日本中文字幕三级片,亚洲成AV人片在线观看网址,欧美激情黑白配视频一区二区,如何选择丰满熟女裸体舞bbwxxxx

  設(shè)為主頁(yè) 加入收藏 English
 
 
 
 新聞動(dòng)態(tài)
 行業(yè)動(dòng)態(tài)
 展會(huì)信息
 誠(chéng)聘英才
 
 

Preparation of PAN nanofiltration membranes by supercritical-CO2-induced phase separation

發(fā)布時(shí)間:2016-10-26  點(diǎn)擊次數(shù):351  新聞來(lái)源:
 

作者 Haozong Wanga, Jianhui Yua, Hua Baia, Lei Lia, b,

a College of Materials, Xiamen University, Xiamen 361005, People’s Republic of China

b State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, People’s Republic of China

 

摘要:Nanoporous polyacrylonitrile (PAN) membranes were prepared by a supercritical carbon dioxide induced phase separation method from a solution containing dimethyl formamide as the solvent. The influence of the experiment parameters, including temperatures, pressures and polymer concentrations, on the morphology of the nanoporous membrane were investigated in detail. The porosities of the obtained membranes were characterized by scanning electron microscopy and nitrogen adsorption technique. The PAN membranes demonstrate high pure water flux and high size selectivity, which have promising applications for the nanofiltration.

 
 
上海市普陀區(qū)嵐皋路567號(hào)1108-26室 電話:021-62665073 400-718-7758 傳真:021-62761957 聯(lián)系郵箱:info@bicchina.com
美國(guó)布魯克海文儀器公司上海代表處 版權(quán)所有  管理登陸 ICP備案號(hào):滬ICP備19006074號(hào)-2 技術(shù)支持:化工儀器網(wǎng)