文献类型：期刊文献

英文题名：Ultralight and hydrophobic nanofibrillated cellulose aerogels from coconut shell with ultrastrong adsorption properties

作者：Wan, Caichao[1] Lu, Yun[2] Jiao, Yue[1] Jin, Chunde[3] Sun, Qingfeng[3] Li, Jian[1]

第一作者：Wan, Caichao

通信作者：Lu, Y[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]Zhejiang Agr & Forestry Univ, Sch Engn, Linan 311300, Peoples R China

年份：2015

卷号：132

期号：24

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20150900589431);Scopus(收录号：2-s2.0-84925737059);WOS:【SCI-EXPANDED(收录号:WOS:000351685500001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (contract grant number 31270590), a project funded by the China Postdoctoral Science Foundation (contract grant number 2013M540263), and the Doctoral Candidate Innovation Research Support Program of Science & Technology Review (contract grant number kjdb2012006).

语种：英文

外文关键词：adsorption; cellulose and other wood products; functionalization of polymers; nanostructured polymers; surfaces and interfaces

摘要：Ultralight aerogels based on nanofibrillated cellulose (NFC) isolated from coconut shell were successfully prepared via a mild fast method, which included chemical pretreatment, ultrasonic isolation, solvent exchange, and tert-butanol freeze drying. The as-prepared NFC aerogels with complex three-dimensional fibrillar networks had a low bulk density of 0.84 mg/cm(3) (specific surface area=9.1 m(2)/g and pore volume=0.025 cm(3)/g), maintained a cellulose I crystal structure, and showed more superior thermal stability than the coconut shell raw materials. After the hydrophobic modification by methyl trichlorosilane (MTCS), the NFC aerogels exhibited high water repellency properties, an ultrastrong oil-adsorption capacity (542 times that of the original dry weight of diesel oil), and superior oil-water separation performance. Moreover, the absorption capabilities of the MTCS-treated NFC aerogels were as high as 296-669 times their own weights for various organic solvents and oil. Thus, this class of high-performance adsorbing materials might be useful for dealing with chemical leaks and oil spills. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42037.