Speed-Induced Extensibility Elastomers with Good Resilience and High Toughness
文献类型：期刊论文
| 作者 | Chen, Haiming; Koh, J. Justin; Long, Chuanjiang; Liu, Siqi; Shi, Huihui; Min, Jiakang; Zhou, Lili; He, Chaobin |
| 刊名 | MACROMOLECULES
 |
| 出版日期 | 2021 |
| 卷号 | 54期号:7页码:3358-3365 |
| 关键词 | AGGREGATION-INDUCED EMISSION ULTIMATE PROPERTIES IN-SITU DEFORMATION TEMPERATURE MACROMOLECULES MICROSTRUCTURE DEPENDENCE HYDROGELS BEHAVIOR |
| 英文摘要 | The relationship between elongation at break of a material and stretching speed has always been known to be an inversed one. In this work, however, thermoplastic elastomers based on two thermodynamically immiscible components, poly(dimethylsiloxane) (PDMS) and poly(propylene glycol) (PPG), exhibit speed-induced extensibility (SIE). This leads to significant enhancement in Young's modulus, strength, and elongation at break with increased stretching speed. As such, the system is capable of achieving elongation at break of more than 9000% at a 70 min(-1) stretching speed and excellent notch resistance such that the strain and the fracture energy of the notched specimen can reach up to similar to 2000% and similar to 53,600 J/m(2), respectively, surpassing the most reported PDMS-based elastomers. The toughness is also enhanced by 6.4 times merely by increasing the stretching speeds from 2 to 70 min(-1). In addition, the microphase re-separation of PDMS and PPG, together with entropy elasticity of polymer chains, endows the elastomer with a good elastic recovery of similar to 98%. Last, the incorporation of a reversible hydrogen bond also allows the elastomers with autonomous self-healing ability (efficiency similar to 95%). This work opens up the possibility for developing highly stretchable and resilient materials, which can be applied in areas such as artificial muscles. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22028]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.He, CB (corresponding author), ASTAR, Inst Mat Res & Engn, Singapore 138634, Singapore. 2.He, CB (corresponding author), Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117575, Singapore. |
| 推荐引用方式 GB/T 7714 | Chen, Haiming,Koh, J. Justin,Long, Chuanjiang,et al. Speed-Induced Extensibility Elastomers with Good Resilience and High Toughness[J]. MACROMOLECULES,2021,54(7):3358-3365. |
| APA | Chen, Haiming.,Koh, J. Justin.,Long, Chuanjiang.,Liu, Siqi.,Shi, Huihui.,...&He, Chaobin.(2021).Speed-Induced Extensibility Elastomers with Good Resilience and High Toughness.MACROMOLECULES,54(7),3358-3365. |
| MLA | Chen, Haiming,et al."Speed-Induced Extensibility Elastomers with Good Resilience and High Toughness".MACROMOLECULES 54.7(2021):3358-3365. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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