化工进展 ›› 2016, Vol. 35 ›› Issue (03): 866-871.DOI: 10.16085/j.issn.1000-6613.2016.03.033

• 材料科学与技术 • 上一篇    下一篇

磷酸锆辅助催化水解菌糠制备纳米纤维素晶体的性能

庄森炀1, 唐丽荣1,2, 卢麒麟1, 林凤采1, 倪沛钟1, 黄彪1   

  1. 1 福建农林大学材料工程学院, 福建 福州 350002;
    2 福建农林大学金山学院, 福建 福州 350002
  • 收稿日期:2015-07-23 修回日期:2015-08-13 出版日期:2016-03-05 发布日期:2016-03-05
  • 通讯作者: 黄彪,教授,博士生导师,主要从事植物纤维化学与炭材料研究。E-mail:fjhuangbiao@hotmail.com
  • 作者简介:庄森炀(1991-),男,硕士研究生。唐丽荣(1984-),女,讲师,博士,主要从事植物纤维化学与炭材料研究。E-mail:tanglr0201@126.com.
  • 基金资助:

    “948”国家林业局引进先进林业科学技术项目(2014-4-30)、福建省教育厅A类科研项目(JA13371)及福建农林大学“校杰出青年科研人才”培养专项基金(xjq201422)项目。

Preparation of cellulose nanocrystals by solid catalyst zirconium phosphate assisted hydrolysis from spent mushroom substrate

ZHUANG Senyang1, TANG Lirong1,2, LU Qilin1, LIN Fengcai1, NI Peizhong1, HUANG Biao1   

  1. 1 College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China;
    2 Jinshan College of Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
  • Received:2015-07-23 Revised:2015-08-13 Online:2016-03-05 Published:2016-03-05

摘要: 以食用菌产业的副产品菌糠为原料,采用磷酸锆催化剂辅助稀硫酸水解制备纳米纤维素晶体(cellulose nanocrystals,CNCs).与传统酸水解方法相比,该方法简化了工艺流程,制备过程环境友好。考察了超声时间、超声温度以及稀硫酸浓度等因素对CNCs得率的影响。结果表明当超声时间为5h、超声温度为75℃及稀硫酸浓度为12.3%时,CNCs得率为42.80%.采用透射电子显微镜(TEM)、扫描电子显微镜(SEM)、傅里叶变换红外光谱(FTIR)以及X射线衍射仪(XRD)对样品的微观形貌、谱学性能和晶体结构进行了研究分析,结果表明所制得的CNCs呈棒状,直径介于10~30nm之间;CNCs属于纤维素I型,与原料菌糠相比,结晶度由63.79%增大到81.04%;且CNCs仍具有天然纤维素的基本化学结构。论文研究为菌糠的资源化高效利用开辟了新途径。

关键词: 菌糠, 磷酸锆, 稀硫酸, 催化水解, 纳米纤维素晶体

Abstract: In this research,cellulose nanocrystals (CNCs) were prepared by solid catalyst zirconium phosphate assisted hydrolysis method from spent mushroom substrate. Compared with traditional acid hydrolysis method,this method is simpler to operate and more eco-friendly. The effect of ultrasonication time,ultrasonication temperature and the concentration of diluted sulfuric acid on the yield of CNCs were investigated. The results showed that the yield of CNCs reached 42.80%,when ultrasonication time was 5h,ultrasonication temperature was 75℃ and the concentration of diluted sulfuric acid was 12.3%. The microstructure,morphology,spectrum properties and the crystal structure of CNCs were characterized by transmission electron microscopy(TEM),scanning electron microscope (SEM),fourier transformation infrared spectroscopy (FTIR) and X-ray diffraction (XRD),respectively. The SEM and TEM showed that CNCs were rod-like with diameters of 10-30nm,and the FTIR analysis showed that the CNCs still kept the basic chemical structure of cellulose. The XRD pattern showed that the CNCs presented the crystal form of cellulose I. Compared with the spent mushroom substrate,the crystallinity of CNCs increased from 63.79% to 81.04%. This research proposed a new approach to efficient utilization of the spent mushroom substrate.

Key words: spent mushroom substrate, zirconium phosphate, diluted sulfuricacid, catalytic hydrolysis, cellulose nanocrystals

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