ANR PRCI IPNanocoat
Interpenetrating polymer network for nanostructured coating
- Presentation
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French-Austrian PRCI ANR / FWF program
ANR project ANR-22-CE91-0006-01-
Partners:
- CY Cergy Paris Université / Laboratoire de Physicochimie des Polymères et des interfaces (LPPI)
- University of Vienna / Department of Physical Chemistry
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Dates : April 1rst, 2023 – March 31th, 2027 (4 years)
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Funding :
- ANR : 252 555 euros
- FWF: 213 612 euros
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Abstract:
Thin films of polymers are increasingly developed for various biomedical or industrial applications. Polymer blends are often used to provide improved and versatile properties to the coating. However, 2D confinement may affect their miscibility behavior. To avoid phase separation over time in 3D blends and ensure stability to external stimuli, cross-linking of both polymers using two different pathways has been used leading to interpenetrating polymer networks (IPN). We propose to use the same concept in ultrathin films at the air-water interface, i.e. Langmuir films, leading to 2D-IPN nanocoating once transferred onto solid substrate. The aim of the project is to fundamentally understand how physico-chemical parameters and cross-linking reactions affect phase separation in polymer blends confined in 2D geometry in order to control the morphology and synthesize 2D-IPN nanocoating on demand.
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- Participants
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Laboratoire de Physicochimie des Polymères et des interfaces (LPPI), CY Cergy Paris Université (CYU), France
Permanent researchers :
- Sophie CANTIN, University Professor, coordinator
- Alae EL HAITAMI, Assistant Professor
- Elian Masnada, Teacher-Researcher
Non-permanent researchers:
- Abdoul-Aziz KA, Engineer (sept 2023-nov 2024)
- Aurély ARAMINTHE, PhD student (sept 2023-)
- Henri COMUGNARO-PLANTARD DE SAINT CLAIR, Internship student (feb 2025 – june 2025)
Other non-permanents researchers (not funded by the ANR):
- Modibo CAMARA, PhD student (oct 2022-)
Collaborators :
- Odile FICHET, University Professor, LPPI, CYU
- Fabrice COUSIN, Research Director, Laboratoire Léon Brillouin, CEA Saclay
Department of Physical Chemistry, University of Vienna, Austria
Permanent researcher :
- Ellen BACKUS, University Professor, coordinator
Non-permanent researcher:
- Bence KOVAGÓ, PhD student (sept 2023-)
Thesis title : Exploring Cross-Linking Pathways and Reaction Parameters for Nanocoating Applications: Synthesis and Characterization of One-Phase 2D-IPN at the Air-Water Interface - Objectives - Methods
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Objectives:
Combining experimental observations and modelling on a large range of polymer blends as ultrathin films, we expect to determine the influence of 1) the 2D confinement on phase separation and 2) the cross-linking reactions on the morphology. The aim is to control the degree of spatial organization of the polymers in thin films in order to ultimately, by a targeted choice of polymers, synthesize stable 2D interpenetrating polymer networks (IPN) nanocoatings with adjustable properties.
Methods:
During the first step (WP 1) currently being carried out, various polymer pairs with different hydrophobicity are spread on the water surface as monomolecular-thick films. Surface pressure-composition phase diagrams (at fixed temperature) showing the regions corresponding to miscibility or phase separation are built for each couple of polymers. For this, thermodynamic measurements of compression isotherms are performed while lateral and vertical morphology is characterized on the water surface by Brewster angle microscopy and neutron reflectivity. Molecular level organization is determined in different points of the phase diagram by a surface sensitive spectroscopy, sum frequency generation (SFG). In parallel, modelling is used to identify the key physico-chemical parameters involved in the miscibility properties of the polymers on water.
