Section: STEM · ChemistryDifficulty: Medium

Polymer

USUK
US/ˈpɑləmər/UK/ˈpɒləmə/

A large molecule composed of many repeated smaller units called monomers.

Also: macromolecule

Definition

A polymer is a large macromolecule made up of many repeating structural units called monomers, linked together by covalent bonds. Polymers can be natural, such as DNA, proteins, and cellulose, or synthetic, such as nylon, polyethylene, and silicone. Their properties depend on the type of monomers, chain length, and degree of cross-linking, making them incredibly versatile materials.

Example

Polyethylene, the most widely produced plastic in the world, is made by linking thousands of ethylene monomers into long chains; it is used to make plastic bags, bottles, and food packaging.

Usage Examples

  1. 1

    The team applied polymer best practices to improve their chemistry outcomes significantly.

  2. 2

    Understanding polymer is essential for anyone building a career in STEM.

When & How to Use

Use 'Polymer' when working in Chemistry contexts where a polymer is a large macromolecule made up of many repeating structural units called monomers, linked together by covalent bonds.

  • Applying polymer principles during a chemistry project or initiative
  • Explaining polymer to a junior team member or stakeholder unfamiliar with STEM
  • Evaluating options or proposals using polymer as a decision-making criterion

Etymology & Origin

The term 'Polymer' derives from professional usage and entered STEM professional usage as the field formalised in the 20th century.

History & Evolution

The concept of polymer has evolved alongside STEM. Early practitioners relied on informal methods; structured approaches emerged with the professionalisation of chemistry in the mid-20th century. Today, polymer is a standard part of STEM practice globally.

Synonyms

  • macromolecule
  • chain molecule
  • polymeric material

Antonyms / Opposites

  • monomer
  • small molecule

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  • Monomer
  • Polymerization
  • Protein
  • DNA

Dictionary Entry

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