Why Phosphazene is called inorganic rubber?

Why Phosphazene is called inorganic rubber?

One particular compound, poly(dichlorophosphazene), came to be known as “inorganic rubber” because of the similarity of many of its mechanical properties to those of natural rubber.

What is Phosphazene system?

From Wikipedia, the free encyclopedia. Phosphazenes refer to classes of organophosphorus compounds featuring phosphorus(V) with a double bond between P and N. One class of phosphazenes have the formula RN=P(NR2)3. These phosphazenes are also known as iminophosphoranes and phosphine imides. They are superbases.

How is Phosphazene synthesized?

Poly(alkyl/aryl)phosphazenes [NPR2]n with the organic substituent directly attached via a P–C bond from [NPCl2]n can be synthesised via substitution with suitable organic nucleophiles such as RMgX or RLi.

What are Polyphosphazene used for?

Phosphazenes are also used as surface coatings and composite materials. Derivatives have been synthesized to be inert in biological media and are known to function well subcutaneously. High Performance: Polyphosphazenes are used as flame retardants, additives, performance polymers, and in specialty applications.

What is Phosphazene explain the nature of bonds in Triphosphazene?

The bonds between the phosphorus and nitrogen in phosphazenes are best described as having a significant ionic component with each of the N atoms having a negative charge and each of the phosphorus atoms having a positive charge. apsiganocj and 1 more users found this answer helpful. Thanks 0.

Which one is known as inorganic rubber?

into an amorphous substance which is insoluble and infusible, and whose mechanical properties are similar to those of rubber. It is, for this reason, generally known as inorganic rubber. Rubber Division, American Chemical Society, Inc.

What is inorganic polymer in chemistry?

An inorganic polymer is a polymer with a skeletal structure that does not include carbon atoms in the backbone. Polymers containing inorganic and organic components are sometimes called hybrid polymers, and most so-called inorganic polymers are hybrid polymers.

What is oxidation state of nitrogen in Phosphazene?

The phosphazene compounds described here in this section are considerably less sensi- tive to oxygen compared with trivalent organophosphorus compounds, because the phos- phorus atom in phosphazenes is in its maximum (+5) oxidation state.

How is NPCl2 3 Prepared?

Hexachlorophosphazene is an inorganic compound with the formula (NPCl2)3. The molecule has a cyclic backbone consisting of alternating phosphorus and nitrogen atoms. Hexachlorophosphazene together with the related (NPCl2)4 are precursors to inorganic polymers called polyphosphazenes.

Why Phosphonitrile are known as Phosphazenes?

*Phosphazenes are a class of chemical compounds in which a phosphorus atom is covalently linked to a nitrogen atom by a double bond and to three other atoms or radicals by single bonds. *Phosphazenes are also knownas iminophosphoranes and phosphonitriclic imides.

What do you know about inorganic polymer?

An inorganic polymer is a polymer with a skeletal structure that does not include carbon atoms in the backbone. Inorganic polymers offer some properties not found in organic materials including low-temperature flexibility, electrical conductivity, and nonflammability.

What is inorganic rubber?

into an amorphous substance which is insoluble and infusible, and whose mechanical properties are similar to those of rubber. It is, for this reason, generally known as inorganic rubber.

What is the use of polyphosphazene in membrane?

Membrane: 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.

How to isolate poly (organo)phosphazenes?

Although not exclusive, by far the most widely used route to poly (organo)phosphazenes is via the precursor poly (dichloro)phosphazene [NPCl2]n ( Fig. 3 ). Due to its high reactivity, this intermediate can only be isolated under anhydrous conditions and must be carefully stored or immediately reacted further.

What is polyphosphazene (PEM)?

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.

How many phosphazene derivatives are there?

There are over 700 known phosphazene derivatives, many of which have been custom-configured for end applications or value added characteristics.

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