Non-covalent and covalent-synergistical-interaction assembled GO self-supporting membrane with excellent alignment for ultrahigh H2 barrier applications
Article
Liu, Cong, Li, Hefeng, Zhu, Jiabao, Huan, Xianhua, Xu, Ke, Geng, Hongbo, Guo, Xiaodong, Ge, Lei, Jia, Xiaolong, Yang, Xiaoping and Wang, Hao. 2024. "Non-covalent and covalent-synergistical-interaction assembled GO self-supporting membrane with excellent alignment for ultrahigh H2 barrier applications." Composites Part B: Engineering. 283. https://doi.org/10.1016/j.compositesb.2024.111652
| Article Title | Non-covalent and covalent-synergistical-interaction assembled GO self-supporting membrane with excellent alignment for ultrahigh H2 barrier applications |
|---|---|
| ERA Journal ID | 4883 |
| Article Category | Article |
| Authors | Liu, Cong, Li, Hefeng, Zhu, Jiabao, Huan, Xianhua, Xu, Ke, Geng, Hongbo, Guo, Xiaodong, Ge, Lei, Jia, Xiaolong, Yang, Xiaoping and Wang, Hao |
| Journal Title | Composites Part B: Engineering |
| Journal Citation | 283 |
| Article Number | 111652 |
| Number of Pages | 10 |
| Year | 2024 |
| Publisher | Elsevier |
| Place of Publication | United Kingdom |
| ISSN | 1359-8368 |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.compositesb.2024.111652 |
| Web Address (URL) | https://www.sciencedirect.com/science/article/abs/pii/S1359836824004645 |
| Abstract | The emerging graphene oxide membranes (GOm) showcase superiority in molecule barrier applications, yet their hydrogen (H2) barrier performance is still less than ideal due to the insufficient control of GOm assembly architecture. Here, molecular patch engineering, in which amino rich polyethyleneimine (PEI) is controllably introduced into the GO system, is proposed to construct a highly aligned self-supporting PGO membrane (PGOm) for exceptional H2 barrier performance. Based on the non-covalent and covalent interactions between GO nanosheets and PEI, the assembly behavior of GO nanosheets from the liquid phase to the solid phase is efficiently optimized in both extension and alignment synergistically, resulting in the superior alignments of PGOm with a Herman's orientation factor as high as 0.86. Owing to the excellent alignments, the hydrogen permeability (PH2) of PGOm is substantially reduced to a mere 2.28 cm3 cm/(cm2·s·Pa)·10−15 even at a high temperature of 80 °C, representing a remarkable three-order-of-magnitude decrease compared to GOm. Additionally, at 25 °C, the PH2 of PGOm-enhanced epoxy sandwich composites is minimized to 1.2 cm3 cm/(cm2·s·Pa)·10−15, approximately 50 times lower than that of pure EP. This highlights the significant potential of PGOm in enhancing the gas tightness of composite pressure vessels. |
| Keywords | Alignment behavior |
| Contains Sensitive Content | Does not contain sensitive content |
| ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
| Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
| Byline Affiliations | Beijing University of Chemical Technology, China |
| Hefei University of Technology, China | |
| Inner Mongolia Aerospace Hong Gang Machinery, China | |
| Centre for Future Materials |
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