Evidence of elongated polymeric aggregates in Nafion

被引：425

作者：

Rubatat, L

Rollet, AL

Gebel, G

Diat, O

机构：

[1] CEA, Grp Polymeres Conducteurs Ion, Dept Rech Fondamentale Mat Condensee, F-38054 Grenoble 9, France

[2] CNRS, Ctr Rech Mat Haute Temp, F-45071 Orleans, France

来源：

MACROMOLECULES | 2002年 / 35卷 / 10期

关键词：

D O I：

10.1021/ma011578b

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Small-angle X-ray and neutron-scattering techniques have been used to probe the structure of swollen Nafion membranes in the range 10-10000 Angstrom. From analyzing the scattering data as a function of the polymer volume fraction and using a contrast variation method for the neutron experiments, we suggest a new structural model of Nafion in the hydrated state. It is based on the aggregation of the ionomer chains into elongated polymeric bundles with a diameter on the order of 40 Angstrom and a length larger than 1000 Angstrom, surrounded by the electrolyte solution.

引用

页码：4050 / 4055

页数：6

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