Many human being may not wonder around it, yet rubber is, theoretically, a pretty fascinating substance. Native its inception, it was an ext of a novelty than a useful type of latex. However, v time, noteworthy inventors choose Charles Goodyear and also Michael Faraday made far-reaching improvements in the moulding and also activation of natural rubber, at some point leading to the advancement of our favourite polymers in electronics today.

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When we talk about the nature of rubber, among the most common questions is whether rubber conducts electricity or not. Most human being have one idea that steels conduct electricity while insulators such together plastic and also wood carry out not. The reality is more than meets the eye.

So, walk rubber conduct electricity? No, rubber does no conduct electricity. Its an extensive chain-like polymer structure stays clear of the electrons from moving freely. This is as result of the strong bonding of electrons in its valence shell that borders the transfer of electrical current.

In rarely cases, the conductivity that rubber counts on the supporting material(carbon or metallic substances). If that contains complimentary electrons, it might make rubber contempt conductive. Even so, this reactions require assistance, high temperature, and also voltage because that charged ions/electrons come oscillate freely.

Further, permit us discuss Rubber and its main feature: electrical Insulation.

What is Rubber?

Rubber, also known together cis-polyisoprene, is a polymer created through the polymerization the cis-1, 4-polyisoprene. That is completely made that carbon and also hydrogen atoms (C 5 H 8).

Origin: It’s discovered most typically in latex, but likewise the sap native trees and other plants also as specific kinds that seaweed.

Uses: it is additionally mixed with different substances to develop different varieties of rubber such as Nitrile, EPDM, Butyl, etc.

Its elasticity makes it advantageous for a variety of products, an especially those offered for sporting goods, bumpers, and also tires. That is very resistant to tear or rupture over time.

Types of Rubber

Types: following are the 2 broad species of rubber:

1. Natural rubber (or India rubber): it is well-known as latex, a milky white juice that oozes from cuts in trees. This process is referred to as “tapping”. That contains tiny amounts (5%) of proteins, resins, inorganic salts, and even fatty acids.

Its structure provides it comparable to silicone and also gutta-percha. That is synthesized with conjugated diene((2-methyl-1,3-butadiene), also known together monomer isoprene. The dual bonds in it space in z configuration, improving its elasticity.


2. Synthetic rubber (Neoprene): the is an artificial elastomer because that which crude oil and also petrochemicals offer as the life material. That is developed with a combination of the complying with conjugated dienes:

Isoprene (2-methyl-1,3-butadiene)1,3-butadiene,Chloroprene (2-chloro-1,3-butadiene)


Additional nature of Rubber

Hard structure due to chemical composition (van der Waals forces)High tensile strengthHigh abrasion resistanceThe resistivity of tough rubber in ~ 20 levels C quantities up to (1-100) x 10¹³ ohm m and conductivity stays zero.

Why does no Rubber conduct electricity?


To understand this, let’s analysis the molecular structure and also composition of rubber:

Chemical Formula :

2-methyl-1,3-butadiene, < CH-2=(CH-3)CH-CH=CH-2 >

1. Rubber is a hydrocarbon making up hydrogen and twin bonds the carbon. The proportion of carbon come hydrogen atoms constantly exists together 5:8.

2. In addition, its non-metallic structure is organized with covalent bonds having actually primary units of polymers(monomers). This units space entangled in a lengthy chain formation.

3. That is atomic type is deprived of totally free electrons (conduction bands or fee carriers) in the outer shell. Therefore, there space no electron to jump from one atom to an additional for a smooth circulation of electrical current.

4. On a comparable note, according to tape theory, rubber has only sigma binding (strong covalent bonds) in addition to delicate pi bonds (non-overlapping) in the low power valence band. Thus, causing an empty greater energy tape (zero complimentary electrons).

5. These pi binding exist at positions favor 2,6,10 and are not conversely creating a large energy gap in between the 2 bands. Together a result, all the bonding electrons of the valence band continue to be positioned.

And when certain electrical voltage come is passed with the end of the rubber, the electrons in the valence withstand their activity to the conduction band, conducting nil electricity.

Moreover, the acts as an insulator till it’s heated past its electrical break down temperature. Till then, both varieties of rubber space bona fide electric insulators.

Exception: despite many products made indigenous rubber also contain other materials that can make them command electricity. Because that example, many rubbers offered in shoes – and also sometimes gloves and also wetsuits – are blended with carbon black, i beg your pardon conducts electrical power when combined with rubber.

This renders the rubber contempt conductive under unsure circumstances.

What is the difference in between a conductor and also an insulator?

Conductor: it is things that easily transfers heat, electricity, or sound native one atom come another. The molecules within it have actually an uneven circulation of electron that readily passes an electric existing and permits a huge amount of fee to flow through it.

Example: Copper wire, Graphite, human body (prone to electric shock), salts (aqueous solutions)

Insulator: the is identified as a substance that does not pass one electric existing easily, and permits only a negligible amount of fee to circulation through it under too much voltages. Otherwise, it opposes and also stores it.

Example: Glass, Rubber, Plastic, Wood, etc.

The terms conductor and insulator are based on the ability of a product to enable the motion of electric charge. The metals that us are used to dealing with in most circuitry are examples of conductors.

Insulators are frequently used in place of a steel where corrosion is a hazard since their literal objective is to stop the flow of electricity.

How deserve to you tell if a substance conducts electrical energy or not?


Conducting power essentially method a material deserve to let electric energy pass v it. It’s vital to understand that no all materials have this ability. Sometimes this counts on the form of material and also its components as well.

A conductor has actually mobile electrons and also atoms, a semiconductor has actually ions or feet of electrons and also an insulator is devoid of cell phone charges.

To be specific, listed below are the three aspects that identify conductivity and are dependent on the material’s nature.

1. Cost-free Ions: The compounds with strong conductivity break right into charged atoms or ions in water. They space bound in addition to attractive electrostatic forces and let the existing flow smoothly.

They are likewise deficient in carbon atoms. They room inorganic. On the contrary, insulators room inorganic and weak electrolytes in nature and contain carbon atoms.

2. Temperature: sudden temperature rise, increases the kinetic energy of ion in conductors compelling lock to relocate hastily.

But, in the case of rubber, temperature elevation will certainly not affect. However, it might deteriorate itself and also get discolored due to its polymer structure. The warmth affects the an extensive chains bring about vibration and also shrinkage.

3. Density: Low-density substances have greater electrical conductivity. For example alkali metals. Lock contain one cost-free electron in their external shells carrying current throughout your surface.


Rubber is a product that latex through its distinct properties that room used across different production industries. It likewise works as an insulator due to the fact that it doesn’t contain any totally free electrons to conduct electricity. Its internal structure provides individual electrons steady eliminating all methods for them come move easily carrying an electrical current.

It is a product made native the polymerization of number of compounds joined together in chains. Rubber is current in almost everything we do. Rubber from her car’s tires is the reason you, and other chauffeurs on the road, are safe when driving in bad weather and other conditions.

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Many world use it to seal windows, cars, and buildings indigenous the weather. They also use it because that boots, gloves, defense pads, balloons, mattresses, surgical gloves, and bandages together it offers comfort and also protection from electric shocks.