Answer
Verified
37.2k+ views
Hint: Thermoplastic polymers do not have cross-linkage which breaks as they usually melt on heating but they have linear or branched structures. Thermosetting polymers have cross-linkage.
Step-by-Step Explanation:
Thermoplastic polymers are the plastic polymers which can be softened and melted by heating but they set again on cooling. They have a linear or branched long chain of molecules. They often melt on heating and become soft. When they are in their molten form, they can be remolded in any shape. Once they are cooled, they set again. This is all true. They do not have cross-linkage and network like structure. Thermosetting polymers are the polymers that have cross-linkage which breaks on heating. Hence, option D is not true. And we are asked which one is not true.
Here the correct option is ‘D’.
Additional Information: Thermosetting polymers are the polymers that have cross-linkage and network like structure. That’s why thermosetting polymers once cooled after heating cannot be remolded in any shape again even when heated. Some facts about thermoplastic polymers-
Thermoplastic polymers due to its softening property are also called thermo-softening polymers.
They are strong, brittle and resistant to chemicals.
Some examples of thermoplastic polymers are- polythene, acrylic, nylon, Teflon, polystyrene, polyvinyl chloride and polypropylene.
Note: Thermoplastics are all around us and are such a part of daily life that we don’t even notice them. Thermoplastic polymers are used in cutlery handles, toilet seats and cisterns. They are used in aircraft and car parts, in packaging and storage materials like packaging film. They are used in insulating foam and carpet and stockings. Thermoplastic polymers are used for manufacture of pipes, ropes, belts, insulators and adhesives
Step-by-Step Explanation:
Thermoplastic polymers are the plastic polymers which can be softened and melted by heating but they set again on cooling. They have a linear or branched long chain of molecules. They often melt on heating and become soft. When they are in their molten form, they can be remolded in any shape. Once they are cooled, they set again. This is all true. They do not have cross-linkage and network like structure. Thermosetting polymers are the polymers that have cross-linkage which breaks on heating. Hence, option D is not true. And we are asked which one is not true.
Here the correct option is ‘D’.
Additional Information: Thermosetting polymers are the polymers that have cross-linkage and network like structure. That’s why thermosetting polymers once cooled after heating cannot be remolded in any shape again even when heated. Some facts about thermoplastic polymers-
Thermoplastic polymers due to its softening property are also called thermo-softening polymers.
They are strong, brittle and resistant to chemicals.
Some examples of thermoplastic polymers are- polythene, acrylic, nylon, Teflon, polystyrene, polyvinyl chloride and polypropylene.
Note: Thermoplastics are all around us and are such a part of daily life that we don’t even notice them. Thermoplastic polymers are used in cutlery handles, toilet seats and cisterns. They are used in aircraft and car parts, in packaging and storage materials like packaging film. They are used in insulating foam and carpet and stockings. Thermoplastic polymers are used for manufacture of pipes, ropes, belts, insulators and adhesives
Recently Updated Pages
If a wire of resistance R is stretched to double of class 12 physics JEE_Main
The path difference between two waves for constructive class 11 physics JEE_MAIN
What is the difference between solvation and hydra class 11 chemistry JEE_Main
IfFxdfrac1x2intlimits4xleft 4t22Ft rightdt then F4-class-12-maths-JEE_Main
Sodium chloride is purified by passing hydrogen chloride class 11 chemistry JEE_Main
Consider the following oxyanions PO43P2O62SO42MnO4CrO4S2O52S2O72 class 11 chemistry JEE_Main
Other Pages
Formula for number of images formed by two plane mirrors class 12 physics JEE_Main
Differentiate between homogeneous and heterogeneous class 12 chemistry JEE_Main
Explain the construction and working of a GeigerMuller class 12 physics JEE_Main
A currentcarrying coil is placed in a magnetic field class 12 physics JEE_Main
In the given circuit the current through the 5mH inductor class 12 physics JEE_Main
In a family each daughter has the same number of brothers class 10 maths JEE_Main