Electrospinning-induced shape memory effect in thermoplastic polyurethane characterization and thermoviscoelastic modeling

2015 ◽  
Vol 53 (22) ◽  
pp. 1590-1602 ◽  
Author(s):  
Dimitry Alhazov ◽  
Charly Azra ◽  
Eyal Zussman
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Thermoplastic Polyurethane

scholarly journals Thermoresponsive Shape Memory Fibers for Compression Garments

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2989
Author(s):  
Robert Tonndorf ◽  
Dilbar Aibibu ◽  
Chokri Cherif
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Thermoplastic Polyurethane ◽  
Shape Memory Polymers ◽  
Strain Recovery ◽  
Recovery Stress ◽  
Compression Garments ◽  
Melt Spun ◽  
Shape Memory Fibers

Their highly deformable properties make shape memory polymers (SMP) a promising component for the development of new compression garments. The shape memory effect (SME) can be observed when two polymers are combined. In here, polycaprolactone (PCL) and thermoplastic polyurethane (TPU) were melt spun in different arrangement types (blend, core-sheath, and island-in-sea), whereas the best SME was observed for the blend type. In order to trigger the SME, this yarn was stimulated at a temperature of 50 °C. It showed a strain fixation of 62%, a strain recovery of 99%, and a recovery stress of 2.7 MPa.

Unraveling the impact of phase separation induced by thermal annealing on shape memory effect of polyester‐based thermoplastic polyurethane

2021 ◽  
pp. 51723
Author(s):  
Fernanda Cabrera Flores Valim ◽  
Gustavo Peixoto Oliveira ◽  
Gibran Vasconcelos ◽  
Lucilene Betega Paiva ◽  
Chiara Santillo ◽  
...  
Keyword(s):  
Phase Separation ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Thermal Annealing ◽  
Memory Effect ◽  
Thermoplastic Polyurethane ◽  
The Impact

Tensile Failure of 55-Nitinol Wire

1975 ◽  
Vol 33 ◽  
pp. 46-47
Author(s):  
F. I. Grace
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Stoichiometric Composition ◽  
Tensile Failure ◽  
Initial State ◽  
Initial Shape ◽  
Nitinol Wire ◽  
Cscl Type ◽  
Shear Transformation

An interest in NiTi alloys with near stoichiometric composition (55 NiTi) has intensified since they were found to exhibit a unique mechanical shape memory effect at the Naval Ordnance Laboratory some twelve years ago (thus refered to as NITINOL alloys). Since then, the microstructural mechanisms associated with the shape memory effect have been investigated and several interesting engineering applications have appeared.The shape memory effect implies that the alloy deformed from an initial shape will spontaneously return to that initial state upon heating. This behavior is reported to be related to a diffusionless shear transformation which takes place between similar but slightly different CsCl type structures.

A new type of intrinsic two-way shape-memory effect in hooks of NiTi-wires

2003 ◽  
Vol 112 ◽  
pp. 1177-1180 ◽  
Author(s):  
A. Schuster ◽  
H. F. Voggenreiter ◽  
D. C. Dunand ◽  
G. Eggeler
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
New Type ◽  
Niti Wires

Experimental study of the out-of-equilibrium behavior of the two-way shape memory effect

2003 ◽  
Vol 112 ◽  
pp. 765-768 ◽  
Author(s):  
Y. Bellouard ◽  
R. Clavel ◽  
R. Gotthardt ◽  
J. van Humbeeck
Keyword(s):  
Experimental Study ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Equilibrium Behavior
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