Question

Which of the following is not a characteristic of thermosetting polymers?

• A. Linear or slightly branched long chain polymers.
• B. Heavily branched and cross-linked polymers.
• C. Become infusible on moulding.
• D. Cannot be remoulded or reused on heating.

Answer 1

The correct option is A Linear or slightly branched long chain polymers.

Some characters of thermosetting polymers:

• these polymers are cross-linked or heavily branched molecules,
• on heating it undergoes extensive cross-linking in moulds and again become infusible,
• these cannot be reused
  Some common examples are bakelite, melamine and urea formaldehyde resin