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Related Concept Videos

Characteristics and Nomenclature of Copolymers01:24

Characteristics and Nomenclature of Copolymers

3.5K
Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...
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Anionic Chain-Growth Polymerization: Overview01:20

Anionic Chain-Growth Polymerization: Overview

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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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Ion Exchange01:17

Ion Exchange

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Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
1.5K
Cationic Chain-Growth Polymerization: Mechanism00:57

Cationic Chain-Growth Polymerization: Mechanism

3.0K
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...
3.0K
Anionic Chain-Growth Polymerization: Mechanism01:04

Anionic Chain-Growth Polymerization: Mechanism

2.6K
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...
2.6K
Polymer Classification: Architecture01:14

Polymer Classification: Architecture

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Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
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Updated: Mar 22, 2026

Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions
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Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions

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Sulfonated Polymerized Ionic Liquid Block Copolymers.

Kelly M Meek1, Yossef A Elabd1

  • 1Department of Chemical Engineering, Texas A & M University, College Station, TX, 77843, USA.

Macromolecular Rapid Communications
|April 30, 2016
PubMed
Summary
This summary is machine-generated.

Researchers synthesized a novel sulfonated polymerized ionic liquid (PIL) block copolymer. This new material exhibits ion conductivity, paving the way for advanced battery electrolytes.

Keywords:
block copolymersionic liquidsmembranespolymer electrolytessulfonation

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Area of Science:

  • Polymer Chemistry
  • Materials Science
  • Electrochemistry

Background:

  • Developing advanced electrolytes is crucial for next-generation energy storage devices.
  • Polymerized ionic liquids (PILs) offer potential due to their unique properties.
  • Block copolymers can self-assemble into ordered nanostructures, influencing ion transport.

Purpose of the Study:

  • To synthesize a novel diblock copolymer incorporating both sulfonated and PIL blocks.
  • To investigate the ion conductivity and morphology of the synthesized block copolymer.
  • To explore its potential as a solid-state electrolyte material.

Main Methods:

  • Reversible addition-fragmentation chain transfer (RAFT) polymerization for block copolymer synthesis.
  • Post-functionalization to attach imidazolium cations and sulfonic acid anions.
  • Ion exchange metathesis to introduce mobile lithium (Li+) cations and bis(trifluoromethylsulfonyl)imide (TFSI-) anions.
  • Small-angle X-ray scattering (SAXS) for morphological analysis.

Main Results:

  • Successful synthesis of poly(SS-Li-b-AEBIm-TFSI), a sulfonated PIL block copolymer.
  • Achieved ion conductivity greater than 1.5 mS cm(-1) at 70 °C in solid-state films with dissolved Li-TFSI salt.
  • SAXS data revealed a weakly ordered microphase-separated morphology.

Conclusions:

  • Demonstrated a new class of ion-conducting block copolymers containing both mobile cations and anions.
  • The synthesized material shows promise for solid-state electrolyte applications.
  • The block copolymer structure and ion mobility are key to its electrochemical performance.