期刊
MATERIALS RESEARCH EXPRESS
卷 4, 期 6, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/aa72bc
关键词
aerogel; calcium chloride; test-butyl alcohol; gelation; nanocellulose; solvent
资金
- Special Fund for Forest Scientific Research in the Public Welfare [201504603]
- Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions
- Doctorate Fellowship Foundation of Nanjing Forestry University of China [163020772]
Aerogel, a highly porous material, is attracting increasing attention owing to low thermal conductivity and high specific surface area. Freeze-drying technology has been employed to produce nano-cellulose aerogels; however, the resultant product has low specific surface areas. Here, a modified approach to prepare nano-cellulose aerogels was reported, which involves tert-butyl alcohol as a solvent. Nano-cellulose aerogels were prepared via a spontaneous gelation fashion using calcium chloride solution, followed by tert-butyl alcohol solvent displacement and freeze drying. Addition of calcium chloride (0.25%) accelerated the physical gelation process. The application of tert-butyl alcohol as a solvent contributed to preservation of gel network. The obtained spherical nano-cellulose aerogels had a shrinkage rate of 5.89%. The specific surface area and average pore size was 164. 9666 m(2)g(-1) and 10.01 nm, respectively. Additionally, nano-cellulose aerogels had a comparable thermal degradation property when compared to microcrystalline cellulose. These biophysical properties make nano-cellulose aerogels as a promising absorption material.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据