| 基于溶胶-凝胶技术制备纳米纤维素的表征 |
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| 引用本文： | 谢成,刘志明,王海英,孟围. 基于溶胶-凝胶技术制备纳米纤维素的表征[J]. 广东化工, 2012, 39(11): 3-4 |
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| 作者姓名： | 谢成 刘志明 王海英 孟围 |
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| 作者单位： | 1. 东北林业大学材料科学与工程学院生物质材料科学与技术教育部重点实验室,黑龙江哈尔滨,150040
2. 东北林业大学林学院,黑龙江哈尔滨,150040 |
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| 基金项目： | 国家自然科学基金资助项目，中央高校基本科研业务费专项资金资助，东北林业大学研究生论文资助项目 |
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| 摘 要： | 通过傅里叶变换红外光谱、X射线衍射、热重、透射电子显微镜分析及激光粒度分析对基于溶胶-凝胶技术制备的纳米纤维素进行表征,结果表明原料微晶纤维素超分子结构为纤维素Ⅰ型,制备的纳米纤维素为纤维素Ⅱ型;微晶纤维素的结晶度为87.54%,纳米纤维素的结晶度为73.49%,纳米纤维素结晶度较微晶纤维素有所下降;制备的纳米纤维素热稳定性低于微晶纤维素;纳米纤维素平均粒度425 nm,粒度分布呈现正态分布;纳米纤维素长径比为5∶1～40∶1。
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| 关 键 词： | 纳米纤维素 溶胶-凝胶法 热稳定性 粒度分布 |
Characterization of Nano-cellulose with Sol-gel Method |
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| Xie Cheng,Liu Zhiming,＊,Wang Haiying,Meng Wei. Characterization of Nano-cellulose with Sol-gel Method[J]. Guangdong Chemical Industry, 2012, 39(11): 3-4 |
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| Authors: | Xie Cheng Liu Zhiming ＊ Wang Haiying Meng Wei |
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| Affiliation: | 1.Key Laboratory of Bio-based Material Science and Technology of Ministry of Education,College of Material Science and Engineering,Northeast Forestry University,Harbin 150040;2.College of Forestry,Northeast Forestry University,Harbin 150040,China) |
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| Abstract: | Nano-cellulose prepared by sol-gel method was characterized by using Fourier transform infrared（FTIR） spectroscopy,X-ray diffraction（XRD）,thermal gravimetric analysis（TGA）,transmission electron microscopy（TEM） and laser particle size test.The results showed that supramolecular structure of microcrystalline cellulose（MCC） as raw material was cellulose I,while the prepared nano-cellulose was cellulose Ⅱ.The crystallinity of MCC was calculated as 87.54 %,for nano-cellulose,the crystallinity was 73.49 %.The crystallinity of nano-cellulose decreased slightly compared with that of MCC.The thermal stability of nano-cellulose was less than that of MCC.The mean size of nano-cellulose was 425 nm,its particle size distribution appeared normal distribution.Aspect ratio of nano-cellulose was 5∶1 to 40∶1. |
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| Keywords: | nano-cellulose sol-gel method thermal stability particle size distribution |
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