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Cohesive energy density of polytetrahydrofuran
Author(s) -
Huglin M. B.,
Pass D. J.
Publication year - 1968
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1968.070120308
Subject(s) - swelling , hildebrand solubility parameter , materials science , solubility , polymer chemistry , thermodynamics , polymer , chemistry , composite material , physics
Measurements have been conducted on radiation‐crosslinked polytetrahydrofuran (PTHF) of stress‐strain and of swelling coefficients in simple esters. For the linear polymer, measurements have been made of density and intrinsic viscosities in the esters. [η] was also determined under the θ conditions of 33.5°C. in diethyl malonate. The results have been incorporated into several (sometimes interdependent) approaches towards the evaluation of the solubility parameter δ p of PTHF. The mean of the nine values obtained is 8.55 (cal./cc.) 1/2 , whence the cohesive energy density is 5.17 kcal./mole. Seventeen experimental values of the Flory interaction parameter χ are also reported.