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Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)00:53

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Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
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Olefin Metathesis Polymerization: Overview01:13

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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 of a...
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Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)01:16

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Ring-opening metathesis polymerization or ROMP involves strained cycloalkenes as starting materials. The mechanism of ROMP proceeds by reacting cycloalkene with Grubbs catalyst to give metallacyclobutane intermediate which undergoes a ring-opening reaction to form new carbene. The new carbene reacts with another molecule of cycloalkene. Repetition of these steps leads to the formation of an unsaturated open-chain polymer product. All these steps are reversible, however, relieving the ring...
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Types of Step-Growth Polymers: Polyesters01:20

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The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
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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...
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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.
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Related Experiment Video

Updated: Jan 15, 2026

Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application
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Multicatalytic Access to Renewable Poly(Silyl Ether)s with Tunable Properties.

Fan Yang1, Fan Sun1, Christophe M Thomas1

  • 1Institut de Recherche de Chimie Paris, CNRS, Chimie ParisTech, PSL University, Paris, 75005, France.

Angewandte Chemie (International Ed. in English)
|January 14, 2026
PubMed
Summary

This study introduces a sustainable one-pot method for creating bio-based poly(silyl ether)s. These novel polymers offer tunable properties, exceptional mechanical performance, and efficient chemical recycling for advanced applications.

Keywords:
Bio‐based polymersDegradableMulticatalytic systemOne‐pot polymerizationPoly(silyl ether)s

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Area of Science:

  • Polymer Chemistry
  • Materials Science
  • Sustainable Chemistry

Background:

  • Global reliance on petroleum-based polymers poses significant sustainability challenges.
  • Development of eco-friendly alternatives is crucial for reducing environmental impact.
  • Need for high-performance polymers derived from renewable resources.

Purpose of the Study:

  • To develop a novel, efficient, and scalable one-pot synthesis for partially bio-based poly(silyl ether)s.
  • To achieve tunable polymer properties through controlled synthesis.
  • To explore the mechanical performance and recyclability of the synthesized polymers.

Main Methods:

  • A one-pot multicatalytic strategy combining magnesium-catalyzed esterification and borane-catalyzed hydrosilylation.
  • Utilizing bio-based diacids and alcohols as monomers.
  • Characterization of polymer architecture, thermal properties, mechanical performance, and degradation behavior.

Main Results:

  • Successfully synthesized high-molecular-weight, partially bio-based poly(silyl ether)s with tunable properties.
  • Achieved extraordinary extensibility (elongation at break > 3800%) and high energy absorption.
  • Demonstrated excellent catalyst compatibility, scalability, and efficient chemical recycling.

Conclusions:

  • The one-pot process offers a sustainable and efficient route to high-performance, customizable polymers.
  • The synthesized poly(silyl ether)s show potential for advanced applications requiring unique mechanical properties.
  • This approach significantly reduces purification steps and broadens monomer scope, enhancing process viability.