Flexible, high sensitive and radiation-resistant pressure-sensing hydrogel

查看全文 作　　者：Zhiwen [1]Jiang;Yusong [2]Wang;Guoqing [1]Xu;Zhuoni [1]Jiang;Zhiqing [1]Ge;Mozhen [1]Wang;Xuewu [1]Ge

机构地区：[1]CAS Key Laboratory of Soft Matter Chemistry,Department of Polymer Science and Engineering,University of Science and Technology of China,Hefei 230026,China;[2]Hefei National Laboratory for Physical Sciences at the Microscale,University of Science and Technology of China,Hefei 230026,China

出　　处：《Chinese Chemical Letters》索引2022年第33卷第2期,共6页

基　　金：supported by the National Natural Science Foundation of China (Nos.51773189 and 51973205);the Joint Laboratory for University of Science and Technology of China and Yanchang Petroleum (No.ES2060200084);the Fundamental Research Funds for the Central Universities (Nos.WK3450000005,WK3450000006)。 摘　　要：Excellent radiation resistance is a prerequisite for pressure-sensitive hydrogels to be used in high-energy radiation environments. In this work, tannic acid-modified boron nitride nanosheet(BNNS-TA) is first prepared as the radiation-resistant additive by a facile one-step ball milling of hexagonal boron nitride and tannic acid. Then, polyacrylamide(PAAm)-based pressure-sensitive hydrogel doped with BNNS-TA and Fe^(3+)ions is fabricated. The ternary BNNS-TA/Fe^(3+)/PAAm hydrogel exhibits excellent compressive strength(at least four times the compressive strength of unfilled pure PAAm hydrogel), pressure-sensitive performance(gauge factor is up to 1.4), and performance recovery due to the combination of multiple intermolecular interactions, such as covalent crosslinking, hydrogen bonds, and ion coordination interactions.The BNNS-TA/Fe^(3+)/PAAm hydrogel can be made as a pressure sensor installed in the control circuit or attached on the human body to detect human activities accurately. More importantly, the compressive strength and the pressure-sensitive performance of the BNNS-TA/Fe^(3+)/PAAm hydrogel can be maintained after the hydrogel is irradiated by^(60)Co gamma-ray at an absorbed dose of 15 k Gy. As a comparison, the compressive strength of the unfilled PAAm hydrogel is only a quarter of that before irradiation. This work not only reveals a facile method to achieve the preparation of chemically modified BNNS as a promising radiation-resistant additive but also provides a novel strategy for the development of pressure-sensitive hydrogel devices in radiation environments. 关键词：Pressure-sensitive hydrogel POLYACRYLAMIDE Radiation resistance Boron nitride nanosheet Tannic acid Motion detection

相关文献

参考文献（54）
引证文献（1）
耦合文献（0）

参考文献(54)

引证文献(1)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Flexible, high sensitive and radiation-resistant pressure-sensing hydrogel

参考文献(54)

引证文献(1)

用户提示