A combined mechanical, microscopic and local electrochemical evaluation of self-healing properties of shape-memory polyurethane coatings

2011 ◽  
Vol 56 (26) ◽  
pp. 9619-9626 ◽  
Author(s):  
Y. González-García ◽  
J.M.C. Mol ◽  
T. Muselle ◽  
I. De Graeve ◽  
G. Van Assche ◽  
...  
Keyword(s):  
Shape Memory ◽  
Self Healing ◽  
Polyurethane Coatings ◽  
Shape Memory Polyurethane ◽  
Electrochemical Evaluation

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.

Multi-level self-healing ability of shape memory polyurethane coating with microcapsules by induction heating

2019 ◽  
Vol 368 ◽  
pp. 1033-1044 ◽  
Author(s):  
Weijie Fan ◽  
Yong Zhang ◽  
Weihua Li ◽  
Wei Wang ◽  
Xiaodong Zhao ◽  
...  
Keyword(s):  
Shape Memory ◽  
Induction Heating ◽  
Self Healing ◽  
Polyurethane Coating ◽  
Multi Level ◽  
Shape Memory Polyurethane

scholarly journals Shape Memory Polyurethane and its Composites for Various Applications

2019 ◽  
Vol 9 (21) ◽  
pp. 4694 ◽  
Author(s):  
Arvind Gupta ◽  
Anoth Maharjan ◽  
Beom Soo Kim
Keyword(s):  
Tissue Engineering ◽  
Literature Review ◽  
Shape Memory ◽  
Electromagnetic Interference ◽  
Unique Property ◽  
Potential Candidate ◽  
Self Healing ◽  
Intrinsic Shape ◽  
Hard Segments ◽  
Shape Memory Polyurethane

The inherent capability to deform and reform in a predefined environment is a unique property existing in shape memory polyurethane. The intrinsic shape memory ability of the polyurethane is due to the presence of macro domains of soft and hard segments in its bulk, which make this material a potential candidate for several applications. This review is focused on manifesting the applicability of shape memory polyurethane and its composites/blends in various domains, especially to human health such as shielding of electromagnetic interference, medical bandage development, bone tissue engineering, self-healing, implants development, etc. A coherent literature review highlighting the prospects of shape memory polyurethane in versatile applications has been presented.

scholarly journals Cooperative self-healing performance of shape memory polyurethane and Alodine-containing microcapsules

RSC Advances ◽  
2017 ◽  
Vol 7 (74) ◽  
pp. 46778-46787 ◽  
Author(s):  
Weijie Fan ◽  
Weihua Li ◽  
Yong Zhang ◽  
Wei Wang ◽  
Xiaoying Zhang ◽  
...  
Keyword(s):  
Shape Memory ◽  
Self Healing ◽  
Shape Memory Polyurethane

In this study, a method to prepare self-healing coatings by incorporating Alodine-containing microcapsules as fillers in Shape Memory Polyurethane (SMPU) was presented.

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

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.

NIR-light-induced thermoset shape memory polyurethane composites with self-healing and recyclable functionalities

2020 ◽  
Vol 195 ◽  
pp. 108092 ◽  
Author(s):  
Weining Du ◽  
Yong Jin ◽  
Liangjie Shi ◽  
Yichao Shen ◽  
Shuangquan Lai ◽  
...  
Keyword(s):  
Shape Memory ◽  
Self Healing ◽  
Nir Light ◽  
Polyurethane Composites ◽  
Shape Memory Polyurethane
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