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Melting temperatures and polymer–solvent interaction for polycaprolactam
Author(s) -
Gechele G. B.,
Crescentini L.
Publication year - 1963
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.1963.070070415
Subject(s) - diluent , enthalpy of fusion , fusion , solvent , polymer , thermodynamics , melting point , mixing (physics) , materials science , polymer chemistry , chemistry , organic chemistry , composite material , physics , linguistics , philosophy , quantum mechanics
Melting points of four polycaprolactam samples of different molecular weight and their mixtures with various diluents were determined. Heats of fusion and polymer–diluent energy of mixing parameters were calculated according to the theory of Flory. The heats of fusion were found to be about 38 cal./g. The experimental results (independence from molecular weight above a certain value, and from the nature of terminal groups, etc.) agree with the theory. However, in a few cases of poor solvents anomalous behavior can be suspected.