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Molecular Weight of Step-Growth Polymers

Molecular Weight of Step-Growth Polymers

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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Updated: Dec 5, 2025

Microfluidic Fabrication of Polymeric and Biohybrid Fibers with Predesigned Size and Shape

Microfluidic Fabrication of Polymeric and Biohybrid Fibers with Predesigned Size and Shape

Published on: January 8, 2014

Polyimide-Based Foams: Fabrication and Multifunctional Applications.

Weihua Gu¹, Gehuan Wang¹, Ming Zhou¹

¹College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China.

ACS Applied Materials & Interfaces

|October 16, 2020

Summary

This summary is machine-generated.

Polyimide foams, with their unique structure, show promise for advanced equipment. This review details their fabrication, properties, and applications across various fields.

Keywords:

fabrication methods multifunctional applications multifunctional properties polyimide foams synthesis mechanism

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Area of Science:

Materials Science
Polymer Chemistry
Engineering Applications

Background:

Polyimide foams possess unique 3D cellular structures and intrinsic properties.
These characteristics make them highly suitable for advanced functional equipment.
Extensive research interest is driven by their potential applications.

Purpose of the Study:

To systematically describe typical fabrication methods for polyimide foams.
To elucidate the synthesis mechanisms involved in their preparation.
To compare the advantages and disadvantages of different preparation techniques.

Main Methods:

Review of established polyimide foam fabrication techniques.
Analysis of synthesis mechanisms.
Comparative assessment of preparation method efficacy.

Main Results:

Detailed description of several typical polyimide foam fabrication methods.
Comparison of the pros and cons of these preparation routes.
Identification of key functions and mechanism models in thermal, mechanical, sensing, electromagnetic, environmental, and electrical fields.

Conclusions:

Polyimide foams offer diverse functionalities across multiple scientific and engineering domains.
Current challenges in polyimide foam development are identified.
The future development of polyimide foam materials is highly promising.