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Quantification of Triple‐Shape Memory Behavior of Polymers Utilizing Tension and Torsion
Author(s) -
Meurer Josefine,
Rodriguez Agudo José Alberto,
Zechel Stefan,
Hager Martin D.,
Schubert Ulrich S.
Publication year - 2021
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.202000462
Subject(s) - shape memory polymer , torsion (gastropod) , memorization , shape memory alloy , computer science , rheology , smart material , materials science , range (aeronautics) , work (physics) , binary number , mechanics , biological system , topology (electrical circuits) , algorithm , artificial intelligence , mechanical engineering , mathematics , nanotechnology , composite material , physics , engineering , arithmetic , medicine , mathematics education , surgery , combinatorics , biology
Abstract Shape‐memory polymers (SMPs) are well investigated smart materials. With their ability to memorize their original shape they are interesting candidates for a large range of applications. Certain SMPs feature triple shape‐memory behavior. In these cases, it is possible to fix two different temporary shapes. However, the exact quantification of the individual steps regarding their programming and recovery rate is difficult and has not been possible so far. In this work, a novel approach for the analysis and exact quantification of triple SMPs is presented. By applying a customized rheology protocol, it is possible to perform and to analyze torsional and tensional experiments simultaneously. Consequently, different shapes in different directions (vertical and horizontal) can be fixed and the individual steps can be investigated independently at different switching temperatures.