Light weight, mechanically strong and biocompatible α-chitin aerogels from different aqueous alkali hydroxide/urea solutions
| العنوان: | Light weight, mechanically strong and biocompatible α-chitin aerogels from different aqueous alkali hydroxide/urea solutions |
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| المؤلفون: | Jianhui Song, Jie Cai, Dan Zhao, Xiaodong Cao, Lina Zhang, Beibei Ding, Min Xu, Duoduo Xu, Huichang Gao |
| المصدر: | Science China Chemistry. 59:1405-1414 |
| بيانات النشر: | Springer Science and Business Media LLC, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Materials science, Aqueous solution, Biocompatibility, Inorganic chemistry, Aerogel, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, chemistry.chemical_compound, Chemical engineering, chemistry, Specific surface area, Self-healing hydrogels, Magic angle spinning, 0210 nano-technology, Dissolution, Alkali hydroxide |
| الوصف: | Light weight and mechanically strong α-chitin aerogels were fabricated using the sol-gel/self-assembly method from α-chitin in different aqueous alkali hydroxide (KOH, NaOH and LiOH)/urea solutions. All of the α-chitin solutions exhibited temperature-induced rapid gelation behavior. 13C nuclear magnetic resonance (NMR) spectra revealed that the aqueous alkali hydrox- ide/urea solutions are non-derivatizing solvents for α-chitin. Fourier transform infrared (FT-IR), X-ray diffraction (XRD) and cross-polarization magic angle spinning (CP/MAS) 13C NMR confirmed that α-chitin has a stable aggregate structure after undergoing dissolution and regeneration. Subsequently, nanostructured α-chitin aerogels were fabricated by regeneration from the chitin solutions in ethanol and then freeze-drying from t -BuOH. These α-chitin aerogels exhibited high porosity (87% to 94%), low density (0.09 to 0.19 g/cm3), high specific surface area (419 to 535 m2/g) and large pore volume (2.7 to 3.8 cm3/g). Moreover, the α-chitin aerogels exhibited good mechanical properties under compression and tension models. In vitro studies showed that mBMSCs cultured on chitin hydrogels have good biocompatibility. These nanostructured α-chitin aerogels may be useful for various applications, such as catalyst supports, carbon aerogel precursors and biomedical materials. |
| تدمد: | 1869-1870 1674-7291 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::426dae3b0d25ba1c805d17770ccff0b6Test https://doi.org/10.1007/s11426-016-0205-5Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........426dae3b0d25ba1c805d17770ccff0b6 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 18691870 16747291 |
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