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Most scientists just use either a resistance meter (also called an ohmmeter because the units it measures in are ohms) or a conductivity meter. A conductivity meter measures the ability of something to flow current, not the ability of it to resist current flow. You use one when you're dealing with extremely high resistances--in the hundreds, or thousands, of megohms. The unit for conductivity is the Mho--"ohm" spelled backwards.
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Why do polymers such as polystyrene and polyethylene have different properties?
The structure of a molecule affects its properties in a number of ways. The structure says what can bond with it.
Why are polymers bad conductors?
Polymers are generally poor conductors of electricity because their molecular structure lacks free-moving charged particles, such as electrons or ions, which are essential for electrical conduction. Most polymers are made up of long chains of covalently bonded atoms, resulting in a stable, non-conductive structure. Additionally, the insulating properties of polymers stem from their high resistance to the flow of charge. However, certain polymers can be modified or doped to enhance their conductivity for specific applications.
How are nature polymers and synthetic polymers similar?
Nature polymers and synthetic polymers are both large molecules made up of repeating units called monomers. They both have high molecular weights and exhibit similar properties like flexibility, strength, and durability. Additionally, both nature and synthetic polymers can be engineered to have specific properties for various applications.
Is there any subgroups of polymers?
Yes, polymers can be broadly categorized into natural and synthetic polymers. Synthetic polymers can further be classified based on their chemical structure and properties, such as thermoplastics, thermosets, elastomers, and fibers. These classifications help in understanding the different characteristics and applications of polymers.
What is the difference between conducting polymer and conjugated polymers?
All the polymer can not be made electrically conductive unless there are sufficient charge carriers available within the polymer itself. These charge carriers are responsible for conduction of electrical current. There is hardly a difference between a conducting polymer and conjugated polymer. The conjugated polymers have alternate single and double bond. Moreover, all conjugated polymers are conducting polymers. Their conductivity is increased on adding a suitable impurity in order to make free charge carriers.
What has the author Anthony Blythe written?
Anthony Blythe has written: 'Electrical properties of polymers' -- subject(s): Polymers, Electric properties
What has the author T Hatakeyama written?
T. Hatakeyama has written: 'Thermal properties of green polymers and biocomposites' -- subject(s): Polymers, Biodegradation, Thermal properties
Why do polymers such as polystyrene and polyethylene have different properties?
The structure of a molecule affects its properties in a number of ways. The structure says what can bond with it.
Are all polymers man made?
No, not all polymers are man-made. Some polymers can be found in nature, such as proteins, cellulose, and DNA. These natural polymers have unique properties and functions in living organisms.
What are photo conductive polymers?
photoconductive polymers are materials that change their electrical conductivity when subject to light (infra red- visible - ultraviolet - gamma). They are mainly used in photocopiers and holography.
What does a multimeter test and how?
It depends on the meter. Generally they test amperage, voltage and resistance. Some also test diodes and and various other electrical properties. How it is done is called electrical theory and is far too large a subject to cover here.
Why are polymers bad conductors?
Polymers are generally poor conductors of electricity because their molecular structure lacks free-moving charged particles, such as electrons or ions, which are essential for electrical conduction. Most polymers are made up of long chains of covalently bonded atoms, resulting in a stable, non-conductive structure. Additionally, the insulating properties of polymers stem from their high resistance to the flow of charge. However, certain polymers can be modified or doped to enhance their conductivity for specific applications.
Are polymers good insulators?
Yes, polymers can be good insulators because they have high electrical resistivity compared to metals. This property makes them useful in applications where electrical conductivity needs to be minimized, such as in the insulation of electrical wires or in electronic components.
How are nature polymers and synthetic polymers similar?
Nature polymers and synthetic polymers are both large molecules made up of repeating units called monomers. They both have high molecular weights and exhibit similar properties like flexibility, strength, and durability. Additionally, both nature and synthetic polymers can be engineered to have specific properties for various applications.
What has the author Evaristo Riande written?
Evaristo Riande has written: 'Dipole moments and birefringence of polymers' -- subject(s): Dipole moments, Double Refraction, Electric properties, Optical properties, Polymers
What has the author P Chevassus written?
P. Chevassus has written: 'Aging properties of cable polymers (II)' -- subject(s): Polymers
Is there any subgroups of polymers?
Yes, polymers can be broadly categorized into natural and synthetic polymers. Synthetic polymers can further be classified based on their chemical structure and properties, such as thermoplastics, thermosets, elastomers, and fibers. These classifications help in understanding the different characteristics and applications of polymers.
