ICCAS OpenIR
The research of rheology and thermodynamics of organic-inorganic hybrid membrane during the membrane formation
Ya-nan, Yang1,2; Jun, Wu1; Qing-zhu, Zheng3; Xue-si, Chen2; Hui-xuan, Zhang1
2008-03-20
Source PublicationJOURNAL OF MEMBRANE SCIENCE
ISSN0376-7388
Volume311Issue:1-2Pages:200-207
AbstractTo 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.
KeywordPsf/tio2 Hybrid Membrane Thermodynamical And Theological Properties Kinetic Parameter Porosity Microstructure
DOI10.1016/j.memsci.2007.12.014
Indexed BySCI
Language英语
WOS IDWOS:000254324800024
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:40[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/63486
Collection中国科学院化学研究所
Corresponding AuthorYa-nan, Yang
Affiliation1.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
Recommended Citation
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.
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