Network Nano-Porous Poly(vinylidene fluoride-co-hexafluoropropene) Membranes by Nano-Gelation Assisted phase Separation of Poly(vinylidene fluoride-co-hexafluoropropene)/Poly(methyl methacrylate) Blend Precursor in Toluene

被引：23

作者：

Lin, Dar-Jong ^{[1
]}

Lin, Chun-Liang ^{[1
]}

Guo, Shyuan-Yu ^{[1
]}

机构：

[1] Tamkang Univ, Dept Chem & Mat Engn, New Taipei City 25137, Taiwan

来源：

MACROMOLECULES | 2012年 / 45卷 / 21期

关键词：

SOLUTION TEMPERATURE BEHAVIOR; COCONTINUOUS POLYMER BLENDS; POLY(METHYL METHACRYLATE); PVDF/PMMA BLENDS; FINE-STRUCTURE; X-RAY; FLUORIDE); INVERSION; MORPHOLOGY; PVDF;

D O I：

10.1021/ma301075e

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Network nanoporous poly(vinylidene fluoride-co-hexafluoropropene (PVDF-HFP) membrane formation mechanism via poly(methyl methacrylate) (PMMA) leaching from PVDF-HFP/PMMA blend filth was studied. The blends of PVDF-HFP with PMMA comprise miscible amorphous phase much larger in quantity than those of poly(vinylidene fluoride) (PVDF) with PMMA. The residual PVDF-HFP crystalline phase which may present in very small fraction was characterized by SAXS, which permitted estimation of the critical composition Of phase boundary of blend. The FESEM micrograph revealed the network morphology of the membranes being composed of interconnected tiny sheaves of recrystallized PVDF-HFP. Nanogelation mechanism is proposed to describe the crystallization of disentangled PVDF-HFP chain segments under spatial confinement during PMMA leaching from amorphous solution phase in blend film. The crystallinities of membranes determined by DSC are found to be consistent with the theoretically calculated values. Present research suggested a novel approach for the formation of network nanoporous membranes from semicrystalline polymers.

引用

页码：8824 / 8832

页数：9

共 41 条

[1] Crystallinity and morphology of PVdF-HFP-based gel electrolytes [J].

Abbrent, S ;

Plestil, J ;

Hlavata, D ;

Lindgren, J ;

Tegenfeldt, J ;

Wendsjö, Å .

POLYMER, 2001, 42 (04) :1407-1416

[2] Noncircular pores on the surface of asymmetric polymer membranes: evidence of pore formation via spinodal demixing [J].

Akthakul, A ;

McDonald, WF ;

Mayes, AM .

JOURNAL OF MEMBRANE SCIENCE, 2002, 208 (1-2) :147-155

[3]

[Anonymous], 1988, ACRYLATES POLYACRYLA

[4] LCST BEHAVIOR IN POLYMER BLENDS [J].

BERNSTEIN, RE ;

CRUZ, CA ;

PAUL, DR ;

BARLOW, JW .

MACROMOLECULES, 1977, 10 (03) :681-686

[5]

Bourry D, 1998, J POLYM SCI POL PHYS, V36, P1889, DOI 10.1002/(SICI)1099-0488(199808)36:11<1889::AID-POLB10>3.0.CO

[6]

2-3

[7] MEMBRANE FORMATION BY ISOTHERMAL PRECIPITATION IN POLYAMIDE FORMIC-ACID WATER-SYSTEMS .1. DESCRIPTION OF MEMBRANE MORPHOLOGY [J].

CHENG, LP ;

DWAN, AH ;

GRYTE, CC .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1995, 33 (02) :211-222

[8] COMPATIBILITY IN PVF2-PMMA AND PVF2-PEMA BLENDS AS STUDIED BY PULSED NMR [J].

DOUGLASS, DC ;

MCBRIERTY, VJ .

MACROMOLECULES, 1978, 11 (04) :766-773

[9] Image analysis for interfacial area and cocontinuity detection in polymer blends [J].

Galloway, JA ;

Montminy, MD ;

Macosko, CW .

POLYMER, 2002, 43 (17) :4715-4722

[10] Modification of polysulfone membranes 5.: Effect of n-butylamine and allylamine plasma [J].

Gancarz, I ;

Pozniak, G ;

Bryjak, M ;

Tylus, W .

EUROPEAN POLYMER JOURNAL, 2002, 38 (10) :1937-1946

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