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| Preparation of Microfibrillated Cellulose Based on NaOH-Urea Pretreatment |
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| DOI：10.11981/j.issn.1000-6842.2018.02.1 |
| Key Words:NaOH-Urea solution； pretreatment； microfibrillated cellulose |
| Fund Project:国家自然科学基金（31470608）；中央高校基本业务费（201522117）。 |
| Author Name | Affiliation | | LUO Xian-xing | State Key Lab of Pulp and Paper Engineering， South China University of Technology，Guangzhou， Guangdong Province， 510640 | | WANG Xi-wen* | State Key Lab of Pulp and Paper Engineering， South China University of Technology，Guangzhou， Guangdong Province， 510640 |
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| Abstract: |
| In order to develop an efficient method for preparing microfibrillated cellulose （MFC）， the microcrystalline cellulose （MCC） of corncob powder was pretreated by NaOH-Urea solution， and follwed by mechanical treatment to prepare MFC. The chemical structure， crystallinity， thermostability and microtopography of MFC were characterized by fourier transform infrared spectroscopy （FT-IR）， X-ray diffraction （XRD）， thermogravimetric （TG）， and field emission scanning electron microscopy （FESEM）. The results showed that the prepared MFC was cellulose Ⅰ type with the yield up to 78%. The crystallinity of MFC was 604%， and increased compared with the MCC. MFC showed excellent thermal stability and the thermal degradation temperature was up to 238℃. MFC was long rod-like with the diameter of 5～20 nm， the length was longer than 200 nm． |
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