摘要
It is difficult to access exfoliated sepiolite(Sep)fibers with high aspect ratio from Sep ore.The traditional method used to purify Sep ore also reduces its aspect ratio.In this study,impurities in the Sep ore were removed by acid activation followed by a cetyltrimethylammonium chloride(C16)treatment to organically modify the purified Sep by cation exchange.Then,the organically-modified Sep(O-Sep)was stripped and processed by an ultrasonic cell crusher to obtain Sep microfibers at a specific frequency for a given period.These Sep samples had relatively high aspect ratio,compared with the Sep fibers gotten by traditional method.Scanning electron microscopy(SEM)and transmission electron microscopy(TEM)demonstrate the micro-morphology of exfoliated Sep samples in an intuitive way.Moreover,pure inorganic membrane prepared only with the exfoliated Sep fibers exhibited excellent flexibility,further demonstrating the excellent properties of Sep fibers with high aspect ratio.
作者
XU Tong
HU Yelei
QIAN Di
ZHU Yuanzhao
ZHONG Yi
ZHANG Linping
XU Hong
MAO Zhiping
续通;胡叶蕾;钱迪;朱元昭;钟毅;张琳萍;徐红;毛志平(Key Laboratory of Science&Technology of Eco-Textile,Ministry of Education,Donghua University,Shanghai 201620,China;National Dyeing and Finishing Engineering Technology Research Center,Donghua University,Shanghai 201620,China;National Manufacturing Innovation Center of Advanced Dyeing and Finishing Technology,Taian 271000,China;Key Laboratory of Bioorganic Phosphorus Chemistry&Chemical Biology,Ministry of Education,Department of Chemistry,Tsinghua University,Beijing 100084,China;Sino-German Engineering College,Shanghai Technical Institute of Electronics&Information,Shanghai 201411,China)
基金
Fundamental Research Funds for the Central Universities of ministry of Education of China(No.2232020G-04)
National Key Research&Development Program of China(No.2018YFC1801500)。
