Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

The Colloidal State01:29

The Colloidal State

The formation of a colloidal system is exemplified by an aqueous solution containing Cl− ions is introduced to another containing Ag+ ions, resulting in the precipitation of solid AgCl as extremely tiny crystals. Instead of settling out as a filterable precipitate, these crystals remain suspended in the liquid, showcasing a colloidal system.A colloidal system involves colloidal particles within the approximate range of 1 to 1000 nm in at least one dimension, dispersed in a medium called the...
Colloids03:22

Colloids

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
Colloids and Suspensions01:17

Colloids and Suspensions

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles visible to the naked eye or seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. The suspended particles in a suspension settle out after some time of mixing. The separation of particles from a suspension is...
Colloidal precipitates01:09

Colloidal precipitates

The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
Solubility03:00

Solubility

Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules, atoms, and/or ions)...
Coagulation01:06

Coagulation

Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Endothelium-dependent vasodilation is augmented by angiotensin converting enzyme inhibitors in healthy volunteers.

Journal of cardiovascular pharmacology·1992
Same author

Primary mediastinal diffuse large cell lymphoma initially presented with pericardial infiltration.

Internal medicine (Tokyo, Japan)·1992
Same author

Suppressive effect of prostaglandin E1, but not prostacyclin, on ouabain-induced ventricular fibrillation in guinea-pigs.

Fukushima journal of medical science·1992
Same author

A lymphocyte-specific protein tyrosine kinase, p56lck, regulates the PMA-induced internalization of CD4.

Biochimica et biophysica acta·1992
Same author

Contact hypersensitivity reaction to ovalbumin in newborn guinea pigs from maternally sensitized animals.

Journal of dermatological science·1992
Same author

Relationship between plasma atrial and brain natriuretic peptide concentration and hemodynamic parameters during percutaneous transvenous mitral valvulotomy in patients with mitral stenosis.

American heart journal·1992

Video Experimental Relacionado

Updated: Jul 12, 2026

Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

Estructura de vacío en las dispersiones coloidales.

K Ito, H Yoshida, N Ise

    Science (New York, N.Y.)
    |January 7, 1994
    PubMed
    Resumen

    Las estructuras de vacío en las dispersiones de látex de polímero crecen con el tiempo, formándose más rápido internamente que en las interfaces. Esto indica que la formación de vacíos es intrínseca, no un artefacto del límite de dispersión de vidrio.

    Área de la Ciencia:

    • La ciencia de los polímeros es la ciencia de los polímeros.
    • Ciencia de los materiales Ciencia de los materiales.
    • Ciencia de la coloide Ciencia de las coloides.

    Sus antecedentes:

    • Las dispersiones de látex de polímero se utilizan ampliamente en diversas aplicaciones.
    • Comprender la estabilidad y la evolución estructural de estas dispersiones es crucial para su rendimiento.
    • Los sistemas homogéneos pueden exhibir dinámicas internas complejas.

    Objetivo del estudio:

    • Para investigar la evolución en el tiempo de las estructuras de vacío en dispersiones de látex de polímero purificado.
    • Para determinar si la formación de vacíos está influenciada por la interfaz de dispersión de vidrio.
    • Explorar fenómenos similares en otros sistemas aparentemente homogéneos.

    Principales métodos:

    Más Videos Relacionados

    Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
    10:56

    Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

    Published on: May 20, 2014

    Fabrication of Zero Mode Waveguides for High Concentration Single Molecule Microscopy
    08:01

    Fabrication of Zero Mode Waveguides for High Concentration Single Molecule Microscopy

    Published on: May 12, 2020

    Videos de Experimentos Relacionados

    Last Updated: Jul 12, 2026

    Synthesis and Characterization of Supramolecular Colloids
    09:26

    Synthesis and Characterization of Supramolecular Colloids

    Published on: April 22, 2016

    Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
    10:56

    Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

    Published on: May 20, 2014

    Fabrication of Zero Mode Waveguides for High Concentration Single Molecule Microscopy
    08:01

    Fabrication of Zero Mode Waveguides for High Concentration Single Molecule Microscopy

    Published on: May 12, 2020

  • Se empleó microscopía de barrido láser confocal para observar estructuras de vacío in situ.
  • Se utilizaron dispersiones de látex de polímero altamente purificadas para el estudio.
  • Se permitió que las dispersiones se mantuvieran en el tiempo para observar los cambios estructurales.

    • Principales resultados:

    • Las dispersiones de látex de polímero inicialmente homogéneas desarrollaron vacíos con el tiempo.
    • Se observó que el crecimiento del vacío era más rápido en el material a granel en comparación con las regiones cercanas a la interfaz de dispersión de vidrio.
    • Se confirmó que la formación de vacíos es un proceso intrínseco, no un artefacto de la interfaz.

    Conclusiones:

    • La formación de vacíos en las dispersiones de látex de polímero es un proceso inherente dependiente del tiempo.
    • La interfaz de dispersión de vidrio no sólo impulsa la formación de vacíos.
    • Inhomogeneidades estructurales similares pueden ocurrir en otros sistemas de fluidos complejos como soluciones iónicas y películas.