Study on nanocellulose by high pressure homogenization in homogeneous isolation
| Autor: | Qinghuang Wang, Yihong Wang, Jihua Li, Jiacui Chen, Lingxue Kong, Fei Wang, Xiaoyi Wei |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Polymers and Plastics Hydrogen bond General Chemical Engineering General Chemistry Nanocellulose chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy Chemical engineering Ionic liquid Polymer chemistry Molar mass distribution Thermal stability Cellulose Fourier transform infrared spectroscopy |
| Zdroj: | Fibers and Polymers. 16:572-578 |
| ISSN: | 1875-0052 1229-9197 |
| DOI: | 10.1007/s12221-015-0572-1 |
| Popis: | Nanocellulose from cotton cellulose was prepared by high pressure homogenization (HPH) in ionic liquids (1-butyl-3-methylimidazolium chloride ([Bmim]Cl). The nanocellulose possessed narrow particle size distribution, with diameter range of 10–20 nm. Weight average molecular weight (Mw) of nanocellulose treated by HPH was lower (173.8 kDa) than the one ILs treated cellulose (344.6 kDa). X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), and Solid-state CP/MAS 13C NMR measurements were employed to study the mechanism of structural changes, which suggested that network structure between cellulose chains were destructed by the shearing forces of HPH in combination with ionic liquids. The intermolecular and intra-molecular hydrogen bonds of cellulose were further destroyed, leading to the long cellulose molecular chains being collapsed into short chains. Therefore, the nanocellulose could provide desired properties, such as lower thermal stability and strong water holding capacity. Results indicated that it had great potential in the applications for packaging, medicines, cosmetics and tissue engineering. |
| Databáze: | OpenAIRE |
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