Jing Tu, Bo Chen, Xinhong Xiong, Weiming Xu and Jiaxi Cui
{"title":"基于硼酸盐键的“刚柔”动态聚合物","authors":"Jing Tu, Bo Chen, Xinhong Xiong, Weiming Xu and Jiaxi Cui","doi":"10.1039/D4TA07736A","DOIUrl":null,"url":null,"abstract":"<p >Strain-dependent materials, such as non-Newtonian fluids and solid–liquid dynamic polymers, are soft in the normal state and exhibit significant stiffness only at high strain rates. No material has been reported to date to maintain hardness under normal conditions (>0.17% s<small><sup>−1</sup></small>) and exhibit flexibility under slow load. Herein, this unique mechanical property is realized in polymer networks constructed by dense dynamic borate bonds and rigid benzene/azine ring structures. The polymer exists in a “rigid solid” state under normal conditions and in a “flexible solid” state under extremely slow strain. This unique mechanical property is derived from the slow relaxation behavior of the borate bonds in the rigid networks. The tensile strength of the rigid-flexible polymers could reach up to 3.9 MPa and Young's modulus was about 85 MPa, which far exceeds those of previously reported strain-dependent materials. In addition, the polymer exhibits some special features (including self-healing, room-temperature welding, and shape editing). The special dynamic material is considered to have great application prospects in the field of adaptive equipment.</p>","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":" 6","pages":" 4207-4213"},"PeriodicalIF":9.5000,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Rigid-flexible dynamic polymers based on borate bonds†\",\"authors\":\"Jing Tu, Bo Chen, Xinhong Xiong, Weiming Xu and Jiaxi Cui\",\"doi\":\"10.1039/D4TA07736A\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Strain-dependent materials, such as non-Newtonian fluids and solid–liquid dynamic polymers, are soft in the normal state and exhibit significant stiffness only at high strain rates. No material has been reported to date to maintain hardness under normal conditions (>0.17% s<small><sup>−1</sup></small>) and exhibit flexibility under slow load. Herein, this unique mechanical property is realized in polymer networks constructed by dense dynamic borate bonds and rigid benzene/azine ring structures. The polymer exists in a “rigid solid” state under normal conditions and in a “flexible solid” state under extremely slow strain. This unique mechanical property is derived from the slow relaxation behavior of the borate bonds in the rigid networks. The tensile strength of the rigid-flexible polymers could reach up to 3.9 MPa and Young's modulus was about 85 MPa, which far exceeds those of previously reported strain-dependent materials. In addition, the polymer exhibits some special features (including self-healing, room-temperature welding, and shape editing). The special dynamic material is considered to have great application prospects in the field of adaptive equipment.</p>\",\"PeriodicalId\":82,\"journal\":{\"name\":\"Journal of Materials Chemistry A\",\"volume\":\" 6\",\"pages\":\" 4207-4213\"},\"PeriodicalIF\":9.5000,\"publicationDate\":\"2024-12-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Chemistry A\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2025/ta/d4ta07736a\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Chemistry A","FirstCategoryId":"88","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/ta/d4ta07736a","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Rigid-flexible dynamic polymers based on borate bonds†
Strain-dependent materials, such as non-Newtonian fluids and solid–liquid dynamic polymers, are soft in the normal state and exhibit significant stiffness only at high strain rates. No material has been reported to date to maintain hardness under normal conditions (>0.17% s−1) and exhibit flexibility under slow load. Herein, this unique mechanical property is realized in polymer networks constructed by dense dynamic borate bonds and rigid benzene/azine ring structures. The polymer exists in a “rigid solid” state under normal conditions and in a “flexible solid” state under extremely slow strain. This unique mechanical property is derived from the slow relaxation behavior of the borate bonds in the rigid networks. The tensile strength of the rigid-flexible polymers could reach up to 3.9 MPa and Young's modulus was about 85 MPa, which far exceeds those of previously reported strain-dependent materials. In addition, the polymer exhibits some special features (including self-healing, room-temperature welding, and shape editing). The special dynamic material is considered to have great application prospects in the field of adaptive equipment.
期刊介绍:
The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.