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Bioinspired design of strong, tough, and thermally stable polymeric materials via nanoconfinement
journal contribution
posted on 2018-09-25, 00:00 authored by Pingan Song, Jinfeng Dai, Guorong Chen, Youming Yu, Zhengping Fang, Weiwei LeiWeiwei Lei, Shenyuan Fu, Hao Wang, Zhi-Gang ChenThe combination of high strength, great toughness, and high heat resistance for polymeric materials is a vital factor for their practical applications. Unfortunately, until now it has remained a major challenge to achieve this performance portfolio because the mechanisms of strength and toughness are mutually exclusive. In the natural world, spider silk features the combination of high strength, great toughness, and excellent thermal stability, which are governed by the nanoconfinement of hydrogen-bonded β-sheets. Here, we report a facile bioinspired methodology for fabricating advanced polymer composite films with a high tensile strength of 152.8 MPa, a high stiffness of 4.35 GPa, and a tensile toughness of 30.3 MJ/m3 in addition to high thermal stability (69 °C higher than that of the polymer matrix) only by adding 2.0 wt % of artificial β-sheets. The mechanical and thermostable performance portfolio is superior to that of its counterparts developed to date because of the nanoconfinement and hydrogen-bond cross-linking effects of artificial β-sheets. Our study offers a facile biomimetic strategy for the design of integrated mechanically robust and thermostable polymer materials, which hold promise for many applications in electrical devices and tissue engineering fields.
History
Journal
ACS nanoVolume
12Issue
9Pagination
9266 - 9278Publisher
American Chemical SocietyLocation
Washington, D.C.Publisher DOI
eISSN
1936-086XLanguage
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2018, American Chemical SocietyUsage metrics
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nanoconfinementbioinspired designmechanical performancethermal stabilitypoly(vinyl alcohol)Science & TechnologyPhysical SciencesTechnologyChemistry, MultidisciplinaryChemistry, PhysicalNanoscience & NanotechnologyMaterials Science, MultidisciplinaryChemistryScience & Technology - Other TopicsMaterials ScienceGRAPHENE QUANTUM DOTSPOLY(VINYL ALCOHOL) NANOCOMPOSITESMECHANICAL-PROPERTIESARTIFICIAL NACRECARBON NANOTUBESOXIDEREINFORCEMENTSTRENGTHGRAPHITESTRATEGY
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