Tailoring porous structure of ferroelectric poly(vinylidene fluoride-trifluoroethylene) by controlling solvent/polymer ratio and solvent evaporation rate

被引：68

作者：

California, Antonio ^{[1
]}

Cardoso, Vanessa F. ^{[1
,2
]}

Costa, Carlos M. ^{[1
]}

Sencadas, Vitor ^{[1
]}

Botelho, Gabriela ^{[3
]}

Gomez-Ribelles, Jose L. ^{[4
,5
,6
]}

Lanceros-Mendez, Senentxu ^{[1
]}

机构：

[1] Univ Minho, Ctr Dept Fis, P-4710058 Braga, Portugal

[2] Univ Minho, Dept Ind Elect, P-4800058 Guimaraes, Portugal

[3] Univ Minho, Ctr Dept Quim, P-4710057 Braga, Portugal

[4] Univ Politecn Valencia, Ctr Biomat & Tissue Engn, Valencia 46022, Spain

[5] Prince Felipe Res Ctr, Valencia 46013, Spain

[6] Networking Res Ctr Bioengn Biomat & Nanomed, CIBER BBN, Valencia, Spain

来源：

EUROPEAN POLYMER JOURNAL | 2011年 / 47卷 / 12期

关键词：

Electroactive membranes; Porous membranes; PVDF; Solvent evaporation; Phase diagram; INDUCED PHASE-SEPARATION; PVDF MEMBRANE FORMATION; LITHIUM ION BATTERY; BETA-PHASE; POLYMER; DEGRADATION; MORPHOLOGY; BEHAVIOR; BLENDS; FILMS;

D O I：

10.1016/j.eurpolymj.2011.10.005

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Ferroelectric macroporous poly(vinylidene fluoride-trifluoroethylene) membranes have been produced by isothermal crystallization from the solution at different temperatures starting from different diluted solutions of the co-polymer in dimethylformamide. In this way pore architecture, consisting in interconnected spherical pores can be obtained. The mechanism and kinetics of solvent evaporation was investigated and related to the evolution of the polymer microstructure. The mechanism underlying the pattern formation has been discussed on the light of the Flory-Huggins (FH) lattice theory, grain boundary effects and the Cahn-Hilliard equation for mass conservation systems. It was also observed that the temperature or initial concentration of the crystallization process does not affect the phase, ferroelectric transition temperature or the melting temperature of the polymer. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：2442 / 2450

页数：9

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