Question

today Life Without Plastic cannot be imagine. be at home or outside, plastic is everywhere. collect information on the following plastics(Teflon, Bakelite,melamine, PVC). write about there methods of preparation, monomers, properties, advantages and disadvantages. are there any innovative ways to despose of plastic waste in india? compare with china.

Answer 1

ANSWER :

Teflon -

The monomer of teflon is tetrafluoroethene.

It is made by the polymerisation of its monomer.

It is non sticky.

Bakelite -

Formaldehyde as well as phenol are the monomers.

It is used in making utensils.

Melamine -

The monomers are : formaldehyde and melamine.

It is used in manufacturing dinnerware.

PVC -

Vinyl chloride is the monomer.

It is used in manufacturing raincoats, bags, etc.

Answer 2

Teflon :

Formula of the monomer of polythene is CH2=CH2 (ethene)

Formula of the monomer of Teflon is CF2=CF2 (tetrafluoroethene)

n CH2=CH2 -----> ---(CH2---CH 2 )n---

Ethene Polythene

nCF2 =CF2 ------>---[---CF2---CF2--]n---

Tetrafluoroethene Teflon or polytetrafluoroethene

It is used to make containers and also employed in pipeworks for the reactive chemicals.

2) PVC :

Polyvinyl chloride or PVC is a polymer which is formed by the combination of large number of vinyl chloride monomer units.

It is used in construction, as an insulation on electric wires, as PVC Ceiling Tiles etc.

3) Bakellite :

Bakelite is a thermosetting plastic (phenol-formaldehyde resign). It is used for making TV cabinets, telephone components, billiard ball, bearings, electrical goods etc.

It is prepared by the polymerisation reaction between formaldehyde and phenol.