Variation of the physicochemical and morphological characteristics of solvent casted poly(vinylidene fluoride) along its binary phase diagram with dimethylformamide

被引：54
作者：
Ferreira, J. C. C. [1 ]
Monteiro, T. S. [1 ]
Lopes, A. C. [1 ]
Costa, C. M. [1 ]
Silva, M. M. [2 ]
Machado, A. V. [3 ]
Lanceros-Mendez, S. [1 ]
机构：
[1] Univ Minho, Ctr Dept Fis, P-4710057 Braga, Portugal
[2] Univ Minho, Ctr Dept Quim, P-4710057 Braga, Portugal
[3] Univ Minho, IPC, I3N, P-4800058 Guimaraes, Portugal
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2015年 / 412卷
关键词：
PVDF; Porous membranes; Solvent casting; Phase diagram; Mesoscale simulation; PVDF MEMBRANES; POLYVINYLIDENE FLUORIDE; PROCESSING CONDITIONS; COMPUTER-SIMULATION; PRECIPITATION; TEMPERATURE; POLYMORPHISM; INVERSION; FTIR;
D O I：
10.1016/j.jnoncrysol.2015.01.003
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Poly(vinylidene fluoride), PVDF, films and membranes were prepared by solvent casting from dimethylformamide, DMF, by systematically varying polymer/solvent ratio and solvent evaporation temperature. The effect of the processing conditions on the morphology, degree of porosity, mechanical and thermal properties and crystalline phase of the polymer was evaluated. The obtained microstructure is explained by the Flory-Huggins theory. For the binary system, the porous membrane formation is attributed to a spinodal decomposition of the liquid-liquid phase separation. The morphological features were simulated through the correlation between the Gibbs total free energy and the Flory-Huggins theory. This correlation allowed the calculation of the PVDF/DMF phase diagram and the evolution of the microstructure in different regions of the phase diagram. Varying preparation conditions allow tailoring polymer microstructure while maintaining a high degree of crystallinity and a large beta crystalline phase content. Further, the membranes show adequate mechanical properties for applications in filtration or battery separator membranes. (C) 2015 Elsevier B.V. All rights reserved.
引用
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页码：16 / 23
页数：8
相关论文
共 46 条
[1]   Nanoporous membranes for medical and biological applications [J].
Adiga, Shashishekar P. ;
Jin, Chunmin ;
Curtiss, Larry A. ;
Monteiro-Riviere, Nancy A. ;
Narayan, Roger J. .
WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY, 2009, 1 (05) :568-581
[2]   The MesoDyn project: software for mesoscale chemical engineering [J].
Altevogt, P ;
Evers, OA ;
Fraaije, JGEM ;
Maurits, NM ;
van Vlimmeren, BAC .
JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM, 1999, 463 (1-2) :139-143
[3]  
Baker R. W., 2012, MEMBRANE TECHNOLOGY, V3rd
[4]  
Bassett D.C., 1982, DEV CRYSTALLINE POLY
[5]   Poly(vinylidene fluoride) with improved functionalization for membrane production [J].
Bottino, A ;
Capannelli, G ;
Monticelli, O ;
Piaggio, P .
JOURNAL OF MEMBRANE SCIENCE, 2000, 166 (01) :23-29
[6]   Poly(vinylidene fluoride) membranes by phase inversion: the role the casting and coagulation conditions play in their morphology, crystalline structure and properties [J].
Buonomenna, M. G. ;
Macchi, P. ;
Davoli, M. ;
Drioli, E. .
EUROPEAN POLYMER JOURNAL, 2007, 43 (04) :1557-1572
[7]   Tailoring porous structure of ferroelectric poly(vinylidene fluoride-trifluoroethylene) by controlling solvent/polymer ratio and solvent evaporation rate [J].
California, Antonio ;
Cardoso, Vanessa F. ;
Costa, Carlos M. ;
Sencadas, Vitor ;
Botelho, Gabriela ;
Gomez-Ribelles, Jose L. ;
Lanceros-Mendez, Senentxu .
EUROPEAN POLYMER JOURNAL, 2011, 47 (12) :2442-2450
[8]   Analysis of polymer membrane formation through spinodal decomposition .4. Computer simulation of early-stage coarsening [J].
Caneba, GT ;
Saxena, R .
POLYMER ENGINEERING AND SCIENCE, 1996, 36 (02) :288-297
[9]  
Chan P., 1995, COMP MATER SCI, V3, P377, DOI 10.1016/0927-0256(94)00076-O
[10]   Effect of temperature on the formation of microporous PVDF membranes by precipitation from 1-octanol/DMF/PVDF and water/DMF/PVDF systems [J].
Cheng, LP .
MACROMOLECULES, 1999, 32 (20) :6668-6674
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