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Related Concept Videos

Ion Exchange01:17

Ion Exchange

622
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...
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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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Polyurethanes Modified by Ionic Liquids and Their Applications.

Xue Wang1, Zhenjie Zhao1, Meiyu Zhang1

  • 1State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China.

International Journal of Molecular Sciences
|July 29, 2023
PubMed
Summary
This summary is machine-generated.

Ionic liquids enhance polyurethane (PU) properties, creating ionic PU for advanced flexible electronic devices. This review covers fabrication and applications of these modified PUs in sensors, actuators, and films.

Keywords:
applicationblendingcopolymerizationionic liquidspolyurethane

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Area of Science:

  • Polymer Science
  • Materials Science
  • Nanotechnology

Background:

  • Polyurethane (PU) is a versatile polymer widely used across various industries due to its flexible formulation and excellent performance.
  • Introducing ionic groups into PU imparts desirable properties like electrical conductivity, flame retardancy, and antistatic capabilities.
  • These modifications expand PU's utility, particularly in flexible electronic devices such as sensors and actuators.

Purpose of the Study:

  • To review the chemical and microphase structures of PU and their impact on physical and chemical performance.
  • To explore the application of ionic liquids (ILs) in PU synthesis and processing, leading to ionic PU.
  • To summarize fabrication methods and application progress of IL-modified PUs.

Main Methods:

  • Physical blending of ionic liquids with polyurethane.
  • Chemical copolymerization methods for integrating ionic liquids into PU.
  • Review of existing literature on IL-modified PU fabrication and applications.

Main Results:

  • Ionic liquids significantly enhance PU properties, creating a new class of materials termed ionic PU.
  • IL-modified PUs demonstrate improved performance for applications in sensors, actuators, transistors, and antistatic films.
  • Fabrication methods include both physical blending and chemical copolymerization, offering versatile routes to ionic PU.

Conclusions:

  • Ionic PU represents a promising material for advanced flexible devices.
  • Further research into IL-modified PUs could unlock new applications and overcome current challenges.
  • The review highlights the potential of ionic liquids to tailor polyurethane properties for specific technological demands.