Synchronous modification of ZIF-67 with cyclomatrix polyphosphazene coating for efficient flame retardancy and mechanical reinforcement of epoxy resin
Article
Song, Xiaoning, Li, Qianlong, Han, Zhengde, Hou, Boyou, Pan, Ye-Tang, Geng, Zhishuai, Zhang, Jing, Ibarra, Laia Haurie and Yang, Rongjie. 2024. "Synchronous modification of ZIF-67 with cyclomatrix polyphosphazene coating for efficient flame retardancy and mechanical reinforcement of epoxy resin." Journal of Colloid and Interface Science. 667, pp. 223-236. https://doi.org/10.1016/j.jcis.2024.04.088
| Article Title | Synchronous modification of ZIF-67 with cyclomatrix polyphosphazene coating for efficient flame retardancy and mechanical reinforcement of epoxy resin |
|---|---|
| ERA Journal ID | 1454 |
| Article Category | Article |
| Authors | Song, Xiaoning, Li, Qianlong, Han, Zhengde, Hou, Boyou, Pan, Ye-Tang, Geng, Zhishuai, Zhang, Jing, Ibarra, Laia Haurie and Yang, Rongjie |
| Journal Title | Journal of Colloid and Interface Science |
| Journal Citation | 667, pp. 223-236 |
| Number of Pages | 14 |
| Year | 2024 |
| Publisher | Elsevier |
| Place of Publication | United States |
| ISSN | 0021-9797 |
| 1095-7103 | |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jcis.2024.04.088 |
| Web Address (URL) | https://www.sciencedirect.com/science/article/abs/pii/S0021979724008075 |
| Abstract | Cyclomatrix polyphosphazenes have attracted widespread attention in the field of polymer flame retardancy. Nevertheless, the optimal manifestation of their distinctive structural attributes and flame-retardant properties necessitates a judicious selection of condensation monomers and synergistic templates during the fabrication of polyphosphazene flame retardants. In our previous studies, it was discovered that when ZIF-67 is functionalized with polyphosphazene, the by-product HCl from phosphazene polycondensation causes etching on ZIF-67. Based on this “synchronous etching” effect, a series of hybrid materials comprising cyclomatrix polyphosphazene and ZIF-67, denoted as ZIF-67@PDS (PDS, poly-(cyclotriphosphazene-co-4,4’-diaminodiphenyl sulfone)), ZIF-67@PBS (PBS, poly-(cyclotriphosphazene-co-Bisphenol A)), and ZIF-67@PZS (PZS, poly-(cyclotriphosphazene-co-4,4’-sulfonyldiphenol)), was synthesized utilizing DDS (4,4’-diaminodiphenyl sulfone), BPA (Bisphenol A), and BPS (4,4’-sulfonyldiphenol) monomers as precursors, respectively. Upon the incorporation of 2.0 wt.% of ZIF-67@PDS, ZIF-67@PBS, and ZIF-67@PZS, the flame retardant and mechanical characteristics of EP composites exhibited marked enhancement. The unique structural characteristics of hybrid and the synergistic effects of Co-P-N contribute to the improvement of comprehensive properties. Compared with pure EP, EP/ZIF-67@PZS has the best enhancement effect, and its pHRR, THR, and TSP decreased by 34.0%, 30.0%, and 40.5%, respectively. In terms of mechanical strength, ZIF-67@PZS also increases the flexural strength of EP by 37.42%. Relying on the “synchronous etching” effect, this study explores and verifies the effective combination of ZIF-67 and different types of polyphosphazenes, and obtains a series of ZIF-67-derived cyclomatrix polyphosphazene hybrids with different morphologies and properties in one step. It provides a new idea and strategy for the simultaneous modification of polyphosphazene materials and the preparation of multifunctional flame retardants in the future. |
| Keywords | Cyclomatrix polyphosphazene |
| Contains Sensitive Content | Does not contain sensitive content |
| ANZSRC Field of Research 2020 | 510999. Space sciences not elsewhere classified |
| Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
| Byline Affiliations | Beijing Institute of Technology, China |
| Centre for Future Materials | |
| School of Agriculture and Environmental Science | |
| Beijing Institute of Fashion Technology, China | |
| Polytechnic University of Valencia, Spain |
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