Journal ArticleDOI
A Review of Shape Memory Polymers and Composites: Mechanisms, Materials, and Applications
TLDR
A comprehensive analysis of the shape recovery mechanisms, multifunctionality, applications, and recent advances in SMPs and SMPCs is presented.Abstract:
Over the past decades, interest in shape memory polymers (SMPs) has persisted, and immense efforts have been dedicated to developing SMPs and their multifunctional composites. As a class of stimuli-responsive polymers, SMPs can return to their initial shape from a programmed temporary shape under external stimuli, such as light, heat, magnetism, and electricity. The introduction of functional materials and nanostructures results in shape memory polymer composites (SMPCs) with large recoverable deformation, enhanced mechanical properties, and controllable remote actuation. Because of these unique features, SMPCs have a broad application prospect in many fields covering aerospace engineering, biomedical devices, flexible electronics, soft robotics, shape memory arrays, and 4D printing. Herein, a comprehensive analysis of the shape recovery mechanisms, multifunctionality, applications, and recent advances in SMPs and SMPCs is presented. Specifically, the combination of functional, reversible, multiple, and controllable shape recovery processes is discussed. Further, established products from such materials are highlighted. Finally, potential directions for the future advancement of SMPs are proposed.read more
Citations
More filters
Journal ArticleDOI
Dual-Encryption in a Shape-Memory Hydrogel with Tunable Fluorescence and Reconfigurable Architecture.
TL;DR: In this paper, a hard hydrogel with good shape-memory ability and phototunable fluorescence is reported, which affords reprogrammable shape designing and information encoding for dual-encryption.
3D extrusion bioprinting
Yu Shrike Zhang,Ghazaleh Haghiashtiani,Tania Hübscher,Daniel J. Kelly,Jia Min Lee,Matthias P. Lutolf,Michael C. McAlpine,Wai Yee Yeong,Marcy Zenobi-Wong,Jos Malda +9 more
TL;DR: Zhang et al. as mentioned in this paper described the methodology of 3D extrusion bioprinting, focusing on the selection of hardware, software and bioinks, and provided an outlook on possible future refinements of the technology.
Journal ArticleDOI
Additive manufacturing of polymer nanocomposites: Needs and challenges in materials, processes, and applications
TL;DR: A comparative review of additive manufacturing processes for polymer composites and their applications is presented in this article, which aims to provide engineers and scientists with an updated understanding of the underlying issues, barriers, limitations, and opportunities.
Journal ArticleDOI
Magneto‐/ electro‐responsive polymers toward manufacturing, characterization, and biomedical/ soft robotic applications
Ebrahim Yarali,Mahdi Baniasadi,Ali Zolfagharian,Maede Chavoshi,Fatemeh Arefi,Mokarram Hossain,Anil K. Bastola,M. H. Sheikh Ansari,Alireza Foyouzat,Ali Dabbagh,Mohamad Mehdi Ebrahimi,Mohammad J. Mirzaali,Mahdi Bodaghi +12 more
TL;DR: Magneto-/ electro-responsive polymers (MERPs) as discussed by the authors are a class of stimuli-responsive materials that are actuated when triggered by external magnetic/electric fields.
Journal ArticleDOI
4D printing of shape memory polymer composites: A review on fabrication techniques, applications, and future perspectives
TL;DR: In this article , a review article presents important 4D technologies in conjunction with the underlying functionalities of stimuli-responsive polymer composites, and elucidates the future opportunities of 4D-printed SMPCs in terms of preprogramming knowledge, multi-way SMPC, multimaterial printing, sustainability, and potential applications.
References
More filters
Journal ArticleDOI
Biodegradable, Elastic Shape Memory Polymers for Potential Biomedical Applications
Andreas Lendlein,Robert Langer +1 more
TL;DR: A group of degradable thermoplastic polymers that are able to change their shape after an increase in temperature enables bulky implants to be placed in the body through small incisions or to perform complex mechanical deformations automatically.
Journal ArticleDOI
Biomimetic 4D printing
A. Sydney Gladman,A. Sydney Gladman,Elisabetta A. Matsumoto,Elisabetta A. Matsumoto,Ralph G. Nuzzo,Lakshminarayanan Mahadevan,Lakshminarayanan Mahadevan,Jennifer A. Lewis,Jennifer A. Lewis +8 more
TL;DR: In this article, a plant-inspired shape morphing system is presented, where a composite hydrogel architecture is encoded with localized, anisotropic swelling behavior controlled by the alignment of cellulose fibrils along prescribed four-dimensional printing pathways.
Journal ArticleDOI
Silica-Like Malleable Materials from Permanent Organic Networks
TL;DR: In this paper, the authors designed epoxy networks that can rearrange their topology by exchange reactions without depolymerization, and showed that they are insoluble and processable.
Journal ArticleDOI
Light-induced shape-memory polymers
TL;DR: Polymers containing cinnamic groups can be deformed and fixed into pre-determined shapes—such as elongated films and tubes, arches or spirals—by ultraviolet light illumination and can recover their original shape at ambient temperatures when exposed to ultraviolet light of a different wavelength.