Functional fluoropolymers

In addition, the incorporation of fluoroether units in a regular sequence in the above fluoropolyethers is almost impossible owing to the random nature of the copolymerization process. In this article we describe a novel method for making perfectly alternating fluoropolyethers from functional fluoropolymers that are prepared by base-catalyzed homopolymerization of hydroxy-containing fluoro-monomers. 

Langmuir-Blodgett Films from Functional Fluoropolymers... 

There are two principal ways to synthesize functional fluoropolymers (a) polymerization of functional fluoromonomers or copolymerization of fluoro-olefins with functional monomers, and (b) modification of common... 

In this chaper, the two principal methods for their synthesis and some of the main applications of functional fluoropolymers will be reviewed. However, as there are many patents and papers as well as several reviews on these subjects, the review will be brief and the primary focus will be on selected applications and specific properties of functional fluoropolymers that can be achieved in highly ordered Langmuir-Blodgett (LB) films of these polymers. 

As was noted above, functional fluoropolymers produced by copolymerization of fluoroolefins with functional PFAVE have several unique properties, with the main disadvantage of these materials being the extremely high cost of functional monomers and the resulting high cost of the functional polymers produced from them. The fact that they are so expensive limits their wider industrial application in other fields such as catalysis and membrane separation, except for chlorine-alkali electrolysis and fuel cells, where the only suitable materials are fully fluorinated polymers because of the extreme conditions associated with those processes. 

LANGMUIR-BLODGETT FILMS FROM FUNCTIONAL FLUOROPOLYMERS... 

Unlike the approach in which LB multilayers are formed from polymerizable fluoromonomers followed by UV-polymerization,69 we started to use functional fluoropolymers for the preparation of LB films. These films seem to be better, because in the case of monomeric LB film the polymerization process causes contraction and hence possible defects in the final cured film. Two different kinds of functional amphiphilic fluoropolymers were used for LB-film preparation. One type (referred to in Section 7.4.2), which has large fluoroalkyl groups as side... 

Fluorinated Polymers with Functional Groups Synthesis and Applications. Langmuir-Blodgett Films from Functional Fluoropolymers... 

Souzy, R. and Ameduri, B., Functional fluoropolymers for fuel cell membranes. Prog. Polym. Sci., 30, 644, 2005. 

Functionalized Fluoropolymers via Controlled/Living Radical Gretft Copolymerization for Membrane Fabrication In general, bulk copolymerization... 

FUNCTIONAL FLUOROPOLYMER FOR PROTON-CONDUCTIVE COMPOSITE MEMBRANES... 

FIGURE 15.1 Functionalized fluoropolymer acid layer coating an aluminum-AljOj coreshell particle. PFTD, perfluoro tetradecanoic. 

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