Surface wormlike morphology control of polysulfone/poly(N-isopropylacrylamide) membranes by tuning the two-stage phase separation and their thermo-responsive permselectivity

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2018专题

	Surface wormlike morphology control of polysulfone/poly(N-isopropylacrylamide) membranes by tuning the two-stage phase separation and their thermo-responsive permselectivity
	Xue, Qun-Ji; Zeng, Zhi-Xiang; Wang, Gang; Li, Chen; Song, Hai-Ming; Zhu, Li-Jing
刊名	JOURNAL OF MEMBRANE SCIENCE
	2018
卷号	555 页码:290-298
关键词	Block-copolymer Membranes Smart Gating Membranes Polyethersulfone Membranes Ultrafiltration Membranes Polysulfone Membranes Triblock Terpolymers Nanoporous Membranes Isoporous Membranes Tunable Properties Porous Membranes
英文摘要	The preparation of thermo-responsive polymeric porous membranes with well-defined morphology and high mechanical strength is still a great challenge. In our work, high strength and self-supporting polysulfone/poly(N-isopropylacrylamide) (PSf/PNIPAm) membranes with tuning wormlike network morphology and thermo-responsibility were successfully prepared via the approach combining in situ cross-linking polymerization with vapor-liquid nonsolvent induced phase separation (V-LIPS). With increasing the NIPAm concentration and the exposure time during the VIPS process, the wormlike networks self-assembled on the membrane surfaces, and their diameter rapidly increased to similar to 63 nm in 60 s. As a result, the pore size/porosity of the membranes increased and the membrane hydrophilicity improved, leading to high water flux with a maximum value of similar to 222 Lm(-2) h(-1) at 23 degrees C. Furthermore, the permselectivity of the fabricated membranes exhibited strong and fully reversible thermo-responsive character as feed temperature ranged from 23 to 50 degrees C, in which the thermoresponsive coefficient was as high as similar to 3.7 after viscosity correction and the size distribution of silver nanoparticles in the filtrates narrowed down sharply. In addition, the fabricated membranes with wormlike network morphology exhibited the maximum tensile strength of similar to 6 MPa and elongation at break of similar to 33%, which are much higher than the block copolymers based membranes with the similar morphology. The approach provided here opens a new and simple way to prepare high strength PSf membranes with tuning network morphology and thermo-responsive permselectivity in large scale, and which is expected to be expanded to fabricate other polymeric microporous membranes.
学科主题	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
公开日期	2018-12-04
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/17465]
专题	2018专题
推荐引用方式 GB/T 7714	Xue, Qun-Ji,Zeng, Zhi-Xiang,Wang, Gang,et al. Surface wormlike morphology control of polysulfone/poly(N-isopropylacrylamide) membranes by tuning the two-stage phase separation and their thermo-responsive permselectivity[J]. JOURNAL OF MEMBRANE SCIENCE,2018,555:290-298.
APA	Xue, Qun-Ji,Zeng, Zhi-Xiang,Wang, Gang,Li, Chen,Song, Hai-Ming,&Zhu, Li-Jing.(2018).Surface wormlike morphology control of polysulfone/poly(N-isopropylacrylamide) membranes by tuning the two-stage phase separation and their thermo-responsive permselectivity.JOURNAL OF MEMBRANE SCIENCE,555,290-298.
MLA	Xue, Qun-Ji,et al."Surface wormlike morphology control of polysulfone/poly(N-isopropylacrylamide) membranes by tuning the two-stage phase separation and their thermo-responsive permselectivity".JOURNAL OF MEMBRANE SCIENCE 555(2018):290-298.