Definition

Noun A compound formed by the reaction of cellulose with an acid, where one or more of the hydroxyl (-OH) groups in the cellulose molecule are replaced by an ester group. This chemical modification alters the properties of the natural cellulose, often making it soluble in organic solvents and useful for creating films, fibers, and plastics.

Usage

"Cellulose ester" is a technical term used primarily in chemistry, materials science, and industrial manufacturing. It refers to a class of materials, not a single specific substance.

Examples

• The company produces a cellulose ester used as a binder in high-quality paints.
• Early photographic film was made from a flammable cellulose ester called cellulose nitrate.
• Researchers are developing new cellulose ester plastics from sustainable wood pulp.

Advanced Usage

• Specific types of cellulose esters are often named after the acid used in their production, such as or . In technical writing, "cellulose ester" can serve as a general category encompassing these specific compounds.

Variants and Related Words

• Cellulose acetate: A common, non-flammable cellulose ester used for photographic film, textile fibers (like rayon), and eyeglass frames.
• Cellulose nitrate (nitrocellulose): A highly flammable cellulose ester historically used in film stock, lacquers, and explosives.
• Esterification: (n) The chemical process of forming an ester, which is how cellulose esters are created.

Synonyms

• Cellulose derivative (This is a broader term that includes esters and other modified forms of cellulose.)

Notes

This term does not commonly appear in idioms or phrasal verbs due to its highly technical nature.

Noun

1. any ester of cellulose with an acid