Formation of Ordered Honeycomb-structured Polyphenylsulfone Films by Water-droplet Templating
Polyphenylsulfone (PPSU) is known as a membrane material with superior mechanical strength,thermo-stability and chemical resistance.The ordered honeycomb-structured PPSU films were prepared in a highly humid atmosphere by water droplet templating method which is one of the great development in the field of molecular self-assemble.Solvent,polymer concentration and additive have been studied,which were found to be important factors in the formation of honeycomb-structured PPSU films.The results of scanning electron microscope showed that with the increase of polymer concentration from 20 g/L to 80 g/L,average pore size of films first ascended from 4.4 to 11.1 μm from the polymer concentration of 20 g/L to 40 g/L and then decreased to 8.9 μm at 50 g/L and finally increased and remained stable around 11.3 μm with further increasing in polymer concentration which ranged from 60 g/L to 80 g/L.As for solvent,compared with CH2Cl2and CH2C12/CHC13,CHCl3was the better solvent.Acetone was used as an additive and with the ratio of acetone/CHCl3 increasing from 0.1:20 to 0.5:20,the pore sizes of films enlarged from 8.9 μm to 13.3μm and the number of pores cut down.
honeycomb-structured water droplet templating PPSU pore size
Jingwen Ji Lihong Deng Yanbin Yun Chunli Li
School of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China College of Material Science and Technology, Beijing Forestry University, Beijing, 100083, China New Technique Centre, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
国际会议
2013青岛国际脱盐大会(Qingdao International Conference 2013 on Desalination and Water Reuse)
青岛
英文
37-40
2013-06-25（万方平台首次上网日期，不代表论文的发表时间）