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Related Concept Videos

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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  11. Heterogeneous Acrylic Resins With Bicontinuous Nanodomains As Low-modulus Flexible Adhesives

Heterogeneous Acrylic Resins with Bicontinuous Nanodomains as Low-Modulus Flexible Adhesives

Jong-Ho Back1,2, Ji-Soo Kim1, Youngdo Kim3

  • 1Program in Environmental Materials Science, Department of Agriculture, Forestry and Bioresources, Seoul National University, Seoul, 08826, Republic of Korea.

Small (Weinheim an Der Bergstrasse, Germany)
|June 26, 2024

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Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites
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Control of Cell Adhesion using Hydrogel Patterning Techniques for Applications in Traction Force Microscopy
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View abstract on PubMed

Summary
This summary is machine-generated.

Novel structured adhesives with bicontinuous nanodomains offer exceptional flexibility and low modulus for foldable electronics. These advanced materials provide superior performance over traditional adhesives, enabling new display technologies.

Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Adhesives are crucial for assembling diverse electronic devices, especially flexible displays.
  • Existing adhesives often lack the required transparency, rapid recovery, and specific stiffness for advanced flexible electronics.

Purpose of the Study:

  • To develop novel structured adhesives with bicontinuous nanodomains for flexible electronic applications.
  • To achieve high transparency, flexibility, and low modulus in adhesives for foldable displays.

Main Methods:

  • Utilized polymerization-induced microphase separation with a macro chain transfer agent (CTA).
  • Characterized phase separation using small-angle X-ray scattering, transmission electron microscopy, and dynamic mechanical analysis.
  • Optimized macro CTA length to control nanodomain structure and adhesive properties.
Keywords:
adhesiveflexibilitypolymerization‐induced microphase separation

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Main Results:

  • Developed adhesives with hard and soft nanodomains exhibiting 93% strain recovery and a low modulus (7 kPa).
  • Achieved excellent resilience, strong adhesion, and high transparency.
  • Demonstrated exceptional stability under various temperature and humidity conditions via dynamic folding tests.

Conclusions:

  • The unique bicontinuous phase structure provides excellent transparency, flexibility, and reduced stiffness.
  • The optimized adhesive is well-suited for commercial foldable displays.
  • Potential applications include stretchable displays and wearable electronics.