Preparation of perfluorocarbon polymers containing phosphonic acid groups

Котов, С. В.; Pedersen, Scot D.; Qiu, Weiming; Qiu, Zaozao; Burton, Donald J.

doi:10.1016/s0022-1139(96)03534-8

Cited by 98 publications

(79 citation statements)

References 3 publications

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“…is observed between 250 C and 350 C. Such a thermal behavior has been already reported by different authors 16,17 and is ascribed to a decomposition of the ethyl groups of the phosphonated ester into the free acid and ethylene, as well as a possible formation of anhydride groups from two phosphonic acids. The degradation of the polymer backbone (attributed to C-P bond cleavage) is observed at much higher temperatures (> 380 C).…”

Section: Resultssupporting

confidence: 77%

Phosphonic acid‐containing polysulfones as anticorrosive layers

Chauveau

Marestin

Merçier

et al. 2015

J of Applied Polymer Sci

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International audienceAs a part of research work to elaborate polymeric materials for metal corrosion protection, we have developed a new family of phosphonic acid-containing polymers. The synthesis and the characterization of polysulfones bearing alkyl phosphonate ester side groups are first described. These polymers are synthesized by direct polycondensation of a phosphonate ester-containing bisphenol by aromatic nucleophilic substitution. The physicochemical properties of the resulting polymers are described. Acidic hydrolysis of phosphonate esters results in the formation of phosphonic acid groups. A series of phosphonic acid-containing polysulfones is therefore obtained and characterized. A preliminary evaluation of the anticorrosive properties of these polymers is described. In 0.25M Na2SO4 solution, the corrosion rate of a polymer-coated mild steel sample is much lower than of the free metal substrate. These results suggest that phosphonic acid-containing polysulfones might be interesting as anticorrosive coatings

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Section: Resultssupporting

confidence: 77%

Phosphonic acid‐containing polysulfones as anticorrosive layers

Chauveau

Marestin

Merçier

et al. 2015

J of Applied Polymer Sci

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“…Furthermore, a high degree of phosphonation (DP) is required to achieve sufficient proton conductivity because of the lower acidity of phosphonic acid. [11,12] Recently, Miyatake and Hay [13] and Nunes and coworkers [14] reported successful phosphonation reactions based on the conversion of bromo-poly(aryl ethers) and poly(ether sulfone)s, respectively, using a palladium catalyst. However, properties related to proton conductivity were not reported.…”

Section: Introductionmentioning

confidence: 99%

Fluorinated Poly(aryl ether) Containing a 4‐Bromophenyl Pendant Group and its Phosphonated Derivative

Liu¹,

Robertson²,

Guiver³

et al. 2006

Macromol. Rapid Commun.

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Summary: A high‐molecular‐weight fluorinated poly(aryl ether) with a 4‐bromophenyl pendant group has been synthesized based on a bromo‐bisphenol. A phosphonic acid derivative is readily prepared from this in high conversion yield. The phosphonated polymer possesses excellent thermal, oxidative, and dimensional stability, low methanol permeability, and reasonable proton conductivity, and may be a candidate polymeric electrolyte membrane for fuel cell applications.

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“…Membranes with pendent phosphonic acid groups appear to possess very good thermal and chemical stability [6] and lower methanol crossover than Nafion [9].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Proton Exchange Membranes with Pendent Phosphonic Acid Groups by Irradiation Grafting of VBC

Schmidt‐Naake

Böhme

Cabrera

2005

Chem. Eng. Technol.

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Proton exchange membranes with pendent phosphonic acid groups were synthesized by pre-irradiation grafting from vinylbenzyl chloride onto FEP and ETFE films with subsequent Arbuzov phosphonation. Free phosphonic acid groups, which are necessary for proton conductivity, were obtained by acid ester hydrolysis. The phosphonated membranes were characterized by phosphonation degree, FTIR-spectroscopy, ion exchange capacity (IEC), oxidation stability, swelling properties, and thermal properties (TGA).

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Preparation of perfluorocarbon polymers containing phosphonic acid groups

Cited by 98 publications

References 3 publications

Phosphonic acid‐containing polysulfones as anticorrosive layers

Phosphonic acid‐containing polysulfones as anticorrosive layers

Fluorinated Poly(aryl ether) Containing a 4‐Bromophenyl Pendant Group and its Phosphonated Derivative

Synthesis of Proton Exchange Membranes with Pendent Phosphonic Acid Groups by Irradiation Grafting of VBC

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