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Related Concept Videos

Adhesion01:14

Adhesion

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 glass...
Surface Tension, Capillary Action, and Viscosity02:57

Surface Tension, Capillary Action, and Viscosity

Surface Tension
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
Protein-protein Interfaces02:04

Protein-protein Interfaces

Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a polypeptide...
Cell Adhesion Molecules - Types and Functions01:20

Cell Adhesion Molecules - Types and Functions

Cell adhesion molecules (CAMs) are pivotal to multicellularity and the coordinated functioning of tissues and organ systems. They enable physical interactions between cells and provide mechanical strength to tissues. They also function as receptors for signal transmission across the plasma membrane. The CAMs are broadly classified into four families - integrins, cadherins, selectins, and immunoglobulin-like CAMs (IgCAMs).
CAM Families
The Integrin family of proteins is primarily  involved in a...
Cell Adhesion in Plants01:14

Cell Adhesion in Plants

Plants have rigid cell walls that are made up of cell wall polysaccharides that mediate cell-cell adhesion. The primary cell walls of plants consist of two independent and interacting polysaccharide networks: a pectin matrix that embeds the second network comprising cellulose and hemicelluloses.
Pectins are complex heteropolymers mainly composed of negatively-charged α-D-glucopyranosyl uronic acid and some neutral glycosyl residues such as α-L-rhamnopyranose, α-L-arabinofuranose, and...
Anionic Chain-Growth Polymerization: Overview01:20

Anionic Chain-Growth Polymerization: Overview

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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Related Experiment Video

Updated: Jul 8, 2026

Investigating Single Molecule Adhesion by Atomic Force Spectroscopy
09:48

Investigating Single Molecule Adhesion by Atomic Force Spectroscopy

Published on: February 27, 2015

Adhesion mechanisms at soft polymer interfaces.

Liliane Léger1, Costantino Creton

  • 1Laboratoire de Physique des Solides, UMR 8502 CNRS-Université Paris Sud, Bâtiment 510, 91405 Orsay Cedex, France. leger@lps.u-psud.fr

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|December 25, 2007
PubMed
Summary
This summary is machine-generated.

Connector molecules and bulk dissipation mechanisms are key to understanding soft polymer adhesion. Controlling interface friction allows fine-tuning of adhesive properties for enhanced performance.

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Published on: February 27, 2015

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13:57

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Area of Science:

  • Polymer Science and Engineering
  • Materials Science
  • Adhesion Science

Background:

  • Soft polymer interfaces exhibit complex adhesion behaviors.
  • Understanding these mechanisms is crucial for developing advanced adhesives and materials.

Purpose of the Study:

  • To analyze adhesion mechanisms at soft polymer interfaces.
  • To investigate the role of connector molecules and bulk dissipation mechanisms.
  • To explore methods for controlling adhesion properties.

Main Methods:

  • Analysis of significant examples of soft polymer interfaces.
  • Examination of stress transmission via connector molecule stretching and extraction.
  • Discussion of bulk dissipation mechanisms in polymer melts and pressure-sensitive adhesives.

Main Results:

  • Connector molecules transmit stress through stretching and extraction.
  • Bulk dissipation mechanisms are essential for achieving high fracture toughness.
  • Adhesion is determined by a balance between interface properties and bulk deformations.
  • Interface friction properties can be manipulated to tune adhesion.

Conclusions:

  • Adhesion in soft polymers is a result of interplay between interface and bulk properties.
  • Connector molecules and bulk dissipation are critical for robust adhesion.
  • Controlling interface friction offers a pathway to engineer adhesive performance.