Bioinspired strategy to reinforce PVA with improved toughness and thermal properties via hydrogen-bond self-assembly
Article
Article Title | Bioinspired strategy to reinforce PVA with improved toughness and thermal properties via hydrogen-bond self-assembly |
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ERA Journal ID | 200100 |
Article Category | Article |
Authors | Song, Ping'An (Author), Xu, Zhiguang (Author) and Guo, Qipeng (Author) |
Journal Title | ACS Macro Letters |
Journal Citation | 2 (12), pp. 1100-1104 |
Number of Pages | 5 |
Year | 2013 |
Place of Publication | United States |
ISSN | 2161-1653 |
Digital Object Identifier (DOI) | https://doi.org/10.1021/mz4005265 |
Web Address (URL) | https://pubs.acs.org/doi/10.1021/mz4005265 |
Abstract | Despite the high strength and stiffness of polymer nanocomposites, they usually display lower deformability and toughness relative to their matrices. Spider silk features exceptionally high stiffness and toughness via the hierarchical architecture based on hydrogen-bond (H-bond) assembly. Inspired by this intriguing phenomenon, we here exploit melamine (MA) to reinforce poly(vinyl alcohol) (PVA) via H-bond self-assembly at a molecular level. Our results have shown that due to the formation of physical cross-link network based on H-bond assembly between MA and PVA, yield strength, Young's modulus, extensibility, and toughness of PVA are improved by 22, 25, 144, and 200% with 1.0 wt % MA, respectively. Moreover, presence of MA can enhance the thermal stability of PVA to a great extent, even exceeding some nanofillers (e.g., graphene). This work provides a facile method to improve the mechanical properties of polymers via H-bond self-assembly. |
Keywords | polymer nanocomposites; spider silk; hydrogen-bond assembly |
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 | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q413q/bioinspired-strategy-to-reinforce-pva-with-improved-toughness-and-thermal-properties-via-hydrogen-bond-self-assembly
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