Interaction parameters and the equilibrium cationic polymerization of tetrahydrofuran in benzene
- 1 January 1986
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
- Vol. 82 (3) , 899-908
- https://doi.org/10.1039/f19868200899
Abstract
Flory–Huggins interaction parameters, χ12, have been determined for tetrahydrofuran–benzene, benzene–polytetrahydrofuran and tetrahydrofuran–polytetrahydrofuran mixtures from static vapour-pressure measurements. Values of χ lie between –0.18 to –0.23 for the first system in the temperature range 10.0–35.0 °C. The second and third systems were investigated at 35.0 °C and χ values vary from 0.15 to 0.32, and 0.11 to 0.19, respectively, as the polymer volume fraction varies from 0.32 to 0.12. The results have been applied to the available data for the cationic equilibrium polymerization of tetrahydrofuran in benzene and have been used for the computation of the free energy of polymerization, ΔG1c. The need for a ternary interaction parameter of the type χmsp for the ΔG1c expression is discussed.Keywords
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