Question

Which of the following sets contain only thermoplastics?
a.) Glyptal, Melmac, PAN
b.) Polythene, Bakelite, Nylon - 6
c.) PVC, PMMA, Polystyrene
d.) Polypropylene, urea formaldehyde, Teflon

Answer 1

Hint: Try to find out the properties of the given materials. Compare those properties with the properties of the thermoplastic and analyze to find out the correct set of materials.

Complete step by step answer:
Thermoplastic is also called as the thermo softening plastic which is defined as the plastic polymer that becomes moldable (becomes soft) when it is exposed to a certain temperature and solidifies or becomes hard upon cooling it. It is the recyclable material. The internal forces that help the polymeric chains to associate will become weak when we heat then at a certain temperature or they are exposed to the certain temperature.
Examples of the thermoplastic materials are polythene, polypropylene, PVC (poly vinyl chloride), polystyrene, polyamides, polyesters, polyurethanes etc.
The molecular weight of most of the thermoplastics is high. These thermoplastics can be heated and cooled several times without any change in the chemical or the mechanical properties.
As we discussed above Poly vinyl chloride (PVC), Poly methyl methacrylate (PMMA), and polystyrene are the materials that are having the properties of the thermoplastics.
 So, the correct answer is “Option C”.

Note: There are a huge variety of applications for these thermoplastics. As they are recyclable materials they can be made use of and through materials. CDs, DVDs, drinking water bottles etc are made up of thermoplastic materials only. These things can also be reused this ultimately reduces the use of plastic materials which is non-biodegradable and causes environmental pollution.