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

Ziegler–Natta Chain-Growth Polymerization: Overview01:17

Ziegler–Natta Chain-Growth Polymerization: Overview

3.4K
Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta...
3.4K
Step-Growth Polymerization: Overview01:03

Step-Growth Polymerization: Overview

3.6K
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...
3.6K
Free-Radical Chain Reaction and Polymerization of Alkenes02:35

Free-Radical Chain Reaction and Polymerization of Alkenes

8.2K
The conversion of alkenes to macromolecules called polymers is a reaction of high commercial importance. The structure of the polymer is defined by a repeating unit, while the terminal groups are considered insignificant. The average degree of polymerization represents the number of repeating units in the polymer molecule and is denoted by the subscript n.
8.2K
Olefin Metathesis Polymerization: Overview01:13

Olefin Metathesis Polymerization: Overview

2.2K
Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists...
2.2K
Polymers02:34

Polymers

36.9K
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
36.9K
Radical Chain-Growth Polymerization: Mechanism01:09

Radical Chain-Growth Polymerization: Mechanism

2.8K
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...
2.8K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

<i>De Novo</i> Design, Directed Evolution and Computational Study of Heme-Binding Helical Bundle Protein Catalysts for Biocatalytic Enantioselective Ge-H Insertion.

bioRxiv : the preprint server for biology·2025
Same author

<i>De Novo</i> Design, Directed Evolution and Computational Study of Heme-Binding Helical Bundle Protein Catalysts for Biocatalytic Enantioselective Ge-H Insertion.

Journal of the American Chemical Society·2025
Same author

Cascade Mechanochemical Transformation of a Benzobarrelane Polymer.

Journal of the American Chemical Society·2025
Same author

Unidirectional Chain Transfer of Enol Ethers Yields Heterotelechelic Degradable Poly(Enol Ether).

ACS macro letters·2025
Same author

Multi-Generational Frontal Curing and Chemical Recycling of Polydicyclopentadiene Thermosets.

Advanced materials (Deerfield Beach, Fla.)·2025
Same author

Revealing Mechanochemical Force Distributions with Polymechanophore Block Copolymers.

ACS macro letters·2025

Video Experimental Relacionado

Updated: Sep 11, 2025

Reliable Mechanochemistry: Protocols for Reproducible Outcomes of Neat and Liquid Assisted Ball-mill Grinding Experiments
13:05

Reliable Mechanochemistry: Protocols for Reproducible Outcomes of Neat and Liquid Assisted Ball-mill Grinding Experiments

Published on: January 23, 2018

10.8K

Mecanoquímica de Polímeros: ¿Hacia dónde se dirige?

Maggie Horst1, Vittal Bhat1, Yan Xia1

  • 1Department of Chemistry, Stanford University, Stanford, California 94305, United States.

Journal of the American Chemical Society
|August 12, 2025
PubMed
Resumen

La fuerza mecánica desencadena reacciones químicas en los polímeros utilizando mecanióforos incrustados. Este campo permite nuevas transformaciones y materiales avanzados como polímeros sensibles al estrés.

Más Videos Relacionados

Author Spotlight: Exploring Self-Assembled MOF-Polymer Composites
06:48

Author Spotlight: Exploring Self-Assembled MOF-Polymer Composites

Published on: June 14, 2024

1.9K
Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers
08:12

Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers

Published on: December 16, 2022

3.4K

Videos de Experimentos Relacionados

Last Updated: Sep 11, 2025

Reliable Mechanochemistry: Protocols for Reproducible Outcomes of Neat and Liquid Assisted Ball-mill Grinding Experiments
13:05

Reliable Mechanochemistry: Protocols for Reproducible Outcomes of Neat and Liquid Assisted Ball-mill Grinding Experiments

Published on: January 23, 2018

10.8K
Author Spotlight: Exploring Self-Assembled MOF-Polymer Composites
06:48

Author Spotlight: Exploring Self-Assembled MOF-Polymer Composites

Published on: June 14, 2024

1.9K
Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers
08:12

Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers

Published on: December 16, 2022

3.4K

Área de la Ciencia:

  • Mecanoquímica de los polímeros
  • Ciencias de los materiales
  • Química orgánica

Sus antecedentes:

  • La fuerza mecánica influye en la reactividad química.
  • Los mecanóforos son moléculas que responden a la fuerza.
  • La incrustación de mecanóforos en polímeros permite una aplicación de fuerza precisa.

Objetivo del estudio:

  • Destacar los avances en la mecanoquímica de los polímeros.
  • Discutir las limitaciones en el campo.
  • Proporcionar una visión de las direcciones futuras.

Principales métodos:

  • Revisión de la literatura sobre la mecanoquímica de los polímeros.
  • Análisis de los principios de diseño molecular.
  • Discusión de las aplicaciones del material.

Principales resultados:

  • Avances significativos en la comprensión y el control de la reactividad mecánica.
  • Desarrollo de nuevas transformaciones (macro) moleculares.
  • Creación de materiales sensibles a las tensiones y endurecedores.

Conclusiones:

  • La mecanoquímica de polímeros ofrece vías de reacción únicas.
  • La investigación adicional puede desbloquear nuevas propiedades del material.
  • El campo es dinámico y tiene un potencial prometedor para el futuro.