Antiswellable, Conductive, and Recyclable Coacervate Polyacrylamide/Tannic Acid Composite Hydrogel for Underwater Wearable Sensors,ACS Applied Polymer Materials

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Antiswellable, Conductive, and Recyclable Coacervate Polyacrylamide/Tannic Acid Composite Hydrogel for Underwater Wearable Sensors
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2023-12-19 , DOI: 10.1021/acsapm.3c02433
Zuwu Tang ₁ , Xinxing Lin ₁ , Meiqiong Yu _{1,

2,

3} , Ajoy Kanti Mondal ₄ , Liulian Huang _{2,

3} , Lihui Chen _{2,

3} , Hui Wu _{2,

3}

Affiliation

Hydrogel-based sensors have attracted increasing attention as fascinating materials for various applications in biomedicine and bioelectronics. However, the application of strain sensors underwater remains a great challenge due to the swelling of hydrogels in an aqueous environment. Herein, we report a coacervate conductive polyacrylamide/tannic acid (PAM/TA) composite hydrogel with strong antiswellable properties. The PAM/TA composite hydrogel exhibits a good electrical performance, where the conductivity is found to be 2.7 × 10^–4 S/cm, which is stable during recycling, with an excellent stretchability of 1000% at a tensile strength of 1.5 MPa. The composite hydrogel shows excellent biocompatibility and antiswellable behavior and maintains long-term stability underwater to monitor human movements. In addition, the environmentally friendly composite hydrogel can be recycled repeatedly. The PAM/TA composite hydrogel with excellent antiswelling and stability, good electrical performance, and remarkable stretchability has great potential for the applications as underwater wearable sensors.

中文翻译：

用于水下可穿戴传感器的抗膨胀、导电和可回收凝聚层聚丙烯酰胺/单宁酸复合水凝胶

基于水凝胶的传感器作为生物医学和生物电子学领域各种应用的迷人材料而受到越来越多的关注。然而，由于水凝胶在水环境中的膨胀，应变传感器在水下的应用仍然是一个巨大的挑战。在此，我们报道了一种具有强抗溶胀性能的凝聚层导电聚丙烯酰胺/单宁酸（PAM/TA）复合水凝胶。PAM/TA复合水凝胶具有良好的电性能，电导率为2.7×10-4S/cm，在回收过程中保持^稳定，在拉伸强度为1.5MPa时具有1000%的优异拉伸性能。该复合水凝胶表现出优异的生物相容性和抗膨胀行为，并在水下保持长期稳定性以监测人体运动。此外，环保的复合水凝胶可以反复回收利用。PAM/TA复合水凝胶具有优异的抗溶胀性和稳定性、良好的电性能和显着的拉伸性能，在水下可穿戴传感器方面具有巨大的应用潜力。

更新日期：2023-12-19

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