Science explained

Polymers and plastics

Polymers are long-chain molecules whose composition and structure create a wide range of flexible, rigid, clear, tough or heat-resistant materials.

MaterialsPolymers

Editorial review: August 12, 2026 · Julian E. Marston

Monomers become chains

Chemical reactions connect smaller molecular units into long structures.

Chain arrangement matters

Branching, crystallinity and cross-linking influence material properties.

Additives change performance

Pigments, plasticizers, stabilizers and fillers can modify behaviour.

Recycling depends on chemistry and system design

Different polymer types and mixed products are not equally easy to recycle.

This page explains scientific concepts for general learning. It does not replace laboratory safety procedures, professional engineering guidance, or individualized medical advice.