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LYOPHOBE [6 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2004-05-13

English

Subject field(s)
  • Chemistry
DEF

Referring to a substance in a colloidal state that has a tendency to repel liquids.

French

Domaine(s)
  • Chimie
DEF

Se dit des colloïdes qui ne sont pas lyophiles.

OBS

lyophile : se dit d'une substance qui, ayant perdu ses qualités par lyophilisation, peut les retrouver intactes par l'addition du solvant nécessaire.

Spanish

Campo(s) temático(s)
  • Química
DEF

Dícese de los coloides que no son liófilos.

OBS

liófilo: sustancia que al contactar con un medio dispersante, forma espontáneamente una disolución coloidal termodinámicamente estable, debido a la afinidad por medio de sus partículas coloidales.

Save record 1

Record 2 2002-11-21

English

Subject field(s)
  • Hydrology and Hydrography
  • Geology
OBS

Describes a colloid which is dispersed only with difficulty, yielding an unstable solution which cannot be re-formed after coagulation.

French

Domaine(s)
  • Hydrologie et hydrographie
  • Géologie
OBS

Qualifie un colloïde dont les phases dispersante et dispersée ont peu d'affinité.

Spanish

Campo(s) temático(s)
  • Hidrología e hidrografía
  • Geología
Save record 2

Record 3 2001-10-12

English

Subject field(s)
  • Chemistry
  • Geochemistry
DEF

... a substance in a colloid state that has a tendency to repel liquids.

French

Domaine(s)
  • Chimie
  • Géochimie
DEF

Solution colloïdale dont la phase dispersée est un solide et qui précipite par adjonction d'une faible quantité d'électrolyte.

Spanish

Campo(s) temático(s)
  • Química
  • Geoquímica
Save record 3

Record 4 1998-03-27

English

Subject field(s)
  • Chemistry
DEF

A molecular group which possesses exophilic behaviour with respect to a liquid phase. [Definition standardized by ISO.]

OBS

lyophobic group: term standardized by ISO.

French

Domaine(s)
  • Chimie
DEF

Groupement moléculaire ayant un comportement exophile vis-à-vis d'une phase liquide. [Définition normalisée par l'ISO.]

OBS

groupement lyophobe : terme normalisé par l'ISO.

Spanish

Save record 4

Record 5 1997-02-12

English

Subject field(s)
  • Chemistry
DEF

A colloidally stable mixture of a lyophobic and a lyophilic colloid.

French

Domaine(s)
  • Chimie
DEF

Un mélange colloïdalement stable de colloïdes lyophobes et lyophiles.

Spanish

Save record 5

Record 6 1997-01-15

English

Subject field(s)
  • Chemistry
CONT

A lyophobic colloidal system is one which is intrinsically unstable with respect to aggregation of the colloidally dispersed materials into macroscopic phases.

OBS

Lyophobic systems which coagulate only very slowly are sometimes referred to as stable. A better word, "diuturnal" has been used by Mysels. It describes such systems more accurately as having a life-time long compared to the period of observation. Preferably this word should be used, together with its antonym, "caducous" where appropriate, in the description of lyophobic systems, rather than the terms stable and unstable. ... However, lyophobic systems must be prepared either by aggregation of molecularly dispersed material or by subdivision of coarse material. Even during the preparation provision must be made to prevent aggregation of the newly formed particles.

French

Domaine(s)
  • Chimie

Spanish

Save record 6

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