Regulating Boronic Ester Bonds in Bilayer Hydrogels toward Fabricating Multistimuli-Triggered Actuators,ACS Sustainable Chemistry & Engineering

当前位置： X-MOL 学术 › ACS Sustain. Chem. Eng. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Regulating Boronic Ester Bonds in Bilayer Hydrogels toward Fabricating Multistimuli-Triggered Actuators
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2023-09-14 , DOI: 10.1021/acssuschemeng.3c03518
Chenguang Jiang ₁ , Wenjie Zeng ₁ , Xuexue Ding ₁ , Defeng Wu _{1,

2}

Affiliation

As a member of the dynamic covalent bond family, the boronic ester bond has attracted increasing attention in the fabrication of hydrogels because it can occur in an aqueous system at room temperature. When the hydrogels are applied as a soft sensor, the role of boronic ester bonding is well defined, namely, as a functional unit endowing the system with multistimulus responsiveness. However, this also limits applications of boronic ester bonding in hydrogels. In this work, a heterogeneous hydrogel is developed in which the boronic ester bonding simultaneously acts as structural and responsive units, integrating the actuating and sensing abilities together. The bilayer strategy is applied to give the system network heterogeneity, namely, constructing the physical cross-links of poly(vinyl alcohol) on one side, whereas building dual cross-links, namely, the physical cross-links and the covalent cross-links between carboxymethyl cellulose and poly(vinyl alcohol) together on the other side. Therefore, the as-prepared heterogeneous hydrogels can be used as temperature-triggered and pH-triggered actuators. Moreover, it well retains the strain resistance and temperature resistance effects of the homogeneous hydrogel with boronic ester bonding and can also be used as a flexible sensor monitoring human motions. More application scenarios and working modes for the boronic ester-bonded hydrogels are unlocked.

中文翻译：

调节双层水凝胶中的硼酯键以制造多刺激触发执行器

作为动态共价键家族的一员，硼酸酯键在水凝胶的制造中引起了越来越多的关注，因为它可以在室温下的水性体系中出现。当水凝胶用作软传感器时，硼酸酯键的作用是明确的，即作为赋予系统多刺激响应性的功能单元。然而，这也限制了硼酸酯键在水凝胶中的应用。在这项工作中，开发了一种异质水凝胶，其中硼酸酯键同时充当结构和响应单元，将驱动和传感能力集成在一起。采用双层策略赋予系统网络异质性，即在一侧构建聚乙烯醇的物理交联，而在一侧构建双交联，即，羧甲基纤维素和聚(乙烯醇)之间的物理交联和共价交联在另一侧在一起。因此，所制备的异质水凝胶可用作温度触发和pH触发的执行器。此外，它很好地保留了硼酸酯键合均质水凝胶的抗应变和耐温效果，还可以用作监测人体运动的柔性传感器。硼酸酯键合水凝胶的更多应用场景和工作模式被解锁。它很好地保留了硼酸酯键合均质水凝胶的抗应变和耐温效果，还可以用作监测人体运动的柔性传感器。硼酸酯键合水凝胶的更多应用场景和工作模式被解锁。它很好地保留了硼酸酯键合均质水凝胶的抗应变和耐温效果，还可以用作监测人体运动的柔性传感器。硼酸酯键合水凝胶的更多应用场景和工作模式被解锁。

更新日期：2023-09-14

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南