Saved Bookmarks
| 1. |
How does the presence of double bonds in rubber molecules influence their structure and reactivity ? |
Answer» SOLUTION :Natural rubber is CIS - polyisoprene and is obtained by 1,4- POLYMERIZATION of isoperene units. In this polymer , double bonds are located between `C_2` and `C_3` of each isoprene unit . These cis- double bonds do not allow the polymer chains to COME closer for effective interactions and hence intermolecular forces are quite WEAK. As a result, natural rubber , i.e., cis-polyiosoprene has a randomly coiled structure as hence shows elasticity.
|
|