Journal ArticleDOI
Recyclable, Self-Healing, Thermadapt Triple-Shape Memory Polymers Based on Dual Dynamic Bonds.
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TLDR
Imine bonds and ionic hydrogen bonds dual crosslinked polybutadiene networks showed triple-shape memory effect (triple-SME), and the dual dynamic bonds offered PB networks outstanding solid-state plasticity, recyclability and self-healing behavior.Abstract:
Fabricating a single polymer network with a combination of a multi-shape memory effect (multiple-SME), solid-state plasticity, recyclability and self-healing behavior remains a challenge. We designed imine bond and ionic hydrogen bond dual cross-linked polybutadiene (PB) networks. The resulting PB networks showed a triple-shape memory effect, where imine bonds could be used to fix the permanent shape and ionic hydrogen bonds and glass transition acted as the transition segments for fixing/releasing the temporary shapes. Additionally, the dual dynamic bonds offered PB networks outstanding solid-state plasticity, recyclability and self-healing behavior. This strategy provides some insights for preparing shape memory polymers integrating multiple-SME and multi-functionality.read more
Citations
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Journal ArticleDOI
Dynamic Covalent Polymer Networks: A Molecular Platform for Designing Functions beyond Chemical Recycling and Self-Healing.
TL;DR: In this article, the authors provide an overview of the above progress with particular focus on molecular design strategies for the exploitation of functional material properties, and point out the remaining issues and offer perspectives on how this class of materials can shape the future in ways that are complementary with classical thermoplastic and thermoset polymers.
Journal ArticleDOI
Evolution of self-healing elastomers, from extrinsic to combined intrinsic mechanisms: a review
TL;DR: This article provides a rigorous overview of this new generation of self-healing elastomers, in which the combination of covalent bonds and non-covalent interactions provides an optimal balance between mechanical performance and repairability.
Journal ArticleDOI
Assembling of Reprocessable Polybutadiene-Based Vitrimers with High Strength and Shape Memory via Catalyst-Free Imine-Coordinated Boroxine
Yinxin Yang,Yinxin Yang,Lingyun Huang,Lingyun Huang,Ruiyao Wu,Ruiyao Wu,Weifeng Fan,Quanquan Dai,Jianyun He,Chenxi Bai,Chenxi Bai +10 more
TL;DR: This work presents a facile and effective approach to achieve multifunctional polymer with customized attributes that can recycle end-of-life rubber to alleviate environmental pollution and provide inspiration for fabricating targeted materials by uniting the dynamic covalent or non-covalent bonds.
Journal ArticleDOI
Smart materials in cardiovascular implants: Shape memory alloys and shape memory polymers.
TL;DR: The characteristics, advantages, and disadvantages of shape memory alloys and shape memory polymers which are relevant to clinical cardiovascular applications are outlined, and the potential of these smart materials for applications in coronary stents and transcatheter valves is described.
Journal ArticleDOI
Multifunctional Thermoplastic Polyurea Based on the Synergy of Dynamic Disulfide Bonds and Hydrogen Bond Cross-Links.
TL;DR: In this article, a multifunctional thermoplastic polyureas cross-linked by urea hydrogen bonds are prepared, which possess the multipathway remodeling property. But this strategy is inadequate to reshape and recycle through the self-healing property or liquid-state remoldability.
References
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PatentDOI
Shape memory polymers
Robert Langer,Andreas Lendlein +1 more
TL;DR: A very broad, additional spectrum of possible applications for intelligent polymers that covers an area from minimally invasive surgery, through high-performance textiles, up to self-repairing plastic components in every kind of transportation vehicles.
Journal ArticleDOI
Tunable polymer multi-shape memory effect
TL;DR: It is shown that the perfluorosulphonic acid ionomer (PFSA), which has only one broad reversible phase transition, exhibits dual-, triple-, and at least quadruple-shape memory effects, all highly tunable without any change to the material composition.
Journal ArticleDOI
Recent progress in shape memory polymer: New behavior, enabling materials, and mechanistic understanding
Qian Zhao,H. Jerry Qi,Tao Xie +2 more
TL;DR: Progress in new shape memory enabling mechanisms and triggering methods, variations of in shape memory forms (shape memory surfaces, hydrogels, and microparticles), newshape memory behavior (multi-SME and two-way-S ME), and novel fabrication methods are reviewed.
Journal ArticleDOI
Multifunctional Shape-Memory Polymers
TL;DR: In this review different concepts for the creation of multifunctionality are derived from the various polymer network architectures of thermally-induced SMP, such as nanocomposites, as well as one-component polymer systems, in which independent functions are integrated.
Journal ArticleDOI
Mouldable liquid-crystalline elastomer actuators with exchangeable covalent bonds
TL;DR: It is shown that the processing bottleneck of LCEs can be overcome by introducing exchangeable links in place of permanent network crosslinks, a concept previously demonstrated for vitrimers.