| Comparable Characterization of Nanocellulose Extracted from Bleached Softwood and Hardwood Pulps |
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| Author Name | Affiliation | | Bin Li1, 2,* | 1.CAS Key Laboratory of Bio-based Materials, CAS Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong Province, 266101, China
2. Johan Gadolin Process Centre, c/o Laboratory of Wood and Paper Chemistry, Turku, FI-20500, Finland | | WenYang Xu2 | 2. Johan Gadolin Process Centre, c/o Laboratory of Wood and Paper Chemistry, Turku, FI-20500, Finland | | Dennis Kronlund3 | 3. Laboratory of Physical Chemistry, ?bo Akademi University, Turku, FI-20500, Finland | | Jan-Erik Eriksson4 | 4. Johan Gadolin Process Centre, c/o Laboratory of Inorganic Chemistry, ?bo Akademi University, Turku, FI-20500, Finland | | Anni Mttnen3 | 3. Laboratory of Physical Chemistry, ?bo Akademi University, Turku, FI-20500, Finland | | Stefan Willfr2 | 2. Johan Gadolin Process Centre, c/o Laboratory of Wood and Paper Chemistry, Turku, FI-20500, Finland | | ChunLin Xu2,* | 2. Johan Gadolin Process Centre, c/o Laboratory of Wood and Paper Chemistry, Turku, FI-20500, Finland |
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| Fund Project:Financial support was from the Johan Gadolin Scholarship Programme at the Johan Gadolin Process Chemistry Centre at bo Akademi University (Finland), and the National Natural Science Foundation of China (No. 31470609). The authors would also like to thank Dr. Markus Peurla at Lab. of Electron Microscopy, University of Turku (Finland) for helping on the TEM measurements. |
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| Abstract:In this study, the characteristics of nanocellulose extracted from bleached softwood and hardwood pulps by formic acid hydrolysis followed by TEMPO-mediated oxidation were compared using transmission electron microscopy (TEM), atomic force microscopy (AFM), Fourier transform infrared analysis (FT-IR), X-ray diffraction (XRD), and thermal gravimetric analysis (TGA). The experimental results showed that the nanocellulose products derived from spruce pulp exhibited a relatively larger particle size, higher crystallinity, and higher thermal stability, compared with the corresponding products obtained from aspen pulp under the same conditions. Furthermore, the study helped establish that the properties of the nanocellulose products were highly dependent on the nature of the starting materials under identical processing conditions. |
| keywords:nanocellulose cellulose nanocrystal cellulose nanofibril formic acid TEMPO-mediated oxidation comparison |
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