食品科学 ›› 2018, Vol. 39 ›› Issue (8): 205-211.doi: 10.7506/spkx1002-6630-201808032

• 工艺技术 • 上一篇    下一篇

玉米秸秆纳米纤维素的制备及表征

孙海涛1,2,3,邵信儒1,2,瞿照婷2,秦婷2,马中苏3   

  1. (1.通化师范学院 长白山食用植物资源开发工程中心,吉林?通化 134000;2.通化师范学院食品科学与工程学院,吉林?通化 134000;3.吉林大学食品科学与工程学院,吉林?长春 130062)
  • 出版日期:2018-04-25 发布日期:2018-04-17
  • 基金资助:
    吉林省教育厅“十三五”科学技术研究规划项目(JJKH20170435KJ); “十二五”国家科技支撑计划项目(2015BAD16B05)

Preparation and Characterization of Corn Straw Nanocellulose

Sun Haitao1,2,3, Shao Xinru1,2, QU Zhaoting2, QIN Ting 2, MA Zhongsu3   

  1. (1. Changbai Mountain Edible Plant Resources Development Engineering Center, Tonghua Normal University, Tonghua 134000, China; 2. College of Food Science and Engineering, Tonghua Normal University, Tonghua 134000, China;3. College of Food Science and Engineering, Jilin University, Changchun 130062, China)
  • Online:2018-04-25 Published:2018-04-17

摘要: 利用超声辅助硫酸水解法制备玉米秸秆纳米纤维素(corn straw nanocellulose,NCSC),研究超声辅助酸解条件对NCSC得率的影响,并通过响应面法优化得到最佳工艺条件为:硫酸体积分数64%、超声功率160?W、酸解温度48?℃、酸解时间78?min,在此条件下制备NCSC得率达38.29%。制备的NCSC较洁白、细腻,具有较好的吸水膨胀力。通过红外光谱分析、X射线衍射和热失重分析表明,NCSC仍保持着玉米秸秆纤维素(corn straw cellulose,CSC)的基本化学结构,其结晶度(70.53%)高于CSC,同时具有较高的热分解温度。

关键词: 纳米纤维素, 玉米秸秆, 超声, 表征, 酸解

Abstract: Corn straw nanocellulose (NCSC) was prepared by ultrasound-assisted sulfuric acid hydrolysis method. The effects of experimental conditions on the yield of NCSC were studied. The optimum conditions were obtained using response surface methodology as follows: H2SO4 concentration, 64%; ultrasonic power, 160 W; temperature, 48 ℃; and hydrolysis time, 78 min. Under these conditions, the yield of NCSC was 38.29%. The NCSC was white and delicate, and had good water swelling force. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermogravimetric analysis (TGA) showed that the NCSC maintained the basic chemical structure of corn straw cellulose (CSC). Its crystallinity (70.53%) and thermal decomposition temperature were higher than those of CSC.

Key words: nanocellulose, corn straw, ultrasound, characterization, sulfuric acid hydrolysis

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