{"title":"通过动态物理键和碳纳米管构建的多功能坚固双网络水凝胶可用作应变和压力传感器","authors":"Yuan Zhao, Huixia Feng, Qiong Shang, Linhong Jiao","doi":"10.1007/s10971-024-06475-w","DOIUrl":null,"url":null,"abstract":"<div><p>Carbon-based hydrogels have emerged as a promising material for wearable strain and pressure sensors due to their excellent conductive and mechanical flexibility. However, some shortcomings such as limited stretchability and susceptibility to phase separation have led to a narrow range of applications. In this study, a GPEC hydrogel was prepared by incorporating metal ions and oxidized multi-walled carbon nanotubes (oxCNTs) into a double-network (DN) hydrogel consisting of gum arabic (GA) and a copolymer polymerized by acrylamide (AM), acrylic acid (AA) and N-methylolacrylamide (NMAM). The uniformly distributed oxCNTs and metal ions formed a three-dimensional (3D) structure of the hydrogel through a large amount of metal complex bonds and hydrogen bonds. The strong interaction improved the mechanical properties of the hydrogels, with an elongation at break of 1957% and a strength at break of 915 kPa. Furthermore, the hydrogels exhibited excellent self-adhesive and self-healing properties. The hydrogel also exhibits high conductivity due to the embedded metal ions and oxCNTs forming a conductive network. The as-prepared strain sensor revealed ultra-high sensitivity (GF = 3.08) and fast response (72 ms). Moreover, the GPEC hydrogel exhibits high pressure sensitivity (2.27 kPa<sup>−1</sup> in the range of 0–10 kPa and 0.08 kPa<sup>−1</sup> in the range of 20–80 kPa) when assembled into a pressure sensor. Consequently, the GPEC hydrogel sensor could be used to monitor the full range of human motion and could be incorporated into pressure sensing devices for handwriting recognition.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"111 3","pages":"834 - 849"},"PeriodicalIF":2.3000,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Multifunctional robust dual network hydrogels constructed via dynamic physical bonds and carbon nanotubes for use as strain and pressure sensors\",\"authors\":\"Yuan Zhao, Huixia Feng, Qiong Shang, Linhong Jiao\",\"doi\":\"10.1007/s10971-024-06475-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Carbon-based hydrogels have emerged as a promising material for wearable strain and pressure sensors due to their excellent conductive and mechanical flexibility. However, some shortcomings such as limited stretchability and susceptibility to phase separation have led to a narrow range of applications. In this study, a GPEC hydrogel was prepared by incorporating metal ions and oxidized multi-walled carbon nanotubes (oxCNTs) into a double-network (DN) hydrogel consisting of gum arabic (GA) and a copolymer polymerized by acrylamide (AM), acrylic acid (AA) and N-methylolacrylamide (NMAM). The uniformly distributed oxCNTs and metal ions formed a three-dimensional (3D) structure of the hydrogel through a large amount of metal complex bonds and hydrogen bonds. The strong interaction improved the mechanical properties of the hydrogels, with an elongation at break of 1957% and a strength at break of 915 kPa. Furthermore, the hydrogels exhibited excellent self-adhesive and self-healing properties. The hydrogel also exhibits high conductivity due to the embedded metal ions and oxCNTs forming a conductive network. The as-prepared strain sensor revealed ultra-high sensitivity (GF = 3.08) and fast response (72 ms). Moreover, the GPEC hydrogel exhibits high pressure sensitivity (2.27 kPa<sup>−1</sup> in the range of 0–10 kPa and 0.08 kPa<sup>−1</sup> in the range of 20–80 kPa) when assembled into a pressure sensor. Consequently, the GPEC hydrogel sensor could be used to monitor the full range of human motion and could be incorporated into pressure sensing devices for handwriting recognition.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":664,\"journal\":{\"name\":\"Journal of Sol-Gel Science and Technology\",\"volume\":\"111 3\",\"pages\":\"834 - 849\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2024-07-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Sol-Gel Science and Technology\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10971-024-06475-w\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sol-Gel Science and Technology","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10971-024-06475-w","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Multifunctional robust dual network hydrogels constructed via dynamic physical bonds and carbon nanotubes for use as strain and pressure sensors
Carbon-based hydrogels have emerged as a promising material for wearable strain and pressure sensors due to their excellent conductive and mechanical flexibility. However, some shortcomings such as limited stretchability and susceptibility to phase separation have led to a narrow range of applications. In this study, a GPEC hydrogel was prepared by incorporating metal ions and oxidized multi-walled carbon nanotubes (oxCNTs) into a double-network (DN) hydrogel consisting of gum arabic (GA) and a copolymer polymerized by acrylamide (AM), acrylic acid (AA) and N-methylolacrylamide (NMAM). The uniformly distributed oxCNTs and metal ions formed a three-dimensional (3D) structure of the hydrogel through a large amount of metal complex bonds and hydrogen bonds. The strong interaction improved the mechanical properties of the hydrogels, with an elongation at break of 1957% and a strength at break of 915 kPa. Furthermore, the hydrogels exhibited excellent self-adhesive and self-healing properties. The hydrogel also exhibits high conductivity due to the embedded metal ions and oxCNTs forming a conductive network. The as-prepared strain sensor revealed ultra-high sensitivity (GF = 3.08) and fast response (72 ms). Moreover, the GPEC hydrogel exhibits high pressure sensitivity (2.27 kPa−1 in the range of 0–10 kPa and 0.08 kPa−1 in the range of 20–80 kPa) when assembled into a pressure sensor. Consequently, the GPEC hydrogel sensor could be used to monitor the full range of human motion and could be incorporated into pressure sensing devices for handwriting recognition.
期刊介绍:
The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.