What are 4 properties of polymers?
Properties of polymers such as high tensile strength, strain, elasticity, toughness determine their uses. More complex polymers form strong bonds, and hence, they are strong enough to withstand high force and pressure.
What are the properties of each polymer?
Polymer properties
- chemically unreactive.
- solids at room temperature.
- plastic – they can be moulded into shape.
- electrical insulators.
- strong and hard-wearing.
How do you explain polymers to kids?
Polymers are very big molecules made up of many smaller molecules layered together in a repeating pattern. In fact, the word polymer is Greek for ‘many parts. ‘ The smaller molecules that come together to form polymers are called monomers–small units that link together over and over to form a large polymer.
What are the properties and structures of polymers?
Polymers always have at least two phases namely, amorphous and crystalline. It is not its Tg, but rather its crystallinity that determines whether the material is a plastic or rubber. The crystals (hard phases) and rubbery (soft phases) make the PE behave as a plastic with toughness, and not as a rubber.
What are the properties of polymers and give its implication?
Polymers have time-dependent mechanical properties. They have features of both elastic solids and viscous fluids and their properties, unlike metals and ceramics, change with the time scale of the test. This behaviour is known as ‘viscoelasticity’.
What are polymers easy explanation?
A polymer is any of a class of natural or synthetic substances composed of very large molecules, called macromolecules, which are multiples of simpler chemical units called monomers. Polymers make up many of the materials in living organisms and are the basis of many minerals and man-made materials.
What determines the properties of polymers?
Polymer properties are strongly linked to the molecular weight and the molecular weight distribution. As an example, Figure 1 shows the effect on molecular weight on physical properties. A polymer such as polystyrene is stiff and brittle at room temperature with a degree of polymerization of 1,000.
What are the two important properties of polymers in terms of structure?
Why different polymers have different properties?
Varying the molecular structure and length of polymer chains or networks results in different polymers with different properties—such as strength, flexibility, heat resistance and recyclability.
Why do different polymers have different properties?
Why do different polymers have different properties? Answer: They have different chemical compositions (different monomer units), different structures, different ways of being fabricated, etc.
How do polymers have different physical properties give examples?
How do polymers have different physical properties? Give examples. In polymers, monomers are bonded, by different molecular interactions. Nature of these interactions, yield polymers of varying elasticity, tensile strength, toughness, thermal stability, etc.
Do all polymers have the same properties?
What do properties of polymers depend on?
The physical properties of a polymer such as its strength and flexibility depend on chain length, side groups present, branching, and cross-linking.
How do polymers have different physical properties and give examples?
What are the mechanical properties?
Mechanical properties are physical properties that a material exhibits upon the application of forces. Examples of mechanical properties are the modulus of elasticity, tensile strength, elongation, hardness and fatigue limit.
What are the physical and chemical properties of polymers?
Melting point, boiling point, strength, hardness, density, color, opaqueness, transparency, and electrical conductivity are among the physical properties they might mention. Chemical reactivity such as combustion and biodegradability are common chemical properties.
What are the properties of plastic?
Properties of Plastics 1 They are light in weight and is chemically stable. 2 Easily moulded into different shapes and sizes. 3 Good insulation and low thermal conductivity. 4 Good impact resistance and they do not rust. 5 Good transparency and wear resistance. 6 Poor dimensional stability and can be easily deformed. 7 Low processing cost.
What are the properties of PVC polymer?
Key Properties of PVC Polymer. PVC is a very versatile and cost-effective material. Its main properties and benefits include: Electrical Properties: PVC is a good insulation material, thanks to its good dielectric strength. Durability: PVC is resistant to weathering, chemical rotting, corrosion, shock and abrasion.
How does the structure of a polymer affect its properties?
Monomers with different structures produce polymers with different types of intermolecular bonds. The structure of a polymer influences its use and properties. Suggest that students bring in samples of any plastic material, washed and cleaned.
How can I teach polymer chemistry?
Monomers with different structures produce polymers with different types of intermolecular bonds. The structure of a polymer influences its use and properties. Suggest that students bring in samples of any plastic material, washed and cleaned. Collect plastic samples yourself for use in the session.