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Copolyester studies. II. Melting and crystallization behavior of tetramethylene terephthalate–tetramethylene sebacate copolymers
Author(s) -
Marrs W.,
Peters R. H.,
Still R. H.
Publication year - 1979
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.1979.070230413
Subject(s) - crystallization , copolymer , differential scanning calorimetry , materials science , polymer chemistry , copolyester , melting point , recrystallization (geology) , melting temperature , chemical engineering , thermodynamics , polymer , composite material , polyester , paleontology , physics , biology , engineering
The melting and crystallization behavior of poly(tetramethylene terephthalate) and its copolymers with tetramethylene sebacate (≯ 20 mol %) has been studied using differential scanning calorimetry (DSC). The effect of the sebacate concentration on equilibrium melting temperature and crystallization behavior is discussed in terms of the theory of equilibrium crystallization of random copolymers. The multiple‐melting behavior of these systems is described and interpreted in terms of the theory of equilibrium melting of chain‐folded crystals, together with molecular fractionation during crystallization and melting and recrystallization during the DSC scan.