Recyclable and Self-Healing Polyurethane Composites Based on Diels-Alder Reaction for Efficient Solar-to-Thermal Energy Storage

Biomaterials- and biostructures Inspired high-performance flexible stretchable strain sensors: A review

Flexible conductive composites can be used as wearable strain sensors, which are widely used in the fields of new-generation robotics, electronic skin, and human detection. However, how to make conductive composites that simultaneously possess flexibility, stretchability, self-healing, and sensing capability is challenging research. In this work, we innovatively designed and prepared a silicone polymer conductive composite. MXenes and amino poly(dimethylsiloxane) were modified by small biomolecules via an esterification reaction and a Schiff base reaction, respectively. The modified MXenes are uniformly dispersed, which endows the composite with good electrical conductivity. The reversibility of multiple hydrogen bonds and imine bonds in the composite system makes it have ideal tensile properties and high-efficiency self-healing ability without external stimulation. The conductive composite containing 10 wt % A-MXenes showed an elongation of 81%, and its mechanical strength could reach 1.81 MPa. After repair, the tensile properties and the electrical conductivity could be restored to 98.4 and 97.6%, respectively. In addition, the conductive composite is further evaluated for the value of wearable strain sensors. Even after cut-healed processes, the conductive composite can still accurately detect tiny human movements (including speaking, swallowing, and pressing). This kind of self-healing MXene/PDMS elastomers based on the modification of small biomolecules has great potential as wearable strain sensors. This simple preparation method provides guidance for future multifunctional flexible electronic materials.

Self-Healing Ti3C2 MXene/PDMS Supramolecular Elastomers Based on Small Biomolecules Modification for Wearable Sensors.

Flexible Hybrid Sensor Systems with Feedback Functions

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.

Recyclable, Self-Healing, Thermadapt Triple-Shape Memory Polymers Based on Dual Dynamic Bonds.

Biomimetic, recyclable, highly stretchable and self-healing conductors enabled by dual reversible bonds

Improvement of mechanical and thermal properties is always the goal of high-performance general plastic for engineering applications. Herein, isotactic polypropylene/glass fiber/tetrapod-shaped zinc oxide (iPP/GF/T-ZnOw) composites are developed via melt-extrusion on twin-screw extruder. To improve the distribution of T-ZnOw in iPP matrix, T-ZnOw is first modified by various silane coupling agents and its structure is characterized by scanning electron microscopy, Fourier transform infrared spectra, and X-ray diffraction (XRD). The optimized treatment condition is determined via comparison of activation index. The introduction of GF and T-ZnOw could improve the mechanical properties including tensile strength, elastic modulus, flexural strength, flexural modulus, and impact strength, indicating that the surface modification and compatibilizer could enhance the interfacial interaction of iPP/GF/T-ZnOw composites. Moreover, XRD and differential scanning calorimentryresults show that T-ZnOw as a novel β-nucleating agent could induce the formation of β-crystal and the existence of GF counteracts the formation of β-crystal induced by T-ZnOw. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44217.

Synergistic enhancement of glass fiber and tetrapod-shaped ZnO whisker on the mechanical and thermal behavior of isotactic polypropylene

The invention discloses a conductive ink composition with self-repair functions, a method for preparing the conductive ink composition and application thereof The method includes steps of stirring and heating polyester or polyether glycol until the temperature of the polyester or polyether glycol reaches 80-100 DEG C, dehydrating the polyester or polyether glycol under the condition of the vacuum degree lower than 01 MPa for 05-3 h, cooling the polyester or polyether glycol until the temperature of the polyester or polyether glycol reaches 50 DEG C, adding polyisocyanate and polar solvents into the polyester or polyether glycol, carrying out stirring reaction at the temperatures of 60-120 DEG C for 2-14 h and cooling first reaction products until the temperatures of the first reaction products reach 50 DEG C; adding chain extenders with disulfide bonds, hyperbranched structures and active hydrogen atoms into the first reaction products, continuing to carry out reaction at the temperatures of 60-120 DEG C for 2-14 h, uniformly mixing second reaction products and organic silver salt solution with one another and carrying out reduced pressure distillation to obtain the conductive ink composition with the self-repair functions The conductive ink composition with the self-repair functions, the method and the application have the advantages that self-repair can be carried out under heating and UV (ultraviolet) light illumination conditions, the conductive ink composition is free of mixed particles, the solid content of silver can be obviously increased, and the uniformity of ink can be obviously improved; the conductive ink can be used for writing on base materials such as paper, glass and plastics in writing brush and silk-screen printing modes and the like, and the conductive ink composition is excellent in conductivity by means of formaldehyde solution reduction and is suitable for flexible circuits

Conductive ink composition with self-repair functions, method for preparing conductive ink composition and application thereof

Recently, it has become highly desirable but remains a challenge to design strain-sensing materials with rational geometric structures that endow the strain sensors with high sensitivity, large stretchability and a broad sensing range simultaneously. Herein, core–shell Cu–Ag nanowires (NWs) with tunable morphology and oxidation-resistance are achieved by an effective galvanic replacement reaction between Cu NWs and Ag(NH3)2+ without any additional heating, stirring or reducing agent. When the mass ratio of Cu NWs to AgNO3 is 8 : 6, Cu–Ag NWs exhibit the best oxidation-resistance and electrical conductivity retention in harsh environments. Nacre-mimetic conductive composites are achieved by embedding porous conductive networks composed of Cu–Ag NWs/reduced graphene oxide (rGO) in a poly(styrene-block-butadiene-block-styrene) (SBS) matrix, enabling the process to be simple, energy-saving, and scalable. They can detect both tiny and large deformations with a wide sensing range (up to 374% strain), high sensitivity (a gauge factor up to 87 362), high break elongation (up to 660% strain), and excellent reliability and stability. This successful combination of huge sensing range and high sensitivity is attributed to the high stretchability of the SBS “mortar”, the hierarchical architecture and the synergistic effects of sensitive two-dimensional (2D) rGO, and the conductive stretchable one-dimensional (1D) Cu–Ag NW “brick”. In addition, the composites can be used as patterned conductive interconnects for light-emitting diodes.

Nacre-inspired highly stretchable piezoresistive Cu–Ag nanowire/graphene synergistic conductive networks for strain sensors and beyond

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Jinfeng Leng

Author Tools

Chat about Author

Papers

Biomimetic, recyclable, highly stretchable and self-healing conductors enabled by dual reversible bonds

Synergistic enhancement of glass fiber and tetrapod-shaped ZnO whisker on the mechanical and thermal behavior of isotactic polypropylene

Conductive ink composition with self-repair functions, method for preparing conductive ink composition and application thereof

Nacre-inspired highly stretchable piezoresistive Cu–Ag nanowire/graphene synergistic conductive networks for strain sensors and beyond