Jiahao Kang, Qiangli Zhao, Min Mao, Qiang Mu, Xiaoliang Zhao, Xinhai He, Jianwei Li
{"title":"壳聚糖/酯化纤维素多网络结构湿压传感柔性导电薄膜和浸渍纸","authors":"Jiahao Kang, Qiangli Zhao, Min Mao, Qiang Mu, Xiaoliang Zhao, Xinhai He, Jianwei Li","doi":"10.1007/s10570-024-06237-5","DOIUrl":null,"url":null,"abstract":"<div><p>Electroactive biomass materials based on chitosan (CS), cellulose, etc. have great potential for applications in non-contact switches, smart wearable devices, environmental monitoring, etc. However, due to low electroactivity and susceptibility to overhydration, it is necessary to add carbon materials, synthetic conductive polymers or metal oxides, etc. and introduce numerous chemical crosslinking, which makes them face the problems of poor filler-matrix dispersion, high preparation cost and environmental pollution. In this study, citrate-modified cellulose (EMC) was prepared and introduced into the CS matrix, and a multi network structure with hydrogen bonding, chemical crosslinking and ionic complexation crosslinking was constructed by adding chemical crosslinking and Cu<sup>2+</sup> ion complexation. Flexible conductive composite film (CS-EMC-Cu film) and paper (CS-EMC-Cu impregnated paper) were prepared. The results showed that the incorporation of Cu<sup>2+</sup> and EMC effectively improved the flexibility (elongation at break of 106%), water resistance and surface hydrophilicity of the films. The composite conductive film (conductivity of 0.277 S/m) has good wet-responsive deformation properties, can be used as a non-contact smart switch, and has good humidity (0.745 RH<sup>−1</sup>) and pressure sensing properties, but the durability still needs to be improved. The CS-EMC-Cu impregnated conductive paper (conductivity of 0.0737 S/m) has good flexibility (elongation at break of 7.9%) and water resistance, and is capable of lighting a light bulb. Its brightness is enhanced with humidity and has good wet response characteristics. This flexible conductive film and paper are prepared in an environmentally friendly way, which provides ideas for the preparation and design of biomass-based flexible sensors, and is also of great significance for the high value-added utilization of biomass materials.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"31 18","pages":"11065 - 11085"},"PeriodicalIF":4.9000,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Flexible electrically conductive films and impregnated papers with chitosan/esterified cellulose multi-network structure with humidity and pressure sensing\",\"authors\":\"Jiahao Kang, Qiangli Zhao, Min Mao, Qiang Mu, Xiaoliang Zhao, Xinhai He, Jianwei Li\",\"doi\":\"10.1007/s10570-024-06237-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Electroactive biomass materials based on chitosan (CS), cellulose, etc. have great potential for applications in non-contact switches, smart wearable devices, environmental monitoring, etc. However, due to low electroactivity and susceptibility to overhydration, it is necessary to add carbon materials, synthetic conductive polymers or metal oxides, etc. and introduce numerous chemical crosslinking, which makes them face the problems of poor filler-matrix dispersion, high preparation cost and environmental pollution. In this study, citrate-modified cellulose (EMC) was prepared and introduced into the CS matrix, and a multi network structure with hydrogen bonding, chemical crosslinking and ionic complexation crosslinking was constructed by adding chemical crosslinking and Cu<sup>2+</sup> ion complexation. Flexible conductive composite film (CS-EMC-Cu film) and paper (CS-EMC-Cu impregnated paper) were prepared. The results showed that the incorporation of Cu<sup>2+</sup> and EMC effectively improved the flexibility (elongation at break of 106%), water resistance and surface hydrophilicity of the films. The composite conductive film (conductivity of 0.277 S/m) has good wet-responsive deformation properties, can be used as a non-contact smart switch, and has good humidity (0.745 RH<sup>−1</sup>) and pressure sensing properties, but the durability still needs to be improved. The CS-EMC-Cu impregnated conductive paper (conductivity of 0.0737 S/m) has good flexibility (elongation at break of 7.9%) and water resistance, and is capable of lighting a light bulb. Its brightness is enhanced with humidity and has good wet response characteristics. This flexible conductive film and paper are prepared in an environmentally friendly way, which provides ideas for the preparation and design of biomass-based flexible sensors, and is also of great significance for the high value-added utilization of biomass materials.</p></div>\",\"PeriodicalId\":511,\"journal\":{\"name\":\"Cellulose\",\"volume\":\"31 18\",\"pages\":\"11065 - 11085\"},\"PeriodicalIF\":4.9000,\"publicationDate\":\"2024-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Cellulose\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10570-024-06237-5\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, PAPER & WOOD\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cellulose","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10570-024-06237-5","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, PAPER & WOOD","Score":null,"Total":0}
Flexible electrically conductive films and impregnated papers with chitosan/esterified cellulose multi-network structure with humidity and pressure sensing
Electroactive biomass materials based on chitosan (CS), cellulose, etc. have great potential for applications in non-contact switches, smart wearable devices, environmental monitoring, etc. However, due to low electroactivity and susceptibility to overhydration, it is necessary to add carbon materials, synthetic conductive polymers or metal oxides, etc. and introduce numerous chemical crosslinking, which makes them face the problems of poor filler-matrix dispersion, high preparation cost and environmental pollution. In this study, citrate-modified cellulose (EMC) was prepared and introduced into the CS matrix, and a multi network structure with hydrogen bonding, chemical crosslinking and ionic complexation crosslinking was constructed by adding chemical crosslinking and Cu2+ ion complexation. Flexible conductive composite film (CS-EMC-Cu film) and paper (CS-EMC-Cu impregnated paper) were prepared. The results showed that the incorporation of Cu2+ and EMC effectively improved the flexibility (elongation at break of 106%), water resistance and surface hydrophilicity of the films. The composite conductive film (conductivity of 0.277 S/m) has good wet-responsive deformation properties, can be used as a non-contact smart switch, and has good humidity (0.745 RH−1) and pressure sensing properties, but the durability still needs to be improved. The CS-EMC-Cu impregnated conductive paper (conductivity of 0.0737 S/m) has good flexibility (elongation at break of 7.9%) and water resistance, and is capable of lighting a light bulb. Its brightness is enhanced with humidity and has good wet response characteristics. This flexible conductive film and paper are prepared in an environmentally friendly way, which provides ideas for the preparation and design of biomass-based flexible sensors, and is also of great significance for the high value-added utilization of biomass materials.
期刊介绍：
Cellulose is an international journal devoted to the dissemination of research and scientific and technological progress in the field of cellulose and related naturally occurring polymers. The journal is concerned with the pure and applied science of cellulose and related materials, and also with the development of relevant new technologies. This includes the chemistry, biochemistry, physics and materials science of cellulose and its sources, including wood and other biomass resources, and their derivatives. Coverage extends to the conversion of these polymers and resources into manufactured goods, such as pulp, paper, textiles, and manufactured as well natural fibers, and to the chemistry of materials used in their processing. Cellulose publishes review articles, research papers, and technical notes.
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