atactic macromolecule

https://doi.org/10.1351/goldbook.A00488
A regular macromolecule in which the configurational (base) units are not all identical.
Source:
PAC, 1996, 68, 2287. 'Glossary of basic terms in polymer science (IUPAC Recommendations 1996)' on page 2292 (https://doi.org/10.1351/pac199668122287)