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

Materials ◽  
2016 ◽  
Vol 9 (9) ◽  
pp. 792 ◽  
Author(s):  
Jianfeng Ban ◽  
Linjiang Zhu ◽  
Shaojun Chen ◽  
Yiping Wang
Keyword(s):  
Shape Memory ◽  
Liquid Crystalline ◽  
Self Healing ◽  
Triple Shape Memory ◽  
Polyurethane Composites

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 liquid-crystalline shape-memory polyurethane composites based on polyurethane with semi-crystalline reversible phase and hexadecyloxybenzoic acid for self-healing applications

2014 ◽  
Vol 2 (21) ◽  
pp. 4203-4212 ◽  
Author(s):  
Shaojun Chen ◽  
Hongming Yuan ◽  
Haitao Zhuo ◽  
Shiguo Chen ◽  
Haipeng Yang ◽  
...  
Keyword(s):  
Shape Memory ◽  
Liquid Crystalline ◽  
Self Healing ◽  
Triple Shape Memory ◽  
Polyurethane Composites ◽  
Shape Memory Polyurethane ◽  
Reversible Phase

Novel liquid crystalline shape memory polyurethane composites display liquid crystalline properties, triple-shape memory behaviours and self-healing behaviours.

Recyclable, Self-Healing, Thermadapt Triple-Shape Memory Polymers Based on Dual Dynamic Bonds

2020 ◽  
Vol 12 (8) ◽  
pp. 9833-9841 ◽  
Author(s):  
Huan Zhang ◽  
Dong Wang ◽  
Ningning Wu ◽  
Cuihua Li ◽  
Caizhen Zhu ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Polymers ◽  
Self Healing ◽  
Triple Shape Memory

Elaborate fabrication of well-defined side-chain liquid crystalline polyurethane networks with triple-shape memory capacity

2015 ◽  
Vol 3 (25) ◽  
pp. 13435-13444 ◽  
Author(s):  
Zhibin Wen ◽  
Tianhao Zhang ◽  
Yan Hui ◽  
Wanli Wang ◽  
Keke Yang ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Liquid Crystalline ◽  
Memory Capacity ◽  
Side Chain ◽  
Thermal Transition ◽  
Transition Temperatures ◽  
Polyurethane Networks ◽  
Triple Shape Memory

A series of side-chain liquid crystalline polyurethane networks (SCLCPU-Ns) with well-defined architecture are prepared via an elaborate strategy. The SCLCPU-Ns display dual thermal transition temperatures (Tg and Tcl), which can be utilized as Ttrans to trigger the triple shape memory effect.

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.

scholarly journals Synthesis of cross-linked triple shape memory polyurethane with self-healing functionalities

2021 ◽  
Vol 96 ◽  
pp. 107099
Author(s):  
Wenwen Zhang ◽  
Xuefei Leng ◽  
Mengyun Gao ◽  
Zhiyong Wei ◽  
Yiying Wang ◽  
...  
Keyword(s):  
Shape Memory ◽  
Self Healing ◽  
Triple Shape Memory ◽  
Shape Memory Polyurethane

scholarly journals Self-healing and shape memory functions exhibited by supramolecular liquid-crystalline networks formed by combination of hydrogen bonding interactions and coordination bonding

2021 ◽  
Author(s):  
Junya Uchida ◽  
Masafumi Yoshio ◽  
Takashi Kato
Keyword(s):  
Hydrogen Bonding ◽  
Shape Memory ◽  
Self Assembly ◽  
Liquid Crystalline ◽  
Building Blocks ◽  
Self Healing ◽  
New Approach ◽  
Hydrogen Bonding Interactions ◽  
Coordination Bonding ◽  
Molecular Building Blocks

We here report a new approach to develop self-healing shape memory supramolecular liquid-crystalline (LC) networks through self-assembly of molecular building blocks via combination of hydrogen bonding and coordination bonding. We...

Optically and thermally activated shape memory supramolecular liquid crystalline polymers

2016 ◽  
Vol 4 (22) ◽  
pp. 4946-4953 ◽  
Author(s):  
Shangyi Fu ◽  
Hu Zhang ◽  
Yue Zhao
Keyword(s):  
Shape Memory ◽  
Liquid Crystalline ◽  
Uv Light ◽  
Crystalline Polymer ◽  
Crystalline Polymers ◽  
Thermally Activated ◽  
Azobenzene Mesogens ◽  
Triple Shape Memory ◽  
Spatiotemporal Control ◽  
Polymer Bearing

A supramolecular side-chain liquid crystalline polymer bearing azobenzene mesogens exhibits not only the triple-shape memory effect but also UV light-enabled spatiotemporal control of shape recovery.

Salt-mediated triple shape-memory ionic conductive polyampholyte hydrogel for wearable flexible electronics

2021 ◽  
Author(s):  
Shanshan Wu ◽  
Zijian Shao ◽  
Hui Xie ◽  
Tao Xiang ◽  
Shaobing Zhou
Keyword(s):  
Ionic Conductivity ◽  
Shape Memory ◽  
Human Health ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Flexible Electronics ◽  
Strain Sensors ◽  
Self Healing ◽  
Healing Property ◽  
Triple Shape Memory

A type of supramolecular polyampholyte hydrogel with salt-mediated triple shape-memory effect, ionic conductivity, high stretchability and self-healing property was fabricated, which can be applied for strain sensors to monitor human health.

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