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Influence of xylene concentration and temperature on the intrinsic parameters of PVC in cyclohexanone-xylene blends

✍ Scribed by Gupta, Kartick; Yaseen, M.

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
205 KB
Volume
46
Category
Article
ISSN
0959-8103

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✦ Synopsis

The intrinsic viscosity [g] and HugginsÏ constant k@ of PVC have been derived using Γ‘ow data obtained from dilute solution in cyclohexanone and in its blends with xylene at temperatures ranging from 10 to 50Β‘C. PolymerÈsolvent interaction parameters, and are obtained from intrinsic viscosityÈ K e M K b Mb temperature relationships suggested by Fort et al. (Fort, R. J., Hutchinson, R. J., Moore, W. R. & Murphy, M., Polymer, 4 (1963) 35). The intrinsic parameters are used to estimate the dissolution characteristics of PVC in cyclohexanone and in its blends with xylene. It is found that at ambient temperature a blend of 1 : 1 cyclohexanone : xylene is a better solvent for PVC than cyclohexanone alone. (

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