Homogeneous isolation of nanocellulose from eucalyptus pulp by high pressure homogenization
| Autor: | Yihong Wang, Fei Wang, Xiaoyi Wei, Jihua Li, Qinghuang Wang, Lingxue Kong, Yongdan Zhang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Pulp (paper) 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Nanocellulose chemistry.chemical_compound Crystallinity chemistry Chemical engineering Botany engineering Magic angle spinning Molar mass distribution Thermal stability Cellulose 0210 nano-technology Bagasse Agronomy and Crop Science |
| Zdroj: | Industrial Crops and Products. 104:237-241 |
| ISSN: | 0926-6690 |
| DOI: | 10.1016/j.indcrop.2017.04.032 |
| Popis: | Nanocellulose from eucalyptus (Eucalyptus robusta Smith) pulp was extracted by simply disrupting the hydrogen bond network of celluloses with high pressure homogenization (HPH). It was found that nanocellulose was 20–100 nm in diameter, and presented a narrower molecular weight distribution, lower thermal stability and crystallinity index. Fourier transform infrared (FT-IR) and solid state cross polarization magic angle spinning carbon-13 nuclear magnetic resonance (CP/MAS 13C NMR) were used to confirm the physicochemical properties of nanocellulose, suggesting that intra-molecular hydrogen bonds are entirely maintained. Meanwhile, the feasibility of high pressure homogenization for different cellulosic biomass materials was investigated using comparison of eucalyptus pulp nanocellulose, sugarcane (Saccharum officinarum) bagasse nanocellulose and cotton (Gossypium spp) nanocellulose. Results showed that eucalyptus pulp chains could be interrupted easily by the shearing forces for its harder texture, which was suited for high pressure homogenization. Other kinds of cellulose could also be well suited through controlling key parameters such as mechanical forces and treatment temperature in the process. |
| Databáze: | OpenAIRE |
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