Bio-inspired hydrogen-bond cross-link strategy toward strong and tough polymeric materials
Article
Article Title | Bio-inspired hydrogen-bond cross-link strategy toward strong and tough polymeric materials |
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ERA Journal ID | 1687 |
Article Category | Article |
Authors | Song, Pingan (Author), Xu, Zhiguang (Author), Lu, Yuan (Author) and Guo, Qipeng (Author) |
Journal Title | Macromolecules |
Journal Citation | 48 (12), pp. 3957-3964 |
Number of Pages | 8 |
Year | 2015 |
Publisher | American Chemical Society |
Place of Publication | United States |
ISSN | 0024-9297 |
1520-5835 | |
Digital Object Identifier (DOI) | https://doi.org/10.1021/acs.macromol.5b00673 |
Web Address (URL) | http://pubs.acs.org/doi/abs/10.1021/acs.macromol.5b00673 |
Abstract | It remains a huge challenge to create advanced polymeric materials combining high strength, great toughness, and biodegradability so far. Despite enhanced strength and stiffness, biomimetic materials and polymer nanocomposites suffer notably reduced extensibility and toughness when compared to polymer bulk. Silk displays superior strength and toughness via hydrogen bonds (H-bonds) assembly, while cuticles of mussels gain high hardness and toughness via metal complexation cross-linking. Here, we propose a H-bonds cross-linking strategy that can simultaneously strikingly enhance strength, modulus, toughness, and hardness relative to polymer bulk. The H-bond cross-linked poly(vinyl alcohol) exhibits high yield strength (140 MPa), reduced modulus (22.5 GPa) in nanoindention tests, hardness (0.5 GPa), and great extensibility (40%). More importantly, there exist semiquantitive linear relationships between the number of effective H-bond and macroscale properties. This work suggests a promising methodology of designing advanced materials with exceptional mechanical by adding low amounts (1.0 wt %) of small molecules multiamines serving as H-bond cross-linkers. |
Keywords | Hydrogen; Biodegradation; polymers; nanocomposites |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 340399. Macromolecular and materials chemistry not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Zhejiang A & F University, China |
Deakin University | |
Oak Ridge National Laboratory, United States | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4520/bio-inspired-hydrogen-bond-cross-link-strategy-toward-strong-and-tough-polymeric-materials
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