Preparation and characterization of PVDF/silica hybrid membranes containing sulfonic acid groups

被引:54
作者
Kim, DS
Park, HB
Lee, YM [1 ]
Park, YH
Rhim, JW
机构
[1] Hanyang Univ, Coll Engn, Sch Chem Engn, Natl Res Lab Membranes, Seoul 133791, South Korea
[2] Suncheon Natl Univ, Dept Polymer Engn, Sunchon, South Korea
[3] Hannam Univ, Dept Chem Engn, Taejon 306791, South Korea
关键词
D O I
10.1002/app.20451
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Organic-inorganic hybrid membranes of poly(vinylidene fluoride)-cohexafluoropropylene (PVDF-HFP) and silica composites containing sulfonic acid groups were prepared via in situ polymerization of tetraethoxysilane (TEOS) and sulfosuccinic acid (SSA) using the sol-gel process. The membranes containing more sulfonic acid groups showed a higher vapor sorption and greater swelling behavior. The bound and free water content of the membrane is proportional to the SSA concentration. However, the hybrid membranes without SSA do not have free water. The ion conductivity of the membranes is proportional to the SSA concentration. Silica content in the hybrid membrane without SSA had great effect on their mechanical properties. Tensile modulus and yield stress increased and yield strain and elongation at break decreased with increased silica content. However, in the case of the hybrid membrane containing SSA modulus, yield stress decreased and yield strain and elongation at break increased with increased silica content due to the weak interactions between the hydrophobic polymer chain and the hydrophilic group of SSA. (C) 2004 Wiley Periodicals, Inc.
引用
收藏
页码:209 / 218
页数:10
相关论文
共 29 条
[1]   Novel hydrophilic membrane materials: sulfonated polyethersulfone Cardo [J].
Blanco, JF ;
Nguyen, QT ;
Schaetzel, P .
JOURNAL OF MEMBRANE SCIENCE, 2001, 186 (02) :267-279
[2]  
BRINKER CJ, 1999, PHYS CHEM SOL GEL PR
[3]   Synthesis and characterization of polyimide silica hybrid composites [J].
Chen, Y ;
Iroh, JO .
CHEMISTRY OF MATERIALS, 1999, 11 (05) :1218-1222
[4]  
Cho JW, 2001, POLYMER, V42, P727, DOI 10.1016/S0032-3861(00)00371-2
[5]  
CHUJO Y, 1991, MAKROMOL CHEM-M SYMP, V303, P42
[6]  
Engelhardt G., 1987, HIGH RESOLUTION SOLI
[7]   Stability study of sulfonated phthalic and naphthalenic polyimide structures in aqueous medium [J].
Genies, C ;
Mercier, R ;
Sillion, B ;
Petiaud, R ;
Cornet, N ;
Gebel, G ;
Pineri, M .
POLYMER, 2001, 42 (12) :5097-5105
[8]   DSC INVESTIGATION OF THE STATES OF WATER IN POLYVINYL-ALCOHOL) MEMBRANES [J].
HIGUCHI, A ;
IIJIMA, T .
POLYMER, 1985, 26 (08) :1207-1211
[9]  
Honma I, 2002, FUEL CELLS, V2, P52, DOI 10.1002/1615-6854(20020815)2:1<52::AID-FUCE52>3.0.CO
[10]  
2-G