Study on nanocellulose by high pressure homogenization in homogeneous isolation
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- 作者：Yihong Wang ; Xiaoyi Wei ; Jihua Li ; Fei Wang ; Qinghuang Wang…
- 关键词：Nanocellulose ; High pressure homogenization ; Homogeneous isolation ; Hydrogen bonds ; [Bmim]Cl
- 刊名：Fibers and Polymers
- 出版年：2015
- 出版时间：March 2015
- 年：2015
- 卷：16
- 期：3
- 页码：572-578
- 全文大小：614 KB
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23 - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Polymer Sciences - 出版者：The Korean Fiber Society
- ISSN：1875-0052
文摘
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 10-0 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.