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Related Concept Videos

Olefin Metathesis Polymerization: Overview01:13

Olefin Metathesis Polymerization: Overview

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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...
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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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Polymer Classification: Stereospecificity01:26

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Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
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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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Free-Radical Chain Reaction and Polymerization of Alkenes02:35

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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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Characteristics and Nomenclature of Homopolymers01:00

Characteristics and Nomenclature of Homopolymers

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Polymers that are made up of identical monomer units are called homopolymers. Only one repeating unit is involved in the construction of the homopolymer structure. For example, as depicted in Figure 1, polypropylene is a homopolymer constituted of propylene monomers. Here, the only repeating unit in the polymer chain is propylene.
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Updated: Sep 16, 2025

Designed for Molecular Recycling: A Lignin-Derived Semi-aromatic Biobased Polymer
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Recommendations to Improve Text-Based Representation Systems for Polyolefins.

A Nolan Wilson1, Fernando L Vargas-Lara1, George Rodriguez1

  • 1ExxonMobil Technology and Engineering Company, Baytown, Texas 77520, United States.

Journal of Chemical Information and Modeling
|July 11, 2025
PubMed
Summary
This summary is machine-generated.

Current polymer informatics systems have gaps that hinder commercial product development. Addressing these limitations is crucial for advancing polymer science and industry applications, especially for polyolefins.

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Area of Science:

  • Polymer Science
  • Materials Informatics
  • Chemical Engineering

Background:

  • Text-based polymer structure representation systems have advanced.
  • Existing platforms have significant limitations.
  • These gaps impede the full potential of polymer informatics.

Purpose of the Study:

  • Identify critical gaps in current polymer informatics platforms.
  • Provide recommendations to address these shortcomings.
  • Focus on industrial applications, particularly in polyolefin commercialization.

Main Methods:

  • Analysis of existing text-based polymer structure representation systems.
  • Industrial perspective focused on polyolefins.
  • Identification of key areas for improvement.

Main Results:

  • Major gaps exist in current polymer informatics platforms.
  • Shortcomings prevent polymer informatics from reaching its full potential.
  • Commercial polymer product development is particularly affected.

Conclusions:

  • Closing identified gaps is essential for polymer informatics advancement.
  • Recommendations are provided from an industrial viewpoint.
  • Focus on polyolefins highlights the need for practical solutions.