scholarly journals Harnessing reversible dry adhesion using shape memory polymer microparticles

RSC Advances ◽  
2021 ◽  
Vol 11 (32) ◽  
pp. 19616-19622
Author(s):  
Wenbing Li ◽  
Junhao Liu ◽  
Wanting Wei ◽  
Kun Qian
Keyword(s):  
Shape Memory ◽  
Shape Memory Polymer ◽  
Shape Memory Polymers ◽  
Memory Effects ◽  
Reversible Adhesion ◽  
Dry Adhesion ◽  
Bonding Property ◽  
Shape Memory Effects ◽  
Polymer Microparticles

Shape memory polymers can provide excellent bonding property because of their shape memory effects. This paper proposes an adhesive unit that is capable of repeatable smart adhesion and exhibits reversible adhesion under heating.

scholarly journals Structural multi-colour invisible inks with submicron 4D printing of shape memory polymers

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Wang Zhang ◽  
Hao Wang ◽  
Hongtao Wang ◽  
John You En Chan ◽  
Hailong Liu ◽  
...  
Keyword(s):  
Shape Memory ◽  
Information Hiding ◽  
Shape Memory Polymer ◽  
Shape Memory Polymers ◽  
Photonic Devices ◽  
Temperature Sensitive ◽  
4D Printing ◽  
Two Photon ◽  
Shape Memory Effects ◽  
Nanoscale Structure

AbstractFour-dimensional (4D) printing of shape memory polymer (SMP) imparts time responsive properties to 3D structures. Here, we explore 4D printing of a SMP in the submicron length scale, extending its applications to nanophononics. We report a new SMP photoresist based on Vero Clear achieving print features at a resolution of ~300 nm half pitch using two-photon polymerization lithography (TPL). Prints consisting of grids with size-tunable multi-colours enabled the study of shape memory effects to achieve large visual shifts through nanoscale structure deformation. As the nanostructures are flattened, the colours and printed information become invisible. Remarkably, the shape memory effect recovers the original surface morphology of the nanostructures along with its structural colour within seconds of heating above its glass transition temperature. The high-resolution printing and excellent reversibility in both microtopography and optical properties promises a platform for temperature-sensitive labels, information hiding for anti-counterfeiting, and tunable photonic devices.

Shape memory polymer composite structures with two-way shape memory effects

2012 ◽  
Vol 89 ◽  
pp. 216-218 ◽  
Author(s):  
Zhengdao Wang ◽  
Weibin Song ◽  
Liaoliang Ke ◽  
Yuesheng Wang
Keyword(s):  
Shape Memory ◽  
Polymer Composite ◽  
Composite Structures ◽  
Shape Memory Polymer ◽  
Memory Effects ◽  
Shape Memory Effects

scholarly journals A Mini-Review of Shape-Memory Polymer-Based Materials : Stimuli-responsive shape-memory polymers

2020 ◽  
Vol 64 (4) ◽  
pp. 425-442
Author(s):  
Mathew J. Haskew ◽  
John G. Hardy
Keyword(s):  
Shape Memory ◽  
Shape Memory Polymer ◽  
Shape Memory Polymers ◽  
Research Interest ◽  
External Stimulus ◽  
Stimuli Responsive ◽  
Responsive Polymer ◽  
Potential Applications ◽  
Shape Memory Effects ◽  
Stimuli Responsive Polymer

Shape-memory polymers (SMPs) enable the production of stimuli-responsive polymer-based materials with the ability to undergo a large recoverable deformation upon the application of an external stimulus. Academic and industrial research interest in the shape-memory effects (SMEs) of these SMP-based materials is growing for task-specific applications. This mini-review covers interesting aspects of SMP-based materials, their properties, how they may be investigated and highlights examples of the potential applications of these materials.

Mechanisms of multi-shape memory effects and associated energy release in shape memory polymers

Soft Matter ◽  
2012 ◽  
Vol 8 (20) ◽  
pp. 5687 ◽  
Author(s):  
Kai Yu ◽  
Tao Xie ◽  
Jinsong Leng ◽  
Yifu Ding ◽  
H. Jerry Qi
Keyword(s):  
Shape Memory ◽  
Energy Release ◽  
Shape Memory Polymers ◽  
Memory Effects ◽  
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.

