Polyelectrolyte Composite Membranes Containing Electrospun Ion-Exchange Nanofibers: Effect of Nanofiber Surface Charges on Ionic Transport

被引：17

作者：

Seino, Fumiyasu ^{[1
]}

Konosu, Yuichi ^{[1
]}

Ashizawa, Minoru ^{[1
]}

Kakihana, Yuriko ^{[2
,3
]}

Higa, Mitsuru ^{[2
,3
]}

Matsumoto, Hidetoshi ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Mat Sci & Engn, Meguro Ku, Mail Box S8-27,2-12-1 Ookayama, Tokyo 1528552, Japan

[2] Yamaguchi Univ, Grad Sch Sci & Technol Innovat, Div Appl Fine Chem, 2-16-1 Tokiwadai, Ube, Yamaguchi 7558611, Japan

[3] Blue Energy Ctr SGE Technol BEST, 2-16-1 Tokiwadai, Ube, Yamaguchi 7558611, Japan

来源：

LANGMUIR | 2018年 / 34卷 / 43期

关键词：

POLYMER; PROTON; STATE; NAFION; WATER;

D O I：

10.1021/acs.langmuir.8b02747

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Poly(vinyl alcohol) (PVA)-based ion-exchange nanofibers (IEX-NFs) and their composite polyelectrolyte membranes were prepared and characterized. The PVA-based NFs are well dispersed and form a three-dimensional network structure in the polymer matrix, Nafion. All of the prepared membranes show a similar ion-exchange capacity of similar to 1.0 mmol g(-1). The ionic conductivities through the PVA-b-PSSNF/Nafion composite membranes are superior to that of the Nafion membranes, but the conductivity through the PVANF/Nafion composite membrane is half that of the Nafion membrane. Our electrokinetic measurements clearly indicate that a high density of ion-exchange groups on the NF surface results in a continuous ionic transport path in the polymer matrix. In addition, the mechanical strength of all of the NF-composite membranes is improved compared with that of the membranes without NF.

引用

页码：13035 / 13040

页数：6

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