{"title":"一种新型聚氧亚甲基纤维人造肌肉实现了稳定的驱动行为。","authors":"Weiyao Kong,Xiaowen Zhao,Lin Ye","doi":"10.1002/smll.202502065","DOIUrl":null,"url":null,"abstract":"Due to superior water/chemical resistance, constructing novel polyoxymethylene (POM) fiber-based artificial muscles (AM) is significant for developing advanced flexible actuating devices with high stability. However, strong crystallizing ability and low amorphous content of POM fibers were disadvantageous for them to achieve ideal actuating performance as artificial muscles. Herein, thermoplastic polyurethane elastomer (TPU) was blended with POM to regulate its crystalline behavior widely, while POM/TPU fibers were prepared by melt spinning-hot drawing/heat setting, and a mandrel-coiled POM fiber-based AM was constructed for the first time by further merged/twisted/coiled processes. With increasing fiber draw ratio/TPU content, the increased orientation factors/amorphous content of stretched POM fibers substantially enhanced the actuation properties of muscles. Meanwhile, by controlling merging/twisting/coiling geometries, the actuating properties of muscles are further optimized. Under 14 V actuating voltage/200 load-to-weight ratio, the max shrinkage strain/work capacity of POM/20T-600%f AM achieve 40.23%/34.69 J kg-1, reaching 201%/434% of those of typical mammalian skeletal muscle. Moreover, POM fiber-based AM exhibit superior cyclic actuating stability due to thermal stable oriented crystalline structures of fiber during the actuating process, while in alkali resistance tests, the maximum shrinkage strain retention reach 94.11%, much higher than that of nylon 66 sewing threads AM (53.56%).","PeriodicalId":228,"journal":{"name":"Small","volume":"17 1","pages":"e2502065"},"PeriodicalIF":13.0000,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A Novel Polyoxymethylene Fiber-Based Artificial Muscle Enabled Stable Actuating Behavior.\",\"authors\":\"Weiyao Kong,Xiaowen Zhao,Lin Ye\",\"doi\":\"10.1002/smll.202502065\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Due to superior water/chemical resistance, constructing novel polyoxymethylene (POM) fiber-based artificial muscles (AM) is significant for developing advanced flexible actuating devices with high stability. However, strong crystallizing ability and low amorphous content of POM fibers were disadvantageous for them to achieve ideal actuating performance as artificial muscles. Herein, thermoplastic polyurethane elastomer (TPU) was blended with POM to regulate its crystalline behavior widely, while POM/TPU fibers were prepared by melt spinning-hot drawing/heat setting, and a mandrel-coiled POM fiber-based AM was constructed for the first time by further merged/twisted/coiled processes. With increasing fiber draw ratio/TPU content, the increased orientation factors/amorphous content of stretched POM fibers substantially enhanced the actuation properties of muscles. Meanwhile, by controlling merging/twisting/coiling geometries, the actuating properties of muscles are further optimized. Under 14 V actuating voltage/200 load-to-weight ratio, the max shrinkage strain/work capacity of POM/20T-600%f AM achieve 40.23%/34.69 J kg-1, reaching 201%/434% of those of typical mammalian skeletal muscle. Moreover, POM fiber-based AM exhibit superior cyclic actuating stability due to thermal stable oriented crystalline structures of fiber during the actuating process, while in alkali resistance tests, the maximum shrinkage strain retention reach 94.11%, much higher than that of nylon 66 sewing threads AM (53.56%).\",\"PeriodicalId\":228,\"journal\":{\"name\":\"Small\",\"volume\":\"17 1\",\"pages\":\"e2502065\"},\"PeriodicalIF\":13.0000,\"publicationDate\":\"2025-05-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Small\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1002/smll.202502065\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Small","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/smll.202502065","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
A Novel Polyoxymethylene Fiber-Based Artificial Muscle Enabled Stable Actuating Behavior.
Due to superior water/chemical resistance, constructing novel polyoxymethylene (POM) fiber-based artificial muscles (AM) is significant for developing advanced flexible actuating devices with high stability. However, strong crystallizing ability and low amorphous content of POM fibers were disadvantageous for them to achieve ideal actuating performance as artificial muscles. Herein, thermoplastic polyurethane elastomer (TPU) was blended with POM to regulate its crystalline behavior widely, while POM/TPU fibers were prepared by melt spinning-hot drawing/heat setting, and a mandrel-coiled POM fiber-based AM was constructed for the first time by further merged/twisted/coiled processes. With increasing fiber draw ratio/TPU content, the increased orientation factors/amorphous content of stretched POM fibers substantially enhanced the actuation properties of muscles. Meanwhile, by controlling merging/twisting/coiling geometries, the actuating properties of muscles are further optimized. Under 14 V actuating voltage/200 load-to-weight ratio, the max shrinkage strain/work capacity of POM/20T-600%f AM achieve 40.23%/34.69 J kg-1, reaching 201%/434% of those of typical mammalian skeletal muscle. Moreover, POM fiber-based AM exhibit superior cyclic actuating stability due to thermal stable oriented crystalline structures of fiber during the actuating process, while in alkali resistance tests, the maximum shrinkage strain retention reach 94.11%, much higher than that of nylon 66 sewing threads AM (53.56%).
期刊介绍:
Small serves as an exceptional platform for both experimental and theoretical studies in fundamental and applied interdisciplinary research at the nano- and microscale. The journal offers a compelling mix of peer-reviewed Research Articles, Reviews, Perspectives, and Comments.
With a remarkable 2022 Journal Impact Factor of 13.3 (Journal Citation Reports from Clarivate Analytics, 2023), Small remains among the top multidisciplinary journals, covering a wide range of topics at the interface of materials science, chemistry, physics, engineering, medicine, and biology.
Small's readership includes biochemists, biologists, biomedical scientists, chemists, engineers, information technologists, materials scientists, physicists, and theoreticians alike.