. 176-180 ◽  
Author(s):  
N. F. Brockmeier ◽  
R. W. McCoy ◽  
J. A. Meyer
Keyword(s):  
Thermodynamic Properties ◽  
Polymer Solutions ◽  
Chromatographic Determination ◽  
Semicrystalline Polymer ◽  
Polymer Systems

Gas chromatographic determination of thermodynamic properties of polymer solutions at high pressure

AIChE Journal ◽  
1973 ◽  
Vol 19 (6) ◽  
pp. 1133-1139 ◽  
Author(s):  
Norman F. Brockmeier ◽  
Ronald E. Carlson ◽  
Robert W. McCoy
Keyword(s):  
High Pressure ◽  
Thermodynamic Properties ◽  
Polymer Solutions ◽  
Chromatographic Determination

Gas Chromatographic Determination of Thermodynamic Properties of Polymer Solutions

1972 ◽  
Vol 5 (2) ◽  
pp. 130-132 ◽  
Author(s):  
N. F. Brockmeier ◽  
R. W. McCoy ◽  
J. A. Meyer
Keyword(s):  
Thermodynamic Properties ◽  
Polymer Solutions ◽  
Chromatographic Determination

Gas-Solid Chromatographic Determination of Vinylidene Chloride in Saran Film and Three Food-Simulating Solvents

1978 ◽  
Vol 61 (3) ◽  
pp. 537-544
Author(s):  
Henry C Hollifield ◽  
Timothy McNeal
Keyword(s):  
Mass Spectrometry ◽  
Electron Capture ◽  
Polymer Solutions ◽  
Corn Oil ◽  
Direct Injection ◽  
Chromatographic Determination ◽  
Electron Capture Detection ◽  
Vinylidene Chloride ◽  
Food Simulants

Abstract Gas-solid chromatographic (GSC) procedures are described for the analysis of Saran films for vinylidene chloride (VdC) and for determining the level of VdC migration from Saran film into 3 food-simulating solvents. The films are dissolved in tetrahydrofuran and analyzed for VdC by direct injection of the polymer solutions. VdC migration from Saran film to corn oil, heptane, and water is measured by headspace GSC. With electron capture detection and confirmation by GSC-mass spectrometry fragmentography, about 1 ppm VdC can be quantitated in the polymer and 5–10 ppb in the food simulants. Data for VdC migration from 2 commercial Saran films into the food simulants are presented to demonstrate the utility of the method.

Models of Thermodynamic Properties of Prominences

1979 ◽  
Vol 44 ◽  
pp. 349-355
Author(s):  
R.W. Milkey
Keyword(s):  
Thermodynamic Properties ◽  
Mass Transport ◽  
Emission Spectrum ◽  
Thermodynamic Parameters ◽  
Working Group ◽  
Physical Processes ◽  
Theoretical Concepts ◽  
Group 3 ◽  
Observational Techniques

The focus of discussion in Working Group 3 was on the Thermodynamic Properties as determined spectroscopically, including the observational techniques and the theoretical modeling of physical processes responsible for the emission spectrum. Recent advances in observational techniques and theoretical concepts make this discussion particularly timely. It is wise to remember that the determination of thermodynamic parameters is not an end in itself and that these are interesting chiefly for what they can tell us about the energetics and mass transport in prominences.

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