Strong and Ultra‐Tough Bio‐Based Waterborne Polyurethane Networks with Repairability, Recyclability, and Tunable Multi‐Shape Memory

Macromolecular Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown

Published: March 29, 2025

Abstract Waterborne polyurethanes (WPUs) attract significant attention for their versatility across various fields, yet optimizing both high strength and toughness remains a challenge. This study successfully develops an ultra‐tough bio‐based WPUs by regulating non‐covalent interactions (hydrogen bonds electrostatic interactions) precise cross‐linking. The are synthesized using 2,2‐dimethylolpropionic acid (DMPA), castor oil (CO), poly(tetramethylene ether glycol) (PTMG), isophorone diisocyanate (IPDI), ethylenediamine (EDA) as raw materials, constructing network structure rich in hydrogen interactions. resulting material exhibits outstanding mechanical properties, including tensile (15.91 MPa), Young's modulus (98.36 (107.65 MJ m −3 ), while also demonstrating good repairability, processability, excellent shape memory capabilities. These well‐designed provide effective strategy designing with superior comprehensive performance.

Language: Английский

Mimosa‐Inspired Body Temperature‐Responsive Shape Memory Polymer Networks: High Energy Densities and Multi‐Recyclability

Advanced Science, Journal Year: 2024, Volume and Issue: 11(39)

Published: Aug. 14, 2024

Abstract Inspired by the Mimosa plant, this study herein develops a unique dynamic shape memory polymer (SMP) network capable of transitioning from hard to pliable with heat, featuring reversible actuation, self‐healing, recyclability, and degradability. This material is adept at simulating functionalities artificial muscles for variety tasks, remarkable specific energy density 1.8 J g −1 —≈46 times higher than that human skeletal muscle. As an intelligent manipulator, it demonstrates proficiency in identifying handling items high temperatures. Its suitable rate recovery around body temperature indicates its promising utility as implant addressing acute obstructions. The covalent bonding within structure not only provides excellent resistance solvents but also bestows abilities reprocessing, degradation. These attributes significantly boost practicality environmental sustainability. Anticipated promote advancements sectors biomedical devices, soft robotics, smart actuators, SMP represents forward leap muscles, marking stride toward future adaptive sustainable technology.

Language: Английский

Coordination-enhanced ionic elastomers: Durable, self-healing, and multimodal sensors for wearable electronics and robotics

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 503, P. 158415 - 158415

Published: Dec. 9, 2024

Language: Английский