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Cohesion

Cohesion

Cohesion is the attraction between molecules of the same type, such as water molecules. Water molecules have an overall neutral charge but are polar molecule. An oxygen atom in one water molecule has a partial negative charge that can bind to a hydrogen atom with a partial positive charge in a second water molecule, forming a hydrogen bond. Each water molecule can form up to four hydrogen bonds with other water molecules. Hydrogen bonds are responsible for water's cohesive nature.
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Related Experiment Video

Updated: May 6, 2026

Microwave-assisted Functionalization of Polyethylene glycol and On-resin Peptides for Use in Chain Polymerizations and Hydrogel Formation

Microwave-assisted Functionalization of Polyethylene glycol and On-resin Peptides for Use in Chain Polymerizations and Hydrogel Formation

Published on: October 29, 2013

Editorial for the Special Issue "Polymeric Hydrogels for Biomedical Application".

Ion Călina¹, Muhammad Asim Raza²

¹National Institute for Laser, Plasma and Radiation Physics, 409 Atomiștilor, 077125 Măgurele, Romania.

Gels (Basel, Switzerland)

|April 25, 2025

Summary

Hydrogels, or 3D networks of hydrophilic polymers, excel at absorbing water. Their unique properties offer significant potential in diverse scientific and technological applications.

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Last Updated: May 6, 2026

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Area of Science:

Polymer Science
Materials Science

Background:

Hydrogels are three-dimensional networks of hydrophilic polymers.
They possess a remarkable capacity for water absorption and retention.

Discussion:

The unique properties of hydrogels make them promising for various applications.
Further research into hydrogel networks can unlock new technological advancements.

Key Insights:

Hydrogels demonstrate significant potential due to their water-absorbing capabilities.
The structural characteristics of hydrogels are key to their functionality.

Outlook:

Exploring novel hydrogel formulations can lead to breakthroughs in biomaterials and drug delivery.
Advancements in hydrogel technology are expected to impact multiple scientific fields.