Which of the following are characteristics of cross-linked polymers?

High melting point

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Low melting point

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Hard

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Brittle

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Solution

The correct options are
A High melting point
C Hard
A cross-link is a bond that joins one polymer chain to another. These bonds can be both covalent as well as ionic.

Vulcanisation of rubber is an example of a cross-link formation.

Cross-linked polymers are usually mechanically and thermally stable because of the crosslink. So, crosslinked polymers are hard and have a high melting point.

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Similar questions

Which of the following are characteristics of thermosetting polymers?

(a) Heavily branched cross linked polymers

(b) Linear slightly branched long chain molecules

(d) Soften on heating and harden on cooling, can be reused

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