Question

Gutta percha is:

• A. trans-Polyisoprene
• B. cis-Polyisoprene
• C. Polyethylene
• D. Polypropylene

Hint:

Gutta percha's rigid nature due to its trans-polyisoprene structure is what makes it useful for non-elastic applications, in contrast to rubber's flexible nature.

Answer 1

The Correct Option is A

Gutta percha is a naturally occurring latex compound that is derived from the sap of certain trees in the genus Palaquium, mainly found in Southeast Asia. It is a type of polyisoprene, specifically in the trans-configuration. This polymer is similar to rubber but with a different molecular arrangement.

In the case of gutta percha, the polymer chains adopt the trans configuration, which gives the material its rigidity and high tensile strength. This is why it is commonly used in dental and medical applications, as well as in cables and insulation.

In contrast, the cis configuration of polyisoprene, as seen in natural rubber, leads to a more elastic material with a lower melting point.

Thus, the correct answer is (A) trans-Polyisoprene.