From ultrafiltration to nanofiltration: Nanofiltration membrane fabricated by a combined process of chemical crosslinking and thermal annealing

doi:10.1016/j.seppur.2018.11.041

	From ultrafiltration to nanofiltration: Nanofiltration membrane fabricated by a combined process of chemical crosslinking and thermal annealing
	Liu, Chunli 1,2; Sun, Yuxuan 1,3; Chen, Zhenbin 2; Zhang, Suobo 1,4
刊名	SEPARATION AND PURIFICATION TECHNOLOGY
	2019-04
卷号	212 页码:465-473
关键词	Nanofiltration membrane Quaternization Crosslinking Thermal annealing
ISSN号	1383-5866
DOI	10.1016/j.seppur.2018.11.041
英文摘要	An integrally skinned dense ultrafiltration (UF) membrane was prepared using partially di-quatemized poly (sulfone-co-ethernitrile) random copolymer (PSF-co-DQAPEN) via classical nonsolvent induced phase inversion process (NIPS). Then the original UF membrane was molecularly restructured through a combined process of chemical quatemization-crosslinking reaction and thermal annealing for the preparation of a crosslinked nanofiltration (NF) membrane, in which p-xylylene dichloride (PXDC) and isopropanol were employed as crosslinking agent and nonsolvent treating medium, respectively. The influence of reaction time and crosslinker concentration on membrane performance were investigated. X-ray photoelectron spectroscopy (XPS) of membrane surface and solubility test of membrane were employed to study the chemical composition and crosslinking properties of membranes, and those results revealed that the original membrane had been successfully crosslinked after this post treatment process. The separation performance of membrane was ultimately changed from UF-level to NF-level after the quatemization-crosslinking reaction and thermal annealing treatment process. The optimum crosslinked NF membrane possessed MgCl2 rejection of 98.2% and water permeate flux of 4.12 L m(-2) h(-1) bar(-1). Moreover, owning to the excellent chemical stability of membrane material, the crosslinked membrane had outstanding resistance to chlorine, acid and base, thus it can be used for water softening and removing of positive dyes. Given the convenience and feasibility of this modification method, integrally skinned NF membrane could be easily fabricated via the post chemical crosslinking and thermal annealing process of UF membrane using proper treating approaches.
资助项目	Development of Scientific and Technological Project of the Jilin Province[20160101316JC] ; Development of Scientific and Technological Project of the Jilin Province[20160519006JH]
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000457814700051
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32022]
专题	材料科学与工程学院
通讯作者	Zhang, Suobo
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, Key Lab Ecomat, Changchun 130022, Jilin, Peoples R China 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China 4.Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, Nanjing, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Liu, Chunli,Sun, Yuxuan,Chen, Zhenbin,et al. From ultrafiltration to nanofiltration: Nanofiltration membrane fabricated by a combined process of chemical crosslinking and thermal annealing[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2019,212:465-473.
APA	Liu, Chunli,Sun, Yuxuan,Chen, Zhenbin,&Zhang, Suobo.(2019).From ultrafiltration to nanofiltration: Nanofiltration membrane fabricated by a combined process of chemical crosslinking and thermal annealing.SEPARATION AND PURIFICATION TECHNOLOGY,212,465-473.
MLA	Liu, Chunli,et al."From ultrafiltration to nanofiltration: Nanofiltration membrane fabricated by a combined process of chemical crosslinking and thermal annealing".SEPARATION AND PURIFICATION TECHNOLOGY 212(2019):465-473.