# How do you polymerize butanol and what is the polymer that is produced by this reaction?

Polyesters are formed from $\alpha , \omega$-diacids, and $\alpha , \omega$-dialcohols; polyamides from $\alpha , \omega$-diacids, and $\alpha , \omega$-diamines. You need a functional group on EACH end of the molecule in order to propagate a long organic chain.