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Influence of xylene concentration and temperature on the intrinsic parameters of PVC in cyclohexanone–xylene blends
Author(s) -
Gupta Kartick,
Yaseen M.
Publication year - 1998
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/(sici)1097-0126(199808)46:4<303::aid-pi20>3.0.co;2-#
Subject(s) - cyclohexanone , xylene , materials science , p xylene , thermodynamics , polymer chemistry , chemical engineering , composite material , chemistry , benzene , organic chemistry , toluene , catalysis , physics , engineering
The intrinsic viscosity [η] and Huggins’ constant k ′ of PVC have been derived using flow data obtained from dilute solution in cyclohexanone and in its blends with xylene at temperatures ranging from 10 to 50°C. Polymer–solvent interaction parameters, K e M and K β M β are obtained from intrinsic viscosity–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. © 1998 SCI