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Updated: Oct 14, 2025

Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification

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Published on: April 7, 2017

Introducing Polyhydroxyurethane Hydrogels and Coatings for Formaldehyde Capture.

Maxime Bourguignon¹, Bruno Grignard¹, Christophe Detrembleur¹

¹Center for Education and Research on Macromolecules (CERM), CESAM Research Unit, University of Liege, Chemistry Department, Sart-Tilman B6A, 4000 Liege, Belgium.

ACS Applied Materials & Interfaces

|November 8, 2021

Summary

This summary is machine-generated.

Novel waterborne coatings effectively capture formaldehyde (FA), a common indoor air pollutant. These poly(hydroxyurethane) coatings permanently bind FA, offering a promising solution for improving indoor air quality in homes and buildings.

Keywords:

cyclic carbonate indoor air purification nonisocyanate polyurethane polyvinylamine solvent-free formulation

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Area of Science:

Materials Science
Environmental Chemistry
Polymer Chemistry

Background:

Formaldehyde (FA) is a volatile organic compound contributing to indoor air pollution and health issues.
Traditional adsorbents for FA are often limited to air filtration systems.
Novel solutions for indoor air decontamination are highly desirable.

Purpose of the Study:

To develop novel waterborne coatings for effective indoor formaldehyde (FA) capture.
To investigate the influence of polyamine choice on coating properties and FA adsorption.
To understand the mechanism of FA binding within the developed coatings.

Main Methods:

Synthesis of poly(hydroxyurethane) (PHU) coatings via polyaddition of dicyclic carbonate to polyamine in water.
Evaluation of FA capture efficiency using different polyamines.
Analysis of FA binding mechanism and long-term stability.

Main Results:

PHU coatings rich in primary amine groups demonstrated significant FA capturing ability.
The choice of polyamine critically affected curing rate and FA adsorption capacity.
The best performing coating, utilizing poly(vinyl amine), achieved over 90% FA capture within one day.
FA was covalently and permanently bound to the PHU matrix with no observed release.

Conclusions:

Waterborne PHU coatings offer an efficient and accessible method for indoor air decontamination from formaldehyde.
These coatings can be applied to various surfaces, providing a versatile solution for improving indoor air quality.
The developed technology presents a promising advancement in addressing formaldehyde pollution in residential and commercial spaces.