Yunchen Long, Zheng Zhang, Kai Sun, Chong Wang, Ni Zeng, Boxiang Gao, Xinxue Tang, Xiaosi Qi, Runhua Fan
{"title":"hematite@carbon纳米管/聚丙烯酰胺水凝胶复合材料的电磁波吸收性能增强，具有良好的柔韧性和生物相容性","authors":"Yunchen Long, Zheng Zhang, Kai Sun, Chong Wang, Ni Zeng, Boxiang Gao, Xinxue Tang, Xiaosi Qi, Runhua Fan","doi":"10.1007/s42114-023-00749-7","DOIUrl":null,"url":null,"abstract":"<div><p>To expand the application field of electromagnetic wave functional materials based on light, thin, and cost-effective, the integration of the structure and function of electromagnetic wave materials is the key research goal. In this work, hematite(Fe<sub>2</sub>O<sub>3</sub>)@carbon nanotubes (CNTs)/polyacrylamide hydrogel composites with good flexibility and biocompatibility were prepared, and the hydrogel composite exhibited excellent electromagnetic wave (EMW) absorption performance, even with a low load ratio of Fe<sub>2</sub>O<sub>3</sub>@CNTs (2,4,6 wt.%) achieved—the minimum reflection loss (RL<sub>min</sub>) value of 2 wt.% Fe<sub>2</sub>O<sub>3</sub>@CNTs/polyacrylamide (PAM) is − 60.96 dB at 15.87 GHz with a matching thickness is 1.63 mm and a wide effective absorption bandwidth (EAB) of about 3.4 GHz. Furthermore, the RL<sub>min</sub> values of 4 wt.% Fe<sub>2</sub>O<sub>3</sub>@CNTs/PAM reach − 55.65 dB at 14.15 GHz. In addition, when the thickness of the hydrogel composite is between 1.56 and 1.64 mm, almost all electromagnetic waves can be absorbed in the <i>Ku</i> band frequency. Therefore, the impedance matching of the hydrogel composite was optimized, and EMW absorption performance was improved by introducing Fe<sub>2</sub>O<sub>3</sub>@CNTs. This work provides a strategy for designing a structure–function integrated EMW absorber and a convenient method for preparing flexible and biocompatible EMW hydrogels, which will be conducive to the wider application of EMW functional materials in daily life.</p><h3>Graphical Abstract</h3><p>Excellent absorption performance is achieved at a low load ratio of Fe<sub>2</sub>O<sub>3</sub>@CNTs (2 wt.%), successfully designing hydrogel absorbers with good flexibility and biocompatibility</p>\n <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\n </div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"6 5","pages":""},"PeriodicalIF":23.2000,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Enhanced electromagnetic wave absorption performance of hematite@carbon nanotubes/polyacrylamide hydrogel composites with good flexibility and biocompatibility\",\"authors\":\"Yunchen Long, Zheng Zhang, Kai Sun, Chong Wang, Ni Zeng, Boxiang Gao, Xinxue Tang, Xiaosi Qi, Runhua Fan\",\"doi\":\"10.1007/s42114-023-00749-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>To expand the application field of electromagnetic wave functional materials based on light, thin, and cost-effective, the integration of the structure and function of electromagnetic wave materials is the key research goal. In this work, hematite(Fe<sub>2</sub>O<sub>3</sub>)@carbon nanotubes (CNTs)/polyacrylamide hydrogel composites with good flexibility and biocompatibility were prepared, and the hydrogel composite exhibited excellent electromagnetic wave (EMW) absorption performance, even with a low load ratio of Fe<sub>2</sub>O<sub>3</sub>@CNTs (2,4,6 wt.%) achieved—the minimum reflection loss (RL<sub>min</sub>) value of 2 wt.% Fe<sub>2</sub>O<sub>3</sub>@CNTs/polyacrylamide (PAM) is − 60.96 dB at 15.87 GHz with a matching thickness is 1.63 mm and a wide effective absorption bandwidth (EAB) of about 3.4 GHz. Furthermore, the RL<sub>min</sub> values of 4 wt.% Fe<sub>2</sub>O<sub>3</sub>@CNTs/PAM reach − 55.65 dB at 14.15 GHz. In addition, when the thickness of the hydrogel composite is between 1.56 and 1.64 mm, almost all electromagnetic waves can be absorbed in the <i>Ku</i> band frequency. Therefore, the impedance matching of the hydrogel composite was optimized, and EMW absorption performance was improved by introducing Fe<sub>2</sub>O<sub>3</sub>@CNTs. This work provides a strategy for designing a structure–function integrated EMW absorber and a convenient method for preparing flexible and biocompatible EMW hydrogels, which will be conducive to the wider application of EMW functional materials in daily life.</p><h3>Graphical Abstract</h3><p>Excellent absorption performance is achieved at a low load ratio of Fe<sub>2</sub>O<sub>3</sub>@CNTs (2 wt.%), successfully designing hydrogel absorbers with good flexibility and biocompatibility</p>\\n <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\\n </div>\",\"PeriodicalId\":7220,\"journal\":{\"name\":\"Advanced Composites and Hybrid Materials\",\"volume\":\"6 5\",\"pages\":\"\"},\"PeriodicalIF\":23.2000,\"publicationDate\":\"2023-09-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Composites and Hybrid Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s42114-023-00749-7\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, COMPOSITES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Composites and Hybrid Materials","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s42114-023-00749-7","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COMPOSITES","Score":null,"Total":0}
Enhanced electromagnetic wave absorption performance of hematite@carbon nanotubes/polyacrylamide hydrogel composites with good flexibility and biocompatibility
To expand the application field of electromagnetic wave functional materials based on light, thin, and cost-effective, the integration of the structure and function of electromagnetic wave materials is the key research goal. In this work, hematite(Fe2O3)@carbon nanotubes (CNTs)/polyacrylamide hydrogel composites with good flexibility and biocompatibility were prepared, and the hydrogel composite exhibited excellent electromagnetic wave (EMW) absorption performance, even with a low load ratio of Fe2O3@CNTs (2,4,6 wt.%) achieved—the minimum reflection loss (RLmin) value of 2 wt.% Fe2O3@CNTs/polyacrylamide (PAM) is − 60.96 dB at 15.87 GHz with a matching thickness is 1.63 mm and a wide effective absorption bandwidth (EAB) of about 3.4 GHz. Furthermore, the RLmin values of 4 wt.% Fe2O3@CNTs/PAM reach − 55.65 dB at 14.15 GHz. In addition, when the thickness of the hydrogel composite is between 1.56 and 1.64 mm, almost all electromagnetic waves can be absorbed in the Ku band frequency. Therefore, the impedance matching of the hydrogel composite was optimized, and EMW absorption performance was improved by introducing Fe2O3@CNTs. This work provides a strategy for designing a structure–function integrated EMW absorber and a convenient method for preparing flexible and biocompatible EMW hydrogels, which will be conducive to the wider application of EMW functional materials in daily life.
Graphical Abstract
Excellent absorption performance is achieved at a low load ratio of Fe2O3@CNTs (2 wt.%), successfully designing hydrogel absorbers with good flexibility and biocompatibility
期刊介绍：
Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field.
The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest.
Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials.
Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.
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