In the following model, the carbon atoms are dark gray, hydrogen is cyan and oxygen is red.
In the following model, the carbon atoms are dark gray and hydrogen is cyan and oxygen is red.
The following model is a segment of the rubber polymer. The carbon atoms are dark gray and hydrogen is cyan. The magenta colored bonds at either end represent locations at which the chain continues. Note the curved and kinked nature of the polymer chain. In the initial display the double bonds are oriented gauche to each other on the -CH2CH2- segments. The second coiled conformer has the double bonds oriented in an anti relationship.