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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 of a...
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Anionic Chain-Growth Polymerization: Overview01:20

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The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
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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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Oxidation of Alkenes: Anti Dihydroxylation with Peroxy Acids02:04

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Diols are compounds with two hydroxyl groups. In addition to syn dihydroxylation, diols can also be synthesized through the process of anti dihydroxylation. The process involves treating an alkene with a peroxycarboxylic acid to form an epoxide. Epoxides are highly strained three-membered rings with oxygen and two carbons occupying the corners of an equilateral triangle. This step is followed by ring-opening of the epoxide in the presence of an aqueous acid to give a trans diol.
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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.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
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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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Catechol-Functionalized Polyolefins.

Yinna Na1, Changle Chen1

  • 1CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China.

Angewandte Chemie (International Ed. in English)
|February 19, 2020
PubMed
Summary
This summary is machine-generated.

Sustainable polyolefins were created using bioresourced comonomers like eugenol. These catechol-functionalized polymers exhibit enhanced mechanical, self-healing, and adhesion properties, offering a versatile platform for advanced material development.

Keywords:
ironmechanical propertiesolefinspalladiumpolymerizations

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Area of Science:

  • Polymer Chemistry
  • Materials Science
  • Sustainable Polymers

Background:

  • Polymer properties are modulated by comonomer incorporation during ethylene polymerization.
  • Bioresourced comonomers offer a sustainable route to high-performance polyolefins.
  • Catechol functionality can impart unique material characteristics.

Purpose of the Study:

  • To incorporate bioresourced comonomers, specifically eugenol, into polyolefins.
  • To investigate the properties of resulting catechol-functionalized polyolefins.
  • To demonstrate the versatility of these polymers as a platform for advanced materials.

Main Methods:

  • Palladium-catalyzed copolymerization and terpolymerization reactions.
  • Incorporation of bioresourced eugenol and related comonomers.
  • Functionalization with catechol groups and metal ion interactions.

Main Results:

  • Generation of high-molecular-weight catechol-functionalized polyolefins.
  • Enhanced mechanical and self-healing properties via metal ion interactions.
  • Improved surface, adhesion, and compatibilizing properties due to catechol groups.

Conclusions:

  • Bioresourced comonomers can create advanced polyolefins with tunable properties.
  • Catechol functionality provides a versatile platform for diverse material applications.
  • This approach enhances sustainability in high-performance polymer development.