In a second step (WP 2), we will focus on the miscibility regions of the phase diagrams to synthesize one-phase 2D-IPN and study the evolution of the morphology depending on reaction parameters. The two polymers will be cross-linked by two different pathways, acetalization in acidic medium and free-radical cross-linking under UV irradiation. Thanks to the possibility of following in real time the reactions by SFG, the study of the morphology and modelling, the evolution of the pressure-composition phase diagrams will be characterized during cross-linking. As such, the mechanisms of phase separation in 2D cross-linked polymers will be assessed.
In a final step (WP 3), the 2D-IPN will be evaluated as nanocoatings in terms of morphology, molecular scale organization and wetting properties, and compared to IPN obtained by usual techniques such as spin-coating.
- Publications - Communications
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Oral communications in conferences
- HAL https://hal.science/hal-04907774: Bence Kővágó, Aurély Araminthe, Alae El Haitami, Sophie Cantin, Ellen Backus. Miscibility of polymers as Langmuir films at the air-water interface. 4th International DoSChem Student Symposium, 12-13 septembre 2024, Sep 2024, Vienne (Autriche), Austria
- HAL https://hal.science/hal-04907843: Aurély Araminthe, Bence Kővágó, Alae El Haitami, Ellen Backus, Sophie Cantin. Polymer blend of PEO-PPO-PEO and PDMS in Langmuir film: thermodynamic, morphological and molecular scale properties. European Conference on Organised Films 18 (ECOF 18), 22-25 juillet 2024., Jul 2024, Évora, Portugal
- HAL https://hal.science/hal-04907859: Modibo Camara, Elian Masnada, Sophie Cantin, Odile Fichet. Thermodynamics modelization of pure polymer Langmuir films. European Conference on Organised Films 18 (ECOF 18), 22-25 juillet 2024., Jul 2024, Évora, Portugal
Posters in conferences
- HAL https://hal.science/hal-04907873: Bence Kővágó, Aurély Araminthe, Zhengyang Peng, Alae El Haitami, Sophie Cantin, Ellen Backus. Miscibility of polymer blends at the air-water interface. ChemieTage 2024, 23-25 septembre 2024, Sep 2024, Graz Austria
- HAL https://hal.science/hal-04907887: Bence Kővágó, Aurély Araminthe, Zhengyuan Peng, Alae El Haitami, Sophie Cantin, Ellen Backus. Miscibility of polymers as Langmuir films at the air-water interface. 4th International DoSChem Student Symposium, 12-13 septembre 2024., Sep 2024, Vienne Austria
- HAL https://hal.science/hal-04907957: Abdoul Aziz Ka, Alae El Haitami, Ellen Backus, Sophie Cantin. 2D polymer networks at the air-water interface based on polytetrahydrofuran (PTHF) and diacrylate terminated-poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) copolymer. European Conference on Organised Films 18 (ECOF 18), 22-25 juillet 2024., Jul 2024, Évora, Portugal
- HAL https://hal.science/hal-04907903: Bence Kovago, Aurély Araminthe, Zhengyuan Peng, Alae El Haitami, Sophie Cantin, Ellen Backus. Investigating the phase behavior of polymer blends at the air-water interface at the molecular level. European Conference on Non-Linear Optical Spectroscopy 2024, 21-24 avril 2024., Apr 2024, Vienne, Austria
- HAL https://hal.science/hal-04907910: Bence Kovago, Aurély Araminthe, Zhengyuan Peng, Alae El Haitami, Sophie Cantin, Ellen Backus. Investigating the phase behavior of polymer blends at the air-water interface at the molecular level. Bunsen-Tagung 2024, High-Resolution Structural Methods in Material and Life Sciences, 25-27 mars 2024., Mar 2024, Aache Germany
- HAL https://hal.science/hal-04907923: Bence Kovago, Aurély Araminthe, Zhengyuan Peng, Alae El Haitami, Sophie Cantin, Ellen Backus. Investigating the phase behavior of polymer blends at the air-water interface at the molecular level. 2nd Vienna Soft Matter Day, Vienna, 1er décembre 2023, Dec 2023, Vienne, Austria
