文献类型：期刊文献

英文题名：Cellulose aerogels from cellulose-NaOH/PEG solution and comparison with different cellulose contents

作者：Wan, C.[1] Lu, Y.[2] Jiao, Y.[1] Cao, J.[3] Sun, Q.[4] Li, J.[1]

第一作者：Wan, C.

通信作者：Li, J[1]

机构：[1]Northeast Forestry Univ, Mat Sci & Engn Coll, Harbin 150040, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[3]Northeast Forestry Univ, Coll Mech & Elect Engn, Harbin 150040, Peoples R China;[4]Zhejiang Agr & Forestry Univ, Sch Engn, Linan 311300, Peoples R China

年份：2015

卷号：31

期号：9

起止页码：1096-1102

外文期刊名：MATERIALS SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20153301166500);Scopus(收录号：2-s2.0-84937415255);WOS:【SCI-EXPANDED(收录号:WOS:000355335700010)】；

基金：This work was financially supported by the National Natural Science Foundation of China (grant no. 31270590), a project funded by the China Postdoctoral Science Foundation (no. 2013M540263) and the Doctoral Candidate Innovation Research Support Program of Science & Technology Review (no. kjdb2012006).

语种：英文

外文关键词：Cellulose aerogels; NaOH/PEG solution; oil adsorption; freeze drying; polymers

摘要：A green mild NaOH/polyethylene glycol solution was employed to dissolve the cellulose extracted from waste wheat straw. Subsequently combined with the freezing-thawing treatment, regeneration process and freeze drying, the cellulose aerogels with different cellulose contents were fabricated at mass ratios of 1 : 100, 3 : 100, 5 : 100 and 7 : 100 cellulose to the solution. Moreover, the influences of cellulose contents on the morphologies, crystal structures, crystallinity indexes, thermal stabilities and pore characteristic parameters of the aerogels were investigated by scanning electron microscope, X-ray diffraction, thermogravimetric analysis and nitrogen adsorption. Meanwhile, the oil adsorption properties of the aerogels with different cellulose contents were also surveyed; besides, for improving lipophilicity, the hydrophobic modifications of trimethylchlorosilane for the aerogels were carried out before the adsorption tests.