Mechanically strong and tough hydrogels with pH-triggered self-healing and shape memory properties based on a dual physically crosslinked network

2020 ◽  
Vol 11 (11) ◽  
pp. 1906-1918 ◽  
Author(s):  
Tao Liu ◽  
Shaoshuang Zou ◽  
Chen Hang ◽  
Jian Li ◽  
Xiang Di ◽  
...  
Keyword(s):  
Shape Memory ◽  
Self Healing ◽  
Shape Memory Properties ◽  
Physically Crosslinked

A kind of dual physically crosslinked hydrogel with pH-triggered self-healing and shape memory properties is reported.

Self-healing hydrogel sensors with multiple shape memory properties for human motion monitoring

2021 ◽  
Vol 45 (1) ◽  
pp. 314-320
Author(s):  
Yuewen Chen ◽  
Shengping Dai ◽  
Hao Zhu ◽  
Hongwei Hu ◽  
Ningyi Yuan ◽  
...  
Keyword(s):  
Shape Memory ◽  
Human Motion ◽  
Self Healing ◽  
Shape Memory Properties ◽  
Human Motion Monitoring

Shape memory hydrogels offer new opportunities for the development of smart wearables due to their intelligent responsiveness.

scholarly journals The Effect of 4-Octyldecyloxybenzoic Acid on Liquid-Crystalline Polyurethane Composites with Triple-Shape Memory and Self-Healing Properties

2016 ◽  
Author(s):  
Jianfeng Ban ◽  
Linjiang Zhu ◽  
Shaojun Chen ◽  
Yiping Wang
Keyword(s):  
Shape Memory ◽  
Liquid Crystalline ◽  
Crystallization Rate ◽  
Self Healing ◽  
Two Phase ◽  
Structure Morphology ◽  
Shape Memory Properties ◽  
Triple Shape Memory ◽  
Polyurethane Composites ◽  
Shape Memory Polyurethane

To better understand the shape memory materials and self-healing materials, a new series of liquid-crystalline shape memory polyurethane (LC-SMPU) composites, named SMPU-OOBAm, were successfully prepared by incorporating 4-octyldecyloxybenzoic acid (OOBA) into the PEG-based SMPU. The effect of OOBA on the structure, morphology and properties has been carefully investigated. The results demonstrate that SMPU-OOBAm have liquid crystalline properties, triple-shape memory properties and self-healing properties. The incorporated OOBA promotes the crystallizability of both soft and hard segments of SMPU, and the crystallization rate of the hard segment of SMPU decreases when the OOBA-content increases. Additionally, the SMPU-OOBAm forms a two-phase separated structure (SMPU phase and OOBA phase), and it shows two-step modulus changes upon heating. Therefore, the SMPU-OOBAm shows triple-shape memory behavior, and the shape recovery ratio decreases with an increase in the OOBA content. Finally, SMPU-OOBAm shows self-healing properties. The new mechanism can be ascribed to the heating-induced “bleeding” of OOBA in the liquid crystalline state and the subsequent re-crystallization upon cooling. This successful combination of liquid crystalline properties, triple-shape memory properties and self-healing properties make the SMPU-OOBAm composites with many promise applications in smart optical devices, smart electronic devices and smart sensors.

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.

Locust bean gum/gellan gum double-network hydrogels with superior self-healing and pH-driven shape-memory properties

Soft Matter ◽  
2019 ◽  
Vol 15 (30) ◽  
pp. 6171-6179 ◽  
Author(s):  
Yukai Lv ◽  
Zheng Pan ◽  
Cunzheng Song ◽  
Yulong Chen ◽  
Xin Qian
Keyword(s):  
Shape Memory ◽  
Gellan Gum ◽  
Locust Bean Gum ◽  
Self Healing ◽  
Double Network ◽  
Natural Polysaccharide ◽  
Shape Memory Properties ◽  
Locust Bean

Double-network hydrogels based on two natural polysaccharide polymers, locust bean gum and gellan gum, have been fabricated and exhibited excellent self-healing, thermo-processability, and pH-driven shape memory properties.

Self-Healing, Expansion-Contraction, and Shape-Memory Properties of a Preorganized Supramolecular Hydrogel through Host-Guest Interactions

2015 ◽  
Vol 127 (31) ◽  
pp. 9112-9115 ◽  
Author(s):  
Kohei Miyamae ◽  
Masaki Nakahata ◽  
Yoshinori Takashima ◽  
Akira Harada
Keyword(s):  
Shape Memory ◽  
Self Healing ◽  
Supramolecular Hydrogel ◽  
Shape Memory Properties

Highly efficient self-healing materials with excellent shape memory and unprecedented mechanical properties

2020 ◽  
Vol 8 (32) ◽  
pp. 16203-16211 ◽  
Author(s):  
Chaoxian Chen ◽  
Siwen Chen ◽  
Zhihao Guo ◽  
Wanruo Hu ◽  
Zhangpei Chen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Wound Healing ◽  
Shape Memory ◽  
Self Healing ◽  
Highly Efficient ◽  
Shape Memory Properties ◽  
Body Sensors

Novel dual-physical cross-linked elastomers with unprecedented mechanical, highly efficient self-healing, and excellent shape memory properties are designed, which will offer new guild for future body-sensors, stimulating reactive and wound healing.

A facile approach for polymer hydrogels with enhanced strength, self−healing and multi−responsive shape memory properties

2019 ◽  
Vol 6 (12) ◽  
pp. 125340 ◽  
Author(s):  
Xi Yang ◽  
Meiling Guo ◽  
Yuanpeng Wu ◽  
Shishan Xue ◽  
Yuanmeng Xia ◽  
...  
Keyword(s):  
Shape Memory ◽  
Self Healing ◽  
Polymer Hydrogels ◽  
Shape Memory Properties
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