Article (Scientific journals)
Introducing polyhydroxyurethane hydrogels and coatings for formaldehyde capture
Bourguignon, Maxime; Grignard, Bruno; Detrembleur, Christophe
2021In ACS Applied Materials and Interfaces, 13 (45), p. 54396-54408
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Keywords :
coating; polyurethane; hydrogel
Abstract :
[en] Formaldehyde (FA) is a harmful chemical product largely used for producing resins found in our living spaces. Residual FA that leaches out the resin contributes to our indoor air pollution and causes some important health issues. Systems able to capture this volatile organic compound are highly desirable; however, traditional adsorbents are most often restricted to air filtration systems. Herein, we report novel waterborne coatings that are acting as a FA sponge for indoor air decontamination. These coatings, of the poly(hydroxyurethane) (PHU) type, rich in primary amine groups, are prepared by the polyaddition of a hydrosoluble dicyclic carbonate to a polyamine in water at room temperature under catalyst-free conditions. We highlight the importance of the choice of the polyamine on the curing rate of the formulation and on the FA capture ability of PHU. The excellent FA capturing ability of the best candidate is rationalized by investigating the action mode of the polyamine used to construct PHUs. With poly(vinyl amine), FA is covalently and permanently bound to PHU, with no release over time. The performance of the coating in FA abatement is impressive, with more than 90% of captured FA after one day of contact. The facility to prepare these transparent and colorless coatings from waterborne formulations gives access to new efficient indoor air depolluting solutions, potentially applicable to various surfaces of our living spaces (wall, ceiling, etc.).
Research center :
Center for Education and Research on Macromolecules (CERM), Belgium
Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit, Belgium
Disciplines :
Chemistry
Materials science & engineering
Author, co-author :
Bourguignon, Maxime ;  University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit, Center for Education and Research on Macromolecules (CERM), Belgium
Grignard, Bruno ;  University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit, Center for Education and Research on Macromolecules (CERM), Belgium
Detrembleur, Christophe ;  University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit, Center for Education and Research on Macromolecules (CERM), Belgium
Language :
English
Title :
Introducing polyhydroxyurethane hydrogels and coatings for formaldehyde capture
Publication date :
2021
Journal title :
ACS Applied Materials and Interfaces
ISSN :
1944-8244
eISSN :
1944-8252
Publisher :
American Chemical Society, United States - District of Columbia
Volume :
13
Issue :
45
Pages :
54396-54408
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
BIODEC project
Funders :
FEDER - Fonds Européen de Développement Régional [BE]
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
FWO - Fonds Wetenschappelijk Onderzoek Vlaanderen [BE]
The Excellence of Science ( EOS) program
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since 19 November 2021

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