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林业科学 ›› 2011, Vol. 47 ›› Issue (9): 119-122.doi: 10.11707/j.1001-7488.20110920

• 论文 • 上一篇    下一篇

纳米纤维素晶体的制备及表征

唐丽荣1,2, 黄彪2, 戴达松2, 欧文2, 李玉华2, 陈学榕2   

  1. 1. 福建农林大学金山学院 福州 350002;2. 福建农林大学材料工程学院 福州 350002
  • 收稿日期:2009-12-07 修回日期:2010-02-08 出版日期:2011-09-25 发布日期:2011-09-25
  • 通讯作者: 黄彪

Preparation and Characterization of Nanocrystal Cellulose

Tang Lirong1,2, Huang Biao2, Dai Dasong2, Ou Wen2, Li Yuhua2, Chen Xuerong2   

  1. 1. Jinshan College of Fujian Agriculture and Forestry University Fuzhou 350002;2. College of Material Engineering,Fujian Agriculture and Forestry University Fuzhou 350002
  • Received:2009-12-07 Revised:2010-02-08 Online:2011-09-25 Published:2011-09-25

摘要:

采用超声波辅助硫酸水解、高速离心取其上清层水溶胶的方法由微晶纤维素(MCC)制备纳米纤维素晶体(NCC),并采用场发射透射电子显微镜(FETEM)、场发射环境扫描电子显微镜(FEGE-SEM)、X射线衍射仪(XRD)和傅里叶变换红外光谱仪(FTIR)对所制备NCC的尺寸与形态、结构、组成和光谱性质进行分析。结果表明: FETEM和FEGE-SEM观察所制备纳米纤维素晶体形态相同,呈棒状,直径和长度主要分布在2~24 nm和50~450 nm; XRD图谱表明NCC仍属于纤维素Ⅰ型,结晶度为77.29%,晶粒尺寸为3~6 nm; FTIR分析表明所制备的纳米纤维素晶体仍然具有纤维素的基本化学结构。

关键词: 纳米纤维素晶体, 微晶纤维素, 酸水解, 高速离心, 上清层水溶胶

Abstract:

Nanocrystal cellulose(NCC) was prepared from microcrystalline cellulose (MCC) by sulfuric acid hydrolysis assisted with ultrasound,in addition the NCC was obtained from supernatant hydrosol of high-speed centrifugation. Furthermore,the size and morphology, crystal structure and spectral properties of NCC were investigated and analyzed with field emission transmission electron microscopy(FETEM), field emission gun environment scanning electron microscopes(FEGE-SEM), X ray diffraction(XRD) and Fourier transformation infrared spectroscopy(FTIR). The results show that the same like morphology of NCC can be observed by FETEM and FEGE-SEM, they are rod like, and the diameter is about 2-24 nm, with the length of 50-450 nm. Moreover,the XRD pattern show the NCC is characteristic of the celluloseⅠcrystal form,and the crystallinity of NCC is 77.29%, the grain size is about 3~6 nm. On the other hand,NCC still keep with the basic chemical structure of cellulose analyzed with FTIR.

Key words: nanocrystal cellulose, microcrystalline cellulose, acid hydrolysis, high-speed centrifugation, supernatant hydrosol

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