ISSN:
0887-6266
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Sorption and diffusion of methane and 1-butene in poly(vinyl chloride) (PVC) powder have been investigated by the step-response method using gas chromatography. The sorption equilibrium constant of 1-butene was lower than that of chlorine, despite the higher critical temperature of 1-butene, while the sorption of methane was negligibly small at temperatures much higher than critical. The diffusivity of 1-butene in PVC showed a discontinuous dependence on temperature at the glass transition point, suggesting that the micro-Brownian motion of the polymer chain enhances the diffusivity at the higher temperature. Below the glass transition temperature, the diffusivity of 1-butene in PVC showed a lower value than has been measured for other smaller molecules such as chlorine and hydrogen chloride.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/polb.1991.090290904
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