The research of rheology and thermodynamics of organic-inorganic hybrid membrane during the membrane formation

doi:10.1016/j.memsci.2007.12.014

CORC > 化学研究所 > 中国科学院化学研究所

	The research of rheology and thermodynamics of organic-inorganic hybrid membrane during the membrane formation
	Ya-nan, Yang 1,2; Jun, Wu 1; Qing-zhu, Zheng 3; Xue-si, Chen 2; Hui-xuan, Zhang 1
刊名	JOURNAL OF MEMBRANE SCIENCE
	2008-03-20
卷号	311 期号:1-2 页码:200-207
关键词	Psf/tio2 Hybrid Membrane Thermodynamical And Theological Properties Kinetic Parameter Porosity Microstructure
ISSN号	0376-7388
DOI	10.1016/j.memsci.2007.12.014
英文摘要	To clarify the mechanism of organic-inorganic hybrid membrane formation by phase-inversion method, the thermodynamical and theological properties of PSF/TiO2 casting solution were investigated by the viscosity measurement and the triangle phase diagram, respectively. TiO2 introduction decreased the non-solvent tolerance of casting solution with non-solvent 20% ethanol aqueous solution, which caused thermodynamic enhancement of phase separation, and also resulted in the change of theological properties from Newtonian fluid to non-Newtonian fluid and the viscosity increase of casting solution, which induced rheological hindrance in demixing process. On the basis of the relationship between wet membrane thickness and coagulation time, a novel method used to calculate kinetics parameter (D-a) of membrane formation was founded and an equation of D-a = d(2)/t was established. With the increase of TiO2 concentration, it was revealed that D-a increased firstly and then decreased with a maximum value of 0.002204 mm(2)/s at certain temperature (20 degrees C). With the increase of coagulation bath temperature, D-a increased and the viscosity decreased continuously when the composition of casting solution was constant. D-a was mainly influenced by the porosity of membrane and the thermodynamic, theological properties of casting solution. In addition, D-a also had a main influence on membrane structure by SEM observation, a higher D-a was apt to form a more open membrane, as consequence, it was feasible using D-a as a parameter to evaluate PSF/TiO2 hybrid membrane structure. (C) 2007 Elsevier B.V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000254324800024
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/63485]
专题	中国科学院化学研究所
通讯作者	Ya-nan, Yang
作者单位	1.Changchun Univ Technol, Changchun 130012, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 3.Qingdao Agr Univ, Dept Resources & Environm, Qingdao 266109, Peoples R China
推荐引用方式 GB/T 7714	Ya-nan, Yang,Jun, Wu,Qing-zhu, Zheng,et al. The research of rheology and thermodynamics of organic-inorganic hybrid membrane during the membrane formation[J]. JOURNAL OF MEMBRANE SCIENCE,2008,311(1-2):200-207.
APA	Ya-nan, Yang,Jun, Wu,Qing-zhu, Zheng,Xue-si, Chen,&Hui-xuan, Zhang.(2008).The research of rheology and thermodynamics of organic-inorganic hybrid membrane during the membrane formation.JOURNAL OF MEMBRANE SCIENCE,311(1-2),200-207.
MLA	Ya-nan, Yang,et al."The research of rheology and thermodynamics of organic-inorganic hybrid membrane during the membrane formation".JOURNAL OF MEMBRANE SCIENCE 311.1-2(2008):200-207.