Preparation of perfluorocarbon polymers containing phosphonic acid groups

被引：85

作者：

Kotov, SV ^{[1
]}

Pedersen, SD ^{[1
]}

Qiu, WM ^{[1
]}

Qiu, ZM ^{[1
]}

Burton, DJ ^{[1
]}

机构：

[1] UNIV IOWA,DEPT CHEM,IOWA CITY,IA 52242

来源：

JOURNAL OF FLUORINE CHEMISTRY | 1997年 / 82卷 / 01期

关键词：

perfluorocarbon polymers; phosphonic acid groups; synthesis;

D O I：

10.1016/S0022-1139(96)03534-8

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Several co- and ter-fluoropolymers based on tetrafluoroethylene (TFE) and perfluorovinylethers, such as CF2=CFO(CF2)(2)P(O)(OC2H5)(2), CF2=CFO(CF2)(3)P(O)(OC2H5)(2), CF2=CFOCF2CF(CF3)O(CF2)(2)P(O)(OC2H5)(2) and CF=CFOC3F7, were synthesized via redox-initiated emulsion polymerization. The products were subjected to acid hydrolysis and the corresponding fluorinated polymeric phosphonic acids were obtained. Both the polymeric phosphonates and phosphonic acids can be readily processed into films by compression molding. Perfluorinated phosphonic acid membranes with an ion-exchange capacity (IEC) within the range 2.5-3.5 milliequivalents per gram and a thermal stability of 300-350 degrees C were prepared. The characteristics of these acid membranes were explored, and these films show promising electrochemical properties, such as proton conductivity.

引用

页码：13 / 19

页数：7

共 6 条

[1] OMEGA-HYDROPERFLUOROALKYLPHOSPHONIC ACIDS, ESTERS, AND DICHLORIDES [J].