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Related Concept Videos

Adhesion01:14

Adhesion

43.3K
Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
Capillary action is a result of water’s adhesive tendencies. When a narrow...
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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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Updated: Jan 6, 2026

Investigating Single Molecule Adhesion by Atomic Force Spectroscopy
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Impacts of Polymer Adsorption on Adhesion Strength at Solid Interfaces.

Reiki Eto1, Tatsuki Abe2, Yuma Morimitsu1

  • 1Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan.

ACS Macro Letters
|November 19, 2025
PubMed
Summary

Intrinsic polymer adhesion strength (G0) was quantified using surface and interfacial cutting analysis system (SAICAS). Adhesion depends on segment-substrate interaction energy and chain conformation, not just molecular weight, guiding adhesive design.

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Area of Science:

  • Materials Science
  • Polymer Science
  • Surface Science

Background:

  • Polymer adhesion is crucial for many applications.
  • Understanding intrinsic adhesion strength (G0) is challenging due to complex failure modes.

Purpose of the Study:

  • To quantify intrinsic adhesion strength (G0) of polymers on solids.
  • To investigate the influence of molecular weight, stereoregularity, and annealing on polymer adhesion.

Main Methods:

  • Utilized a Surface and Interfacial Cutting Analysis System (SAICAS) for thickness-dependent measurements.
  • Analyzed polystyrene and poly(methyl methacrylate) films with varying molecular weights and stereoregularities.
  • Investigated the effect of thermal annealing time on adhesion properties.

Main Results:

  • Intrinsic adhesion strength (G0) increased with the growth of the adsorbed layer.
  • At extended annealing times, G0 was primarily determined by segment-substrate interaction energy and chain conformation, not molecular weight.
  • Stereoregularity significantly influenced chain conformation and adhesion.

Conclusions:

  • Interfacial adhesion is dictated by the total interaction energy from chain contact points with the solid.
  • Provides molecular-level insights into polymer adhesion mechanisms.
  • Offers principles for designing high-performance adhesives.