Development of zwitterionic polyurethanes with multi-shape memory effects and self-healing properties

2015 ◽  
Vol 3 (6) ◽  
pp. 2924-2933 ◽  
Author(s):  
Shaojun Chen ◽  
Funian Mo ◽  
Yan Yang ◽  
Florian J. Stadler ◽  
Shiguo Chen ◽  
...  
Keyword(s):  
Shape Memory ◽  
Memory Effects ◽  
Hexamethylene Diisocyanate ◽  
Self Healing ◽  
Shape Memory Properties ◽  
Shape Memory Effects

Novel zwitterionic polyurethanes containing sulfobetaines, featuring excellent multi-shape-memory properties and self-healing properties, are prepared from N-methyldiethanolamine, hexamethylene diisocyanate and 1,3-propanesultone.

Study on Shape Memory Effects of LC Epoxy Resins with Lateral Substituents

2010 ◽  
Vol 428-429 ◽  
pp. 391-393 ◽  
Author(s):  
Li Yan Liang ◽  
De Wen Zhou ◽  
Man Geng Lu
Keyword(s):  
Shape Memory ◽  
Dynamic Mechanical Analysis ◽  
Epoxy Resins ◽  
Liquid Crystalline ◽  
Mechanical Analysis ◽  
Memory Effects ◽  
Ordered Structures ◽  
Alkyl Groups ◽  
Shape Memory Properties ◽  
Shape Memory Effects

A series of shape memorized liquid crystalline epoxides with different length of lateral substituents were prepared with several kinds of hardener. The dynamic mechanical analysis and the sharp memory properties of the resulted LC epoxy resins were studied by POM, WAXD, DSC and DMA. The results showed that the modulus in the rubbery region (ER) of the LC epoxides decreases as the length of lateral alkyl groups increases. And the shape memory properties were strongly impacted not only by the length of lateral substituents, but also by the kinds of hardener. The recovering speeds of the shape-memory liquid crystalline epoxides decrease as the increasing length of lateral alkyl groups. And recovering speeds of LC epoxides cured with aromatic amine (DDM) are faster than that of LC epoxides cured with anhydride (THHPA). The local ordered structures and the lateral substituents played an important role in shape memory effects.

scholarly journals Self-Healing and Shape Memory Effects in Gold Microparticles through the Defects-Mediated Diffusion

2017 ◽  
Vol 4 (8) ◽  
pp. 1700159 ◽  
Author(s):  
Oleg Kovalenko ◽  
Christian Brandl ◽  
Leonid Klinger ◽  
Eugen Rabkin
Keyword(s):  
Shape Memory ◽  
Memory Effects ◽  
Self Healing ◽  
Shape Memory Effects

Development of liquid crystalline polyurethane composites with stage-responsive shape memory effects

2018 ◽  
Vol 9 (5) ◽  
pp. 576-583 ◽  
Author(s):  
Shaojun Chen ◽  
Jianfeng Ban ◽  
Luona Mu ◽  
Haitao Zhuo
Keyword(s):  
Shape Memory ◽  
Polymer Composites ◽  
Liquid Crystalline ◽  
Shape Memory Polymer ◽  
Memory Effects ◽  
Shape Memory Properties ◽  
Shape Memory Effects ◽  
Polyurethane Composites

Novel liquid crystalline shape memory polymer composites with interesting staging-responsive shape memory properties were successfully prepared. The liquid crystalline shape memory polymer composites maintain the intrinsic reversible liquid crystalline properties of Azo11.

How Shape Memory Effects can Contribute to Improved Self-Healing Properties in Polymer Materials

2021 ◽  
Vol 54 (5) ◽  
pp. 2506-2517
Author(s):  
Elizaveta V. Selezneva ◽  
Artem V. Bakirov ◽  
Nikita G. Sedush ◽  
Aleksandra V. Bystrova ◽  
Sergei N. Chvalun ◽  
...  
Keyword(s):  
Shape Memory ◽  
Memory Effects ◽  
Polymer Materials ◽  
Self Healing ◽  
Shape Memory Effects

The influence of liquid crystals on the properties of sisal fibre polyurethanes with multi-shape memory effects

2019 ◽  
Vol 43 (7) ◽  
pp. 3111-3118 ◽  
Author(s):  
Lulu Pan ◽  
Jianfeng Ban ◽  
Li Ren ◽  
Zuocai Zhang ◽  
Qingyuan Peng ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Shape Memory ◽  
Memory Effects ◽  
Sisal Fibre ◽  
Shape Memory Properties ◽  
Shape Memory Effects

LC-SF-SMPUs show excellent multi-shape memory properties.

Shape memory effects in self-healing polymers

2020 ◽  
Vol 102 ◽  
pp. 101208 ◽  
Author(s):  
Chris C. Hornat ◽  
Marek W. Urban
Keyword(s):  
Shape Memory ◽  
Memory Effects ◽  
Self Healing ◽  
Shape Memory Effects

scholarly journals Polyurethane networks based on disulfide bonds: from tunable multi-shape memory effects to simultaneous self-healing

2018 ◽  
Vol 62 (3) ◽  
pp. 437-447 ◽  
Author(s):  
Xiao-Ying Deng ◽  
Hui Xie ◽  
Lan Du ◽  
Cheng-Jie Fan ◽  
Chuan-Ying Cheng ◽  
...  
Keyword(s):  
Shape Memory ◽  
Disulfide Bonds ◽  
Memory Effects ◽  
Self Healing ◽  
Polyurethane Networks ◽  
Shape Memory Effects
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