文献类型：期刊文献

英文题名：Porous aerogels prepared by crosslinking of cellulose with 1,4-butanediol diglycidyl ether in NaOH/urea solution

作者：Liu, He[1] Wang, Aiting[2] Xu, Xu[3] Wang, Mengmeng[2] Shang, Shibin[1] Liu, Shiwei[2] Song, Jie[4]

第一作者：刘鹤

通信作者：Liu, H[1];Shang, SB[1];Liu, SW[2]

机构：[1]Chinese Acad Forestry, Natl Engn Lab Biomass Chem Utilizat, Key & Lab Forest Chem Engn,State Forestry Adm, Inst Chem Ind Forestry Prod,Key Lab Biomass Energ, Nanjing 210042, Jiangsu, Peoples R China;[2]Qingdao Univ Sci & Technol, Coll Chem Engn, Qingdao 266042, Shandong, Peoples R China;[3]Nanjing Forestry Univ, Inst Chem Engn, Nanjing 210037, Jiangsu, Peoples R China;[4]Univ Michigan, Dept Chem & Biochem, Flint, MI 48502 USA

年份：2016

卷号：6

期号：49

起止页码：42845-42853

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20162102410137);Scopus(收录号：2-s2.0-84968796798);WOS:【SCI-EXPANDED(收录号:WOS:000375611100011)】；

基金：The authors express their gratitude for the National Natural Science Foundation of China (31200446); Foundation of Jiangsu Province Biomass Energy and Material Laboratory (JSBEM-S-201504); Natural Science Foundation of Jiangsu Province of China (BK20140973). The authors also thank LetPub (http://www.letpub.com) for its linguistic assistance during the preparation of this manuscript.

语种：英文

外文关键词：Cellulose - Crosslinking - Ethers - Pore size - Scanning electron microscopy - Sodium hydroxide

摘要：Cellulose aerogels based on crosslinking of cellulose with 1,4-butanediol diglycidyl ether (BDE) were homogeneously synthesized in NaOH/urea aqueous solution followed by freeze-drying. In the NaOH/urea aqueous solution, cellulose existed in a sodium alkoxide form that could react with the epoxide groups of BDE. The rheological behavior of the cellulose/NaOH/urea aqueous solution showed that the crosslinking reaction occurred immediately once the BDE was added to the cellulose/NaOH/urea aqueous solution at room temperature. The X-ray diffraction (XRD) characterization identified a transition from the crystalline structure of cellulose to an amorphous state of cellulose aerogels with increasing amount of BDE. Elemental analysis revealed the variation in carbon and oxygen elemental percentages in cellulose aerogels caused by the reaction between cellulose and BDE. The porous network of aerogels was observed by scanning electron microscopy (SEM) and the pore size of the aerogels increased as a function of BDE. The water adsorbent ability of aerogels was up to 41 g g(-1)-even after 30 squeezing-adsorption cycles, the water adsorbent ability was still 37 g g(-1).