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.

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

Cellulose nanocrystals (CNC) reinforced shape memory polyurethane ribbons for future biomedical applications and design

2018 ◽  
Vol 33 (3) ◽  
pp. 377-392 ◽  
Author(s):  
Irina T Garces ◽  
Samira Aslanzadeh ◽  
Yaman Boluk ◽  
Cagri Ayranci
Keyword(s):  
Shape Memory ◽  
Cellulose Nanocrystals ◽  
Biomedical Applications ◽  
Flexural Modulus ◽  
Potential Candidate ◽  
The Past ◽  
Printing Cost ◽  
Surgical Sutures ◽  
Orthodontic Devices ◽  
Shape Memory Polyurethane

Shape memory materials are an innovative type of materials that reversibly store a temporary shape and recover back to the original dimensions with the application of an external mechanism such as heat. Shape memory polymers (SMP), specifically thermoplastic SMP (e.g. shape memory polyurethane (SMPU)) have received much attention during the past decade because of the promising future applications and advantages such as ease of processability for thermoplastic SMP (e.g. by 3-D printing), cost, and biocompatibility. In the biomedical field, applications such as stents, surgical sutures, and orthodontic devices, amongst others have been proposed. The addition of fillers to the material can modify the material to improve their load bearing capabilities. Bio-based fillers such as cellulose nanocrystals (CNC) have been proposed in a variety of reinforcing applications. The present work focuses on the experimental description of the addition of nonmodified CNC to SMPU. The work studied the effect on melt-extruded ribbons, for 0, 0.5, 1, 2, and 4 wt%. An increase of yield point, toughness, flexural modulus, recovery rate, and decrease of total time showed that SMPU/CNC nanocomposites are a potential candidate to use in future biomedical applications.

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

Study of Nano-Fe3O4 Addition on Magnetic and Mechanical Properties of HMDI-Based Polyurethane

2017 ◽  
Vol 894 ◽  
pp. 25-28
Author(s):  
Mochamad Chalid ◽  
Masrudin ◽  
Jaka Haris Mustafa
Keyword(s):  
Mechanical Properties ◽  
Shape Memory ◽  
Magnetic Behavior ◽  
Potential Candidate ◽  
Poly Ethylene Glycol ◽  
Chemical Structures ◽  
Wide Range ◽  
Matrix Morphology ◽  
Poly Ethylene ◽  
Shape Memory Polyurethane

Polyurethane has a wide range of chemical structures available led to the design of materials that easily can meet requirements to shape memory polyurethane (SMPU) due to its ability to retain its shape after deformation through giving a certain disturbance like magnetic field. Based on the previous study, polyurethanes synthesized by reacting 4,4’-methylenebis (cyclohexyl isocyanate) to poly(ethylene glycol) Mw: 6000 as polyurethane chain with 1,1,1-trimethylol propane as chain extender, is a potential candidate for shape memory polyurethane (SMPU). Furthermore this study was performed by adding Fe3O4 nanoparticles as a filler to provide magnetic behavior. In this study, The magnetic and mechanical properties of the SMPU after adding Fe3O4 nanoparticles were evaluated by observing compatibility between the filler and matrix, morphology, ability in retaining shape, and mechanical properties through measuring FTIR, FESEM, Vibrating Magnetometer and UTM, respectively. This study reported a good compatibility between Fe3O4 and the polyurethane, and lack agglomeration of Fe3O4 nanoparticles indicated FTIR and FESEM-EDAX, the fastest ability on retaining its shape obtained from materials with lowest Fe3O4 (3 wt%). Meanwhile the best mechanical and magnetic was resulted from adding 11 wt% of Fe3O4

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