Question

Give three advantages of polythene over natural materials?

Answer 1

Polyethylene, often known as polythene or polyethene, is a type of plastic that is widely used around the world. Polythenes are known to be additional polymers and have a linear structure. Packaging is the most common use for these synthetic polymers.

Complete answer:
Advantages of polythene over natural materials are:
It is possible to roll plastic into sheets.
They can withstand water.
Flexible and long-lasting
Physical properties of Polythene
Polyethylene's mechanical strength is lower than that of other polymers. These polymers' stiffness and hardness are likewise relatively low.
Polyethylene is well-known for its ductility. In addition, this plastic is noted for having a high impact strength.
When subjected to constant stress, this synthetic polymer exhibits significant creep.
Polyethylene is typically waxy in texture.
Chemical Properties of Polythene
Nonpolar saturated hydrocarbons with extremely high molecular weights make up polyethylene. This is thought to be the reason why polyethylene's chemical characteristics are so close to those of paraffin. Individual polyethylene macromolecules are not joined by covalent bonds.
Polyethylene is mostly used in packaging film, rubbish bags, supermarket bags, wire and cable insulation, agricultural mulch, bottles, toys, and houseware. Trays, fruit juice containers, milk containers, crates, and food packaging products are all made of polythene.

Note:
Ethylene is the monomer that makes up the majority of polyethylene. The chemical molecule ethylene has the formula ${C_2}{H_4}$. It is a gaseous hydrocarbon produced by the cracking of ethane. Ethylene molecules are made up of two methylene units joined by a double bond between the two carbon atoms.