2023-08-23 ワシントン大学セントルイス校
◆この新しい材料は、3Dプリントで作成することができ、既存の材料に追加して耐久性を向上させる方法も提供しており、例えば自動車部品の耐久性を向上させるためのプラスチック添加剤として活用できます。この新しい材料は単純で適応性があり、異なるプラスチックの特性を向上させるためにさまざまなハイドロゲルと組み合わせることができます。
◆この研究では、結晶ドメイン強化スライド リング ハイドロゲル（CrysDoS-gels）を3Dプリントして応力センサーとして利用する可能性を示しました。
＜関連情報＞
- https://source.wustl.edu/2023/08/chemists-develop-unique-design-for-tough-but-stretchable-gels/
- https://www.sciencedirect.com/science/article/abs/pii/S2451929423003716?dgcid=author
ハイドロゲルの発見と3Dプリンティングを加速する、強化されたダブルスレッド・スライドリングネットワーク Reinforced double-threaded slide-ring networks for accelerated hydrogel discovery and 3D printing
Miao Tang, Dan Zheng, Jayanta Samanta, Esther H.R. Tsai, Huibin Qiu, Jacquelyne A. Read, Chenfeng Ke
Chem Published: August 23, 2023
DOI:https://doi.org/10.1016/j.chempr.2023.07.020
The bigger picture
Stretchable slide-ring hydrogels are typically soft because of an elasticity-toughness trade-off. Herein, we have developed crystalline-domain-reinforced double-threaded slide-ring networks by introducing a pro-slide-ring crosslinker synthesized through the self-assembly of γ-cyclodextrins and telechelic polyethylene glycols. We obtained 3D-printable rigid and tough slide-ring hydrogels. The modular reactivity of the pro-slide-ring crosslinker enables a high-throughput synthesis, resulting in a library of slide-ring hydrogels with varying mechanical properties. We illustrate the structure-property relationships of these hydrogels by using data science tools, leading to the discovery of superior hydrogels. We fabricated a high-performance 3D-printed stress sensor to show the potential of this design. Introducing a modular pro-slide-ring crosslinker with a clearly illustrated structure-property relationship greatly accelerates the discovery of mechanically robust slide-ring-based soft materials.
Summary
Traditionally, slide-ring gels are stretchable but soft as a result of an elasticity-stretchability trade-off. Herein, we introduce a new approach to breaking this trade-off and creating reinforced slide-ring networks with mobile crosslinkers. Our approach involves the construction of a polyethylene glycol double-threaded γ-cyclodextrin-based pro-slide-ring crosslinker that serves as a modular component for 3D printing and copolymerization. The resulting crystalline-domain-reinforced slide-ring hydrogels, or CrysDoS-gels, exhibit both high elasticity and high stretchability. The modular synthesis allows for high-throughput synthesis of CrysDoS-gels, generating a large amount of data for structure-property analysis. By employing data science techniques, such as machine learning and linear regression, not only were we able to identify which chemical components influence the mechanical properties of CrysDoS-gels, but this analysis also aided in the discovery of better-performing CrysDoS-gels. Finally, we demonstrate the potential application of the newly discovered CrysDoS-gels as sensing devices by 3D printing them as stress sensors with high sensitivity and a broad detection range.
