Which biodegradable polymer was first used for post-operative stitches?

Nylon$-2-$nylon$-6$ is a co-polymer of $6-$aminohexanoic acid and

Synthetic polymers do not degrade in the environment for a long time. How can biodegradable synthetic polymers be made? Differentiate between biopolymers and biodegradable polymers and give examples of each type.

Select the incorrect option for the following polymer:

On complete hydrogenation,natural rubber produces

Which polymer is used as a lubricant and an insulator?