One-Way Multishape-Memory Effect and Tunable Two-Way Shape Memory Effect of Ionomer Poly(ethylene-co-methacrylic acid)

2016 ◽  
Vol 8 (23) ◽  
pp. 14812-14823 ◽  
Author(s):  
Lu Lu ◽  
Guoqiang Li
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Methacrylic Acid ◽  
Poly Ethylene

Poly(p-dioxanone)–poly(ethylene glycol) network: synthesis, characterization, and its shape memory effect

2012 ◽  
Vol 3 (9) ◽  
pp. 2508 ◽  
Author(s):  
Ying Niu ◽  
Pei Zhang ◽  
Jingjing Zhang ◽  
Liping Xiao ◽  
Keke Yang ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Network Synthesis ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

Benzoyl peroxide thermo-crosslinked poly(ethylene-co-vinyl acetate) foam with two-way shape memory effect

2020 ◽  
Vol 264 ◽  
pp. 127343 ◽  
Author(s):  
Jin Hui ◽  
Hong Xia ◽  
Yaqin Fu ◽  
Yiping Qiu ◽  
Qing-Qing Ni
Keyword(s):  
Shape Memory ◽  
Benzoyl Peroxide ◽  
Shape Memory Effect ◽  
Vinyl Acetate ◽  
Memory Effect ◽  
Poly Ethylene

Triple-shape memory effect in poly (ethylene terephthalate) (PET) film

2018 ◽  
Vol 47 (1) ◽  
pp. 55-62 ◽  
Author(s):  
Xue Lian Wu ◽  
Chuan Peng Yang ◽  
Yu Qin Guo ◽  
Hong Yu Wang
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Ethylene Terephthalate ◽  
Content Type ◽  
Poly Ethylene Terephthalate ◽  
The Difference ◽  
Triple Shape Memory ◽  
Poly Ethylene ◽  
Pet Film

Purpose This paper aims to focus on achieving triple-shape memory effect (triple-SME) of a commercial poly (ethylene terephthalate) (PET) film with the thickness of 100 µm. Design/methodology/approach The thermal characteristics and microstructure of PET film were characterized by differential scanning calorimetry, thermogravimetric analysis and wide-angle X-ray diffraction analysis. The dual-shape memory effect (dual-SME) of the PET film was then systematically investigated, and based on that, triple-SME in thin PET film was achieved. Findings Investigation of the dual-SME in PET film revealed the difference between recovery temperature and programming temperature reduced with increasing programming temperature. An obvious intermediate shape shifting between the original and final programmed shape was observed during shape recovery in triple-shape memory behaviors. Research limitations/implications Compared with dual-SME in polymer, relatively less work has been done on multi-SME in polymer, especially in thin polymer film. In this study, triple-SME in a PET film was investigated based on the results of dual-SME of the film. The main implication of the study is on how to achieve a watermark between the final programmed pattern and the original pattern, for the application of shape memory polymer in anti-counterfeiting label. Originality/value Dual- and triple-SMEs were achieved in a PET film that is only 100 µm in thickness, and the underlying mechanism for the difference between programming temperature and recovery temperature was discussed. For the novel application of triple-SME in anti-counterfeit label, the watermark during shape recovery in triple-SME can effectively prevent duplication.

Hydrogen-bonded polymer network—poly(ethylene glycol) complexes with shape memory effect

2002 ◽  
Vol 12 (10) ◽  
pp. 2957-2960 ◽  
Author(s):  
Yiping Cao ◽  
Ying Guan ◽  
Juan Du ◽  
Juan Luo ◽  
Yuxing Peng ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Polymer Network ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene ◽  
Hydrogen Bonded

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.

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