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Calculation on phase diagrams of polyetherimide/N,N-dimethylacetamide/H2O-BuOH casting system and their relevance to membrane performances
Tan, Ming1,2; He, Gaohong1; Dai, Yan1; Wang, Rujie1; Shi, Wenhua1
2014-09-01
Source PublicationFRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
Volume8Issue:3Pages:312-319
Abstract

The ternary phase diagrams of polyetherimide (PEI)/N,N-dimethylacetamide (DMAc) with H2O and BuOH as non-solvent were simulated using solubility parameter and Flory-Huggins theory. The phase diagrams show that 5.5% H2O/BuOH system containing 5% BuOH and 0.5% H2O, or 6.5% H2O/BuOH system containing 6.2% BuOH and 0.3% H2O is required to induce liquid-liquid demixing for 20 wt-% PEI/DMAc casting solution. Therefore, BuOH can enhance the phase separation of the PEI casting solution and hereby induce higher porosity of the membrane, and the diffusion of BuOH into the water coagulation bath causes larger pore size easily compared with DMAc. Our predictions that the membrane pure water flux first increases then decreases, and the rejection ratio of bovine serum albumin decreases with the increasing concentration of BuOH were validated by the experiments using the prepared membranes.

SubtypeArticle
KeywordPhase Diagram Solubility Parameter Interaction Parameter Ultrafiltration Flory-huggins Theory
DOI10.1007/s11705-014-1434-x
WOS KeywordHOLLOW-FIBER MEMBRANES ; INVERSION PROCESS ; ULTRAFILTRATION MEMBRANES ; GENETIC ALGORITHM ; TERNARY-SYSTEM ; NEURAL-NETWORK ; SOLVENT ; OPTIMIZATION ; MORPHOLOGY ; SEPARATION
Indexed BySCI
Language英语
WOS IDWOS:000354904000007
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Document Type期刊论文
Identifierhttp://ir.qibebt.ac.cn/handle/337004/1782
Collection膜分离与催化团队
Affiliation1.Dalian Univ Technol, Sch Chem Engn, R&D Ctr Membrane Sci & Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China
2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biobased Mat, Qingdao 266101, Peoples R China
Recommended Citation
GB/T 7714
Tan, Ming,He, Gaohong,Dai, Yan,et al. Calculation on phase diagrams of polyetherimide/N,N-dimethylacetamide/H2O-BuOH casting system and their relevance to membrane performances[J]. FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING,2014,8(3):312-319.
APA Tan, Ming,He, Gaohong,Dai, Yan,Wang, Rujie,&Shi, Wenhua.(2014).Calculation on phase diagrams of polyetherimide/N,N-dimethylacetamide/H2O-BuOH casting system and their relevance to membrane performances.FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING,8(3),312-319.
MLA Tan, Ming,et al."Calculation on phase diagrams of polyetherimide/N,N-dimethylacetamide/H2O-BuOH casting system and their relevance to membrane performances".FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING 8.3(2014):312-319.
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