蔗渣浆制备纳米纤维素及其气凝胶的研究

doi:10.3969/j.issn.1673-5854.2015.05.002

生物质化学工程 ›› 2015, Vol. 49 ›› Issue (5): 7-10.doi: 10.3969/j.issn.1673-5854.2015.05.002

蔗渣浆制备纳米纤维素及其气凝胶的研究

张开涛¹, 孙佩佩¹, 商士斌^1,2, 刘鹤^1,2, 王丹^1,2, 李晶晶¹

1. 中国林业科学研究院林产化学工业研究所;生物质化学利用国家工程实验室;国家林业局林产化学工程重点开放性实验室;江苏省生物质能源与材料重点实验室, 江苏南京 210042;
2. 中国林业科学研究院林业新技术研究所, 北京 100091

收稿日期:2014-06-23 出版日期:2015-09-30 发布日期:2015-10-12
通讯作者: 王丹,男,博士,硕士生导师,研究方向为生物质资源化学与利用;E-mail:wgdan@163.com。 E-mail:wgdan@163.com
作者简介:张开涛(1990— ),男,山东莒县人,硕士生,研究方向为生物质资源化学与利用
基金资助:
国家自然科学基金资助项目(31170540);中国林科院中央级公益性科研院所基本科研业务费专项基金(CAFINT2015C01); 中国博士后科学基金(2014M561091)

Preparation of Nanocellulose and Its Aerogel from Bagasse Pulp

ZHANG Kai-tao¹, SUN Pei-pei¹, SHANG Shi-bin^1,2, LIU He^1,2, WANG Dan^1,2, LI Jing-jing¹

1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key and Open Lab. of Forest Chemical Engineering, SFA; Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
2. Research Institute of Forestry New Technology, CAF, Beijing 100091, China

Received:2014-06-23 Online:2015-09-30 Published:2015-10-12

摘要/Abstract

摘要： 以蔗渣浆为原料,通过2,2,6,6-四甲基哌啶(TEMPO)催化氧化后,超声波处理制备纳米纤维素(NCC),再经冷冻干燥制备了纤维素气凝胶。通过透射电子显微镜(TEM)、傅里叶红外光谱(FT-IR)、热重分析(TG)、X射线衍射仪(XRD)、扫描电子显微镜(SEM)对NCC及其气凝胶形态和结构等进行了研究。TEM显示超声波作用30 min得到的NCC长度为100~400 nm,直径为20 nm左右;XRD显示氧化后NCC晶型仍为纤维素Ⅰ型;TG显示NCC相对蔗渣原料热稳定性降低;SEM显示NCC水悬浊液中,NCC质量分数为0.1%时,冷冻干燥得到的纤维素气凝胶为三维网状结构,NCC质量分数大于0.1%时,纤维素气凝胶为"蜂窝状"多孔结构。

关键词: 氧化, 蔗渣浆, 纳米纤维素, 气凝胶

Abstract: Nanocellulose (NCC) was successfully prepared from TEMPO-mediated oxidation of bagasse pulp assisted with ultrasonic treatment, then the cellulose aerogel was obtained via freeze-drying. Furthermore, the morphology, structure and properties of NCC and its cellulose aerogel were investigated by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray diffraction (XRD) and scanning electron microscope (SEM). The TEM observation showed that obtained NCC had a diameter about 20 nm and a length ranged from 100 nm to 400 nm. XRD analysis inhabited that NCC maintained the structure of cellulose typeⅠ. TG analysis demonstrated that the thermal stabilities of both the oxidized bagasse pulp and NCC became worse when they were compared with the raw material. SEM images revealed that cellulose aerogel exhibited a three-dimensional network structure when the mass fraction of NCC in suspension was 0.1%, while cellulose aerogel displayed a porous "Honeycomb" structure when the mass fraction of NCC was more than 0.1%.

Key words: oxidition, bagasse pulp, nanocellulose, aerogel

中图分类号:

TQ352.79

张开涛, 孙佩佩, 商士斌, 刘鹤, 王丹, 李晶晶. 蔗渣浆制备纳米纤维素及其气凝胶的研究[J]. 生物质化学工程, 2015, 49(5): 7-10.

ZHANG Kai-tao, SUN Pei-pei, SHANG Shi-bin, LIU He, WANG Dan, LI Jing-jing. Preparation of Nanocellulose and Its Aerogel from Bagasse Pulp[J]. bce, 2015, 49(5): 7-10.

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蔗渣浆制备纳米纤维素及其气凝胶的研究

Preparation of Nanocellulose and Its Aerogel from Bagasse Pulp

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