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Polymorphic Superelasticity in Semicrystalline Polymers
Author(s) -
Auriemma Finizia,
De Rosa Claudio,
Esposito Simona,
Mitchell Geoffrey R.
Publication year - 2007
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200605021
Subject(s) - pseudoelasticity , crystallinity , materials science , phase transition , polymer , crystallography , phase (matter) , ductility (earth science) , martensite , thermodynamics , composite material , chemistry , organic chemistry , physics , creep , microstructure
Under stress : A high level of crystallinity in polymers does not impair ductility and elastic performance if a stress‐induced martensitic crystal–crystal phase transition takes place (see picture; c: unit cell axis, h: helical form, t: trans ‐planar form). This type of elasticity is not merely entropic but also partly enthalpic, and therefore similar to the superelasticity of shape‐memory alloys.