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Related Concept Videos

Molecular Weight of Step-Growth Polymers01:08

Molecular Weight of Step-Growth Polymers

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Step growth polymerization involves bi or multifunctional monomers. Bifunctional monomers react to form linear step growth polymers, whereas multifunctional monomers react to form non-linear or branched polymers.
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...
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Related Experiment Video

Updated: Oct 27, 2025

Printing Thermoresponsive Reverse Molds for the Creation of Patterned Two-component Hydrogels for 3D Cell Culture
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Hydrogel foams from liquid foam templates: Properties and optimisation.

I Ben Djemaa1, S Auguste2, W Drenckhan-Andreatta3

  • 1Institut Charles Sadron, University of Strasbourg, CNRS UPR22, 23 rue du Loess, 67037 Strasbourg, France; Urgo Research Innovation and Development, 42 rue de Longvic, 21304 Chenôve Cedex, France.

Advances in Colloid and Interface Science
|July 19, 2021
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Summary

Hydrogel foams, macroporous materials with high gas content, offer unique properties like low density and high absorption. This review covers key concepts and advancements in hydrogel foam research for diverse applications.

Keywords:
Biomedical materialsHydrogel foamsHydrogelsLiquid-foam templating

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Physical Chemistry

Background:

  • Hydrogel foams are macroporous hydrogels with high gas volume fractions (>70% wet, ~100% dry).
  • They feature interconnected gas bubbles (10-1000 μm) within a continuous hydrogel network.
  • These structures yield properties like low density, high absorption, large surface area, and tunable mechanics.

Purpose of the Study:

  • To provide an overview of essential concepts in hydrogel foam formulation.
  • To present the current state-of-the-art in hydrogel foam research.
  • To address scientific and technical challenges at the hydrogel-foam interface.

Main Methods:

  • Review of existing literature on hydrogel and foam research.
  • Analysis of formulation strategies for creating hydrogel foams from liquid templates.
  • Synthesis of key scientific and technical notions.

Main Results:

  • Hydrogel foams possess a versatile property profile including biodegradability, bioactivity, and controlled release capabilities.
  • Applications span biomedical, cosmetic, and food industries.
  • Successful formulation requires mastering principles from both hydrogel and foam science.

Conclusions:

  • Hydrogel foams represent a rapidly evolving field at the intersection of chemistry and physics.
  • Understanding fundamental principles is crucial for advancing hydrogel foam technology.
  • Further research is needed to overcome formulation challenges and expand applications.