| 低温法提取的纳米大蒜皮纤维素及其表征 |
| Nano Garlic Skin Cellulose Extracted by Low Temperature Method and Its Characterization |
| 投稿时间：2020-03-05 修订日期：2020-03-05 |
| DOI：10.12136/j.issn.1000-890X.2021.09.0670 |
| 中文关键词: 纳米纤维素 大蒜皮 结晶度 低温 氢氧化钠 尿素 高锰酸钾 析出 |
| 英文关键词: nano cellulose garlic skin crystallinity low temperature extraction NaOH urea KMnO４ precipitation |
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| 中文摘要: |
| 在低温下用氢氧化钠/尿素混合液提取大蒜皮里的纤维素，再加入质量分数为0. 05的高锰酸钾（KMnO４）溶液析出纳米纤维素，并采用傅里叶红外光谱、扫描电子显微镜和X射线衍射谱对其进行表征，结果表明该法提取的纳米纤维素的结晶度较高，达到73. 8%。结合纳米纤维素的热重分析可以推测，KMnO４溶液处理所得的纳米纤维素具有较好的力学性能。 |
| 英文摘要: |
| The cellulose in garlic skin was extracted by sodium hydroxide（NaOH）/urea mixture at low temperature，and then nano cellulose was precipitated by adding potassium permanganate （KMnO４）solution with a mass fraction of 0. 05. The nano cellulose was characterized by Fourier transform infrared spectroscopy，scanning electron microscopy and X-ray diffraction spectroscopy. The results showed that the crystallinity of nano cellulose extracted by this method was relatively high，reaching 73. 8%.Combined with the thermogravimetric analysis of nano cellulose，it could be inferred that the nano cellulose treated with KMnO４ solution had excellent mechanical properties. |
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