peptization

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peptization

A scientist uses peptization to prepare a colloidal solution in the lab.

Definition

Noun: 1. The process of converting a substance into a sol; the act of bringing a precipitate into a colloidal solution. This is a specific chemical process where aggregated particles are broken down into smaller, individual particles that remain dispersed in a liquid, forming a stable colloidal system.

Usage
  • Peptization is a technical term used primarily in chemistry, colloid science, and materials science.
  • It describes the deliberate dispersion of a solid (often a freshly formed precipitate) into colloidal-sized particles using a peptizing agent (like an electrolyte or surfactant).
  • The term is typically used in passive constructions (e.g., "the peptization of...") or to name the process itself.
Examples
  • The peptization of the clay suspension was achieved by adding a sodium phosphate solution.
  • A key step in the synthesis was the peptization of the titanium dioxide precipitate to form a stable nanocrystalline sol.
  • The experiment studied the factors affecting the peptization of silver iodide.
Advanced Usage
  • "Peptization agent" / "Peptizing agent": A substance added to facilitate peptization, often by providing ions that adsorb onto particle surfaces and create repulsive forces.
    • Ammonia is commonly used as a peptizing agent for aluminum hydroxide gels.
  • The opposite process, where colloidal particles come together to form a precipitate, is called coagulation or flocculation.
Variants and Related Words
  • Peptize (verb): To cause peptization; to disperse (a precipitate) into colloidal particles.
    • The researcher needed to peptize the sample to analyze its nanoparticle content.
  • Peptizer (noun): Another term for a peptizing agent.
  • Sol (noun): The type of colloidal dispersion formed by peptization, where solid particles are dispersed in a liquid.
Synonyms
  • Deflocculation (in specific contexts, though deflocculation often refers to breaking up loose aggregates, while peptization can involve breaking primary particles apart).
  • Colloidal dispersion.
Antonyms
  • Coagulation
  • Flocculation
  • Precipitation
  • Aggregation
peptization

A scientist uses peptization to prepare a colloidal solution in the lab.

Noun
  1. the process of converting to a sol; bringing to a colloidal solution

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