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Study of Kinetics of Poly (vinyl chloride) Swelling in Cyclohexanone

L. Lapčík, J. Očadlík, and V. Kellö

Department of Physical Chemistry, Slovak Technical University, Bratislava 1

 

Abstract:  Kinetics of swelling of non-fractionated poly(vinyl chloride) in cyclohexanone has been studied on two samples of emulsion type of PVC over the temperature range 20—60°C. Values of average integral diffusion coefficients of cyclohexanone in PVC calculated from experimental data have been stated. The following average values of activation energies of the diffusion process of swelling for the referred to temperature range have been found: 7 kcal mole-1 (Lonza G) and 6 kcal mole-1 (Geon 121), respectively. The observed anomalous course of kinetic curves is discussed. The stepwise effect is accounted for by permeation heterogeneity as a consequence of a vigorous polymer—solvent interaction.

Full paper in Portable Document Format: 261a18.pdf

 

Chemical Papers 26 (1) 18–26 (1972)

Thursday, June 20, 2024

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