| 黄思维,周定国,吴清林.玉米叶纳米纤维素的提取及表征[J].中国造纸学报,2015,30(3):1-4 |
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| 玉米叶纳米纤维素的提取及表征 |
| Preparation and Characterization of Nanocellulose from Corn Leaf |
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| DOI：10.11981/j.issn.1000-6842.2015.03.1 |
| 中文关键词: 玉米叶纳米纤维素 硫酸水解-超声法 增强材料 |
| Key Words:corn leaf nanocellulose sulfuric acid hydrolysis and ultrasonic method reinforcing material |
| 基金项目:江苏高校优势学科建设工程资助项目(164020890);江苏省自然科学科学青年基金项目(BK20130975);芦苇工业化利用生物质模塑产业开发(编号：028020089)。 |
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| 中文摘要: |
| 以农作物废弃物玉米叶为原料,首先去除玉米叶的木质素和半纤维素,获得纯化纤维素,然后通过硫酸水解-超声法提取玉米叶纳米纤维素,并运用XRD、FT-IR、TG和TEM表征纳米纤维素的微观形貌、结构以及热稳定性。结果表明,制备玉米叶纳米纤维素的最佳水解温度60℃,水解时间2 h,硫酸质量分数60%；玉米叶纳米纤维素呈棒状,直径约8 nm,长度150～200 nm,属纤维素I型,结晶度66.5%,起始热解温度为243.43℃,其可作为优良的增强材料应用于塑料加工或纸品生产。 |
| Abstract: |
| Purified cellulose was obtained from corn leaf, a crop residue by removing lignin and hemicellulose. Nanocellulose was prepared from the cellulose by sulfuric acid hydrolysis and ultrasonic treatment and characterization by XRD, FT-IR, TG and TEM to study its crystal morphology, physical, chemical structure and thermal stability. The results showed that the optimum hydrolysis temperature of corn leaf cellulose was 60℃, the hydrolysis time was 2 h, and the concentration of sulfuric acid was 60%. The diameter of the nanocellulose was about 8 nm, with length of 150~200 nm. The XRD pattern showed the NCC belonged to cellulose I, and the crystallinity of NCC was 66.5%, the pyrolysis temperature was 243.43℃. The NCC prepared from corn leaf could be excellent reinforcing materials for the manufacture of plastic and paper products. |
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