Polyphosphazenes
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  • Polyphosphazenes are a class of inorganic polymers with the repeat unit (-RR'P=N-). The substituents R,R' are usually alkoxy, amino, (R2N), or halogens (such as chloride or fluoride).
  • Polyphosphazenes are typically prepared by the thermal ring-opening polymerization of hexachlorophosphazene (Cl2PN)3 followed by esterification of the intermediate poly(dichlorophosphazene) with either amines or sodium salts of alcohols.
  • Most polyphosphazenes are colorless and exhibit high thermal stability, although they are somewhat sensitive to base hydrolysis.
  • Polyphosphazenes containing polyether side chains are good ionic conductors for lithium triflate. They are among the few polymers that will dissolve such salts.
  • Polyphosphazene is currently the highest performing membrane material for Methanol based Proton-Exchange Membrane (PEM) Fuel Cells. This fuel cell type is ideal for miniature power supply and is a leading candidate for automotive applications.
  • Medical applications include: Drug Delivery, Biological Membranes, Coatings, and polymeric medical devices and components such as prosthetics and implants.
  • Polyphosphazenes are used as flame retardants, additives, performance polymers, and in specialty applications.
  • Polyphosphazenes are being used to make membranes more thermally, mechanically, and chemically stable, as well as to enhance selectivity and overall performance. They are mainly used in electrodialysis, microfiltration, ultrafiltration, and reverse osmosis applications.
  • These are hybrid organic-inorganic polymers that have a backbone comprised of phosphorus and nitrogen atoms with althernating double and single bonds.
  • Polyphosphazene based electrolytes containing different iodide salts were studied as components of dye-sensitized solar cell.
  • Polyphosphazenes bearing cationic moieties were synthesized from poly(dichloro)phosphazene, which in turn was obtained by thermal polymerization of hexachlorocyclotriphosphazene in 1,2,4-trichlorobenzene.
  • Linear polyphosphazene polymers by direct synthesis under anhydrous conditions from NH4Cl and at least one chlorphosporous compound selected from the group consisting of XPCl4 or X2POI3 where X is one or more substitutents.
 General
  • Polyphosphazene.
  • General Information.
  • Overview.
  • Fire-Resistant Elastomers.
  • Sulfonimide Polyphosphazene-based hydrogen fuel cell.

Process

  • Synthesis and nonlinear optical property of a polyphosphazene.
  • Preparation of amino acid ester substituted polyphosphazene microparticles.
  • Synthesis of functional polyphosphazenes.
  • Polyphosphazene-Synthetic and Mechanistic aspects.

Patent

  • Flame retardant compositions containing polyphosphazenes.
  • Curable polyphosphazenes.
  • Functionalized water-soluble polyphosphazenes uses.
  • Polyphosphazenes as gel polymer electrolytes.
  • Ironically cross-linkable polyphosphazene.
  • Linear polyphosphazene and process for their production.
  • Polyphosphazene membrane separation of polar from non-polar fluids.
  • Novel Energetic Polyphosphazenes.
  • Polyphosphazenes and their synthesis.
  • Polyphosphazenes with controlled molecular weight.
  • Catalytic Synthesis of Polyphosphazenes.
  • Production of linear polyphosphazenes.
  • Purification of Polyphosphazene.
  • Removing sodium salts from polyphosphazene polymer solutions.
  • Sulfonation of polyphosphazenes.
  • Synthesis of polyphosphazenes with sulfonimide side groups.
  • Biodegradable polyphosphazene-platinum(II) conjugate antitumor agent.

Suppliers

  • List of Suppliers.
  • Suppliers from China.
  • Supplier from UK.

RawMaterial Suppliers

  • Hexachlorophosphazene.
  • Polydichlorophosphazene.
  • Hexachlorocyclo-triphosphazene.
  • 1,2,4-trichlorobenzene.

Company profiles & Consultancy

  • Company Profile from China.
  • Polyphosphazene manufacturer.
  • Polyphosphazene expert.

Study

  • Influence of different iodide salts on the performace of dye-sensitized solar cells containing phosphazene.
  • Effect of molecular motions on thrombogenesis.
  • Lability of chloride on polyphosphazenes bearing bulky substituents.
  • Immunoprotective effect of CpG-ODN by formulation with polyphosphazenes.
  • Synthesis and effect of polyphosphazenes.
  • Polyphosphazenes enhance mucosal and systemic immune responses.
  • Polyphosphazene based polymer electrolyte membrane fuel cells.
  • Enhanced energetic polyphosphazenes.
  • Photochromic Polyphosphazenes with spiropyran units.
  • Water-Soluble biodegradable cationic polyphosphazenes for gene delivery.

Report

  • Characterization of polyphosphazene with coumarin as side group.
  • Cyclo and polyphosphazenes containing 2-oxypyridiine moieties coordinated to selected transition metals.
  • Phase separation of polyphosphazene.
  • Controlled formation of carboxylic acid groups at polyphosphazene surfaces.

Uses

  • Polyphosphazenes as biodegradable vectors for gene delivery.
  • Applications of polyphosphazenes.
  • Polyphosphazenes for aircraft fire-resistant applications.
  • Flame-retardants for aircraft applications.

 

 

 

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