Preparation and characterization of low-pressure nanofiltration membranes and the application in the separation process of dye molecules

Autor:	Xiu-Zhen Wei, You-Yi Xu, Guo-Liang Zhang, Bao-Ku Zhu, Jia Yang
Rok vydání:	2011
Předmět:	Materials science Xylenol orange Mechanical Engineering Ultrafiltration Infrared spectroscopy Contact angle chemistry.chemical_compound Membrane chemistry Chemical engineering Mechanics of Materials Polymer chemistry Rhodamine B General Materials Science Nanofiltration Polysulfone
Zdroj:	Journal of Porous Materials. 19:721-731
ISSN:	1573-4854 1380-2224
DOI:	10.1007/s10934-011-9524-3
Popis:	Low-pressure nanofiltratioin (NF) membranes were prepared with hydroxyl groups ended hyperbranched polyester (HPE) using polysulfone (PSf) ultrafiltration membrane as the porous support. The prepared membranes are characterized using Fourier transforms infrared spectrometry, scanning electro microscopy, atom force microscopy, X-ray photoelectron spectroscopy and water contact angle. The results indicated that the crosslinked HPE formed a uniform, ultra-thin and active layer on PSf support. Water permeability and salt rejection of the membranes were measured at the trans-membrane pressures as low as 0.3 MPa. NF membranes exhibited high enhancement in water permeability while maintaining high rejection of salts. The rejections of the nanofiltration membrane to Rhodamine B and Xylenol orange were 100 and 98.4%, respectively. The study indicated that these NF membranes could be applied to separate small organic molecules.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7664b8a827414e375eaa9a9521ca041b https://doi.org/10.1007/s10934-011-9524-3 Zobrazit plný text záznamu Full text from SpringerLink