Unzipping is depolymerization occurring by a
sequence of reactions, progressing along a
macromolecule and yielding products, usually
monomer molecules at each
reaction step, from which macromolecules similar to the original can be regenerated.
Source:
PAC, 1996, 68, 2287
(Glossary of basic terms in polymer science (IUPAC Recommendations 1996))
on page 2309