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

Conformations of Cyclohexane02:11

Conformations of Cyclohexane

Cyclohexane does not exist in a planar form due to the high angle and torsional strain it would experience in the planar structure. Instead, it adopts non-planar chair and boat conformations.
The chair form is the most stable and derives its name from its resemblance to the “easy chair.” In the chair conformation, two carbon atoms are arranged out-of-plane — one above and one below, minimizing the torsional strain. In the chair form, the bond angle is very close to the ideal tetrahedral value,...
[3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement01:21

[3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement

The Cope rearrangement is classified as a [3,3] sigmatropic shift in 1,5-dienes, leading to a more stable, isomeric 1,5-diene. The reaction involves a concerted movement of six electrons, four from two π bonds and two from a σ bond, via an energetically favorable chair-like transition state.
Radical Chain-Growth Polymerization: Mechanism01:09

Radical Chain-Growth Polymerization: Mechanism

The radical chain-growth polymerization mechanism consists of three steps: initiation, propagation, and termination of polymerization. The polymerization initiates when a free radical generated from the radical initiator adds to the unsaturated bond in the monomer. The unpaired electron of the free radical and one π electron in the unsaturated bond creates a σ bond between the free radical and the monomer. As a result, the other π electron in the unsaturated bond converts this species into the...
Anionic Chain-Growth Polymerization: Mechanism01:04

Anionic Chain-Growth Polymerization: Mechanism

The mechanism for anionic chain-growth polymerization involves initiation, propagation, and termination steps. In the initiation step, a nucleophilic anion, such as butyl lithium, initiates the polymerization process by attacking the π bond of the vinylic monomer. As a result, a carbanion, stabilized by the electron‐withdrawing group, is generated. The resulting carbanion acts as a Michael donor in the propagation step and attacks the second vinylic monomer, which acts as a Michael acceptor.
Cationic Chain-Growth Polymerization: Mechanism00:57

Cationic Chain-Growth Polymerization: Mechanism

The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization process, the π bond of a monomer gets protonated by the Lewis acid catalyst, which is formed from boron trifluoride and water. The protonation of the π bond generates a carbocation stabilized by the electron‐donating group. In the propagation step, the π bond of the second monomer acts as a nucleophile and attacks the generated carbocation,...
Step-Growth Polymerization: Overview01:03

Step-Growth Polymerization: Overview

Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
Many natural and synthetic polymers are produced by...

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Growth order of stiff and soft domains in gels controls morphology.

iScience·2026
Same author

Computer Simulations of Soft Responsive Gels with Embedded Regular Arrangements of Stiff Fibers.

Langmuir : the ACS journal of surfaces and colloids·2026
Same author

Chemical signaling in reaction networks generates corresponding mechanical impulses.

PNAS nexus·2025
Same author

A functionally complete logic gate in a soft photoresponsive hydrogel.

Nature communications·2025
Same author

Controlling the Dynamic Behavior of Microposts in Solution via Diffusion-Convection.

Langmuir : the ACS journal of surfaces and colloids·2025
Same author

Fluid mediated communication among flexible micro-posts in chemically reactive solutions.

Materials horizons·2024
Same journal

Erratum for the Research Article "Detecting supramolecular organic nanoparticles during heat wave".

Science (New York, N.Y.)·2026
Same journal

Local signals, systemic decline.

Science (New York, N.Y.)·2026
Same journal

The mechanics of liver regeneration.

Science (New York, N.Y.)·2026
Same journal

Computing in a memory with physics.

Science (New York, N.Y.)·2026
Same journal

Retraction.

Science (New York, N.Y.)·2026
Same journal

Making time.

Science (New York, N.Y.)·2026
Ver todos los artículos relacionados

Video Experimental Relacionado

Updated: Jun 29, 2026

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
16:24

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Published on: August 2, 2012

Formación de patrones y cambios de forma en geles de polímero autooscilantes.

Victor V Yashin1, Anna C Balazs

  • 1Chemical Engineering Department, University of Pittsburgh, Pittsburgh, PA 15261, USA.

Science (New York, N.Y.)
|November 4, 2006
PubMed
Resumen
Este resumen es generado por máquina.

Creamos un modelo computacional para geles sensibles, simulando deformaciones 2D y reacciones químicas. Este modelo revela patrones dinámicos de hinchazón y oscilaciones de forma en los geles, cruciales para la comprensión de los procesos quimiomecánicos.

Más Videos Relacionados

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
09:22

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

Published on: February 7, 2017

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
09:34

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Published on: February 6, 2020

Videos de Experimentos Relacionados

Last Updated: Jun 29, 2026

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
16:24

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Published on: August 2, 2012

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
09:22

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

Published on: February 7, 2017

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
09:34

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Published on: February 6, 2020

Área de la Ciencia:

  • La ciencia de los polímeros es la ciencia de los polímeros.
  • Ingeniería Química Ingeniería Química.
  • Modelado computacional y modelado computacional.

Sus antecedentes:

  • Los geles sensibles exhiben comportamientos complejos debido a las reacciones químicas internas y las deformaciones de la red.
  • Comprender estos procesos quimiomecánicos es clave para diseñar materiales avanzados.
  • Los modelos anteriores a menudo simplificaban los efectos 2D y la formación de patrones dinámicos.

Objetivo del estudio:

  • Desarrollar un modelo computacional eficiente para simular deformaciones 2D a gran escala en geles sensibles.
  • Para investigar la interacción entre las reacciones químicas y la morfología del gel.
  • Para analizar la formación de patrones y las oscilaciones de forma en geles sometidos a reacciones químicas específicas.

Principales métodos:

  • Desarrolló un nuevo modelo computacional para simular deformaciones 2D en redes de polímeros hinchados.
  • Incorporó la dinámica de las reacciones químicas, específicamente la reacción Belousov-Zhabotinsky.
  • Analizó los cambios de volumen resultantes, las transformaciones de forma y la formación de patrones dinámicos.

Principales resultados:

  • El modelo captura con precisión las deformaciones 2D a gran escala y las reacciones químicas en los geles sensibles.
  • Se observaron ondas de desplazamiento de hinchazón local que conducen a diversos patrones dinámicos.
  • Demostró que las dimensiones del gel influyen críticamente en los patrones y oscilaciones observados.

Conclusiones:

  • El modelo desarrollado es una herramienta computacional eficaz para estudiar los procesos quimiomecánicos en geles sensibles.
  • Los hallazgos resaltan la importancia de los efectos 2D y las dimensiones del gel para dictar comportamientos dinámicos.
  • Proporciona información sobre las transformaciones morfológicas impulsadas por la actividad química.