Simultaneously improved chitin gel formation and thermal stability promoted by TiO2
| Autor: | Lucian A. Lucia, Yousef M. Katba Bader, Zhen Zhang, Jianzhong Yang |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
macromolecular substances 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Alkali metal 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials Improved performance Crystallinity chemistry.chemical_compound Chemical engineering Chitin chemistry Materials Chemistry Thermal stability Physical and Theoretical Chemistry 0210 nano-technology Spectroscopy |
| Zdroj: | Journal of Molecular Liquids. 328:115332 |
| ISSN: | 0167-7322 |
| Popis: | A severe challenge hindering preparation of chitin-based composites is their insolubility in normal solvents. Different composites gels were successfully fabricated through alkali and freezing treatment in chitin‑titanium dioxide (TiO2) suspensions. TiO2 particles played a key role in chitin gel performance, in which improved thermal stability and a unique cell-structure-like morphological result were simultaneously achieved. The thermal stabilizing effect was attributed to the high thermal stability of TiO2 particles. With respect to the mechanism of gel formation, the TiO2 particles reduce the effect of the alkali treatment and induce specific interactions with chitin to lead to a stronger and denser gel network. The former was supported by the increase in crystallinity, while the latter was substantiated by FT-IR results. Our current study provides a green and simple approach to prepare chitin-TiO2 composites with improved performance. |
| Databáze: | OpenAIRE |
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