Modeling of Polyurethane's Shape Memory Effects and Recovery Time under Different Recovery Temperatures

2013 ◽  
Vol 575-576 ◽  
pp. 95-100
Author(s):  
Ling Luo ◽  
Yu Xi Jia ◽  
Xiao Xia Wang ◽  
Zhao Jing Wang ◽  
Jun Peng Gao ◽  
...  
Keyword(s):  
Shape Memory ◽  
Recovery Time ◽  
Shape Memory Polymer ◽  
Memory Effects ◽  
Molecular Architecture ◽  
Thermally Induced ◽  
Shape Memory Effects ◽  
Viscoelastic Theory ◽  
Different Shapes ◽  
Good Agreement

Shape memory polymer (SMP), which has attracted lots of attentions recently, is a kind of smart material. The thermally induced SMPs can remember two different shapes because of the combined functions of polymers molecular architecture, morphology and the specific multi-step processing technology named shape memory creation programming. This paper aims to analyze Polyurethanes shape memory properties based on the viscoelastic theory. First, the Polyurethanes creep and relaxation performances are simulated using Maxwell-Weichert model. The simulated results of relaxation process are found in good agreement with the experimental results. Later, same model is used to describe Polyurethanes shape memory effects in strain-controlled situation. As the results show, Polyurethanes shape recovery ratios are almost 100%, whereas shape fixing properties are relatively poor. Moreover, as shown by the simulated results of recovery time under different recovery temperatures, recovery time shortens along with the increase of recovery temperature.

Various shape memory effects of stimuli-responsive shape memory polymers

2013 ◽  
Vol 22 (9) ◽  
pp. 093001 ◽  
Author(s):  
Harper Meng ◽  
Habib Mohamadian ◽  
Michael Stubblefield ◽  
Dwayne Jerro ◽  
Samuel Ibekwe ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Polymers ◽  
Memory Effects ◽  
Stimuli Responsive ◽  
Shape Memory Effects

scholarly journals Numerical Analysis of Space Deployable Structure Based on Shape Memory Polymers

Micromachines ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 833
Author(s):  
Zepeng He ◽  
Yang Shi ◽  
Xiangchao Feng ◽  
Zhen Li ◽  
Yan Zhang ◽  
...  
Keyword(s):  
Shape Memory ◽  
Large Scale ◽  
Shape Memory Polymers ◽  
Maxwell Model ◽  
Memory Effects ◽  
Space Structures ◽  
Future Research ◽  
Thermodynamic Behavior ◽  
Generalized Maxwell Model ◽  
Shape Memory Effects

Shape memory polymers (SMPs) have been applied in aerospace engineering as deployable space structures. In this work, the coupled finite element method (FEM) was established based on the generalized Maxwell model and the time–temperature equivalence principle (TTEP). The thermodynamic behavior and shape memory effects of a single-arm deployment structure (F-DS) and four-arm deployment structure (F-DS) based on SMPs were analyzed using the coupled FEM. Good consistency was obtained between the experimental data and simulation data for the tensile and S-DS recovery forces, verifying that the coupled FEM can accurately and reliably describe the thermodynamic behavior and shape memory effects of the SMP structure. The step-by-step driving structure is suitable for use as a large-scale deployment structure in space. This coupled FEM provides a new direction for future research on epoxy SMPs.

Shape memory polymer hybrids of SBS/dl-PLA and their shape memory effects

2013 ◽  
Vol 137 (3) ◽  
pp. 750-755 ◽  
Author(s):  
Heng Zhang ◽  
Zhi Chen ◽  
Zheng Zheng ◽  
Xiaomin Zhu ◽  
Haitao Wang
Keyword(s):  
Shape Memory ◽  
Shape Memory Polymer ◽  
Memory Effects ◽  
Polymer Hybrids ◽  
Shape Memory Effects

Triple-shape memory effects of bismaleimide based thermosetting polymer networks prepared via heterogeneous crosslinking structures

RSC Advances ◽  
2016 ◽  
Vol 6 (13) ◽  
pp. 10233-10241 ◽  
Author(s):  
Qiwei Zhang ◽  
Hongqiu Wei ◽  
Yanju Liu ◽  
Jinsong Leng ◽  
Shanyi Du
Keyword(s):  
Shape Memory ◽  
Polymer Networks ◽  
Shape Memory Polymers ◽  
Memory Effects ◽  
Shape Memory Effects ◽  
Thermosetting Polymer ◽  
Triple Shape Memory

A series of bismaleimide based triple shape memory polymers with heterogeneous crosslinking structures were synthesized, and their shape memory behaviours are characterized.

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