Engineered Nanocomposite Coatings: From Water-Soluble Polymer to Advanced Hydrophobic Performances
In this work, a water-soluble (hydrophilic) polymer was used to form a hydrophobic coating on silicon substrates (Si) in a two-step process comprising (i) the transformation of the polymer into an insoluble material and (ii) the structuring of this coating at nanometric and micrometric scales to ach...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-01-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/17/3/574 |
| _version_ | 1797318555034714112 |
|---|---|
| author | Syrine Jebali Marylène Vayer Khaled Belal Christophe Sinturel |
| author_facet | Syrine Jebali Marylène Vayer Khaled Belal Christophe Sinturel |
| author_sort | Syrine Jebali |
| collection | DOAJ |
| description | In this work, a water-soluble (hydrophilic) polymer was used to form a hydrophobic coating on silicon substrates (Si) in a two-step process comprising (i) the transformation of the polymer into an insoluble material and (ii) the structuring of this coating at nanometric and micrometric scales to achieve the desired hydrophobic behavior. Polyvinylpyrrolidone (PVP), a water-soluble commodity polymer, was crosslinked using benzophenone and UV irradiation to produce a water-insoluble PVP coating. The nanometric scale roughness of the coating was achieved by the addition of silica nanoparticles (NPs) in the coating. The micrometric scale roughness was achieved by forming vertical pillars of PVP/NP coating. To prepare these pillars, a perforated polystyrene (PS) template was filled with a PVP/NP suspension. Micrometer scale vertical pillars of PVP/silica NPs were produced by this method, which allowed us to tune the wettability of the surface, by combining the micrometric scale roughness of the pillars to the nanometric scale roughness provided by the nanoparticles at the surface. By adjusting the various experimental parameters, a hydrophobic PVP coating was prepared with a water contact angle of 110°, resulting in an improvement of more than 80% compared to the bare flat film with an equal amount of nanoparticles. This study paves the way for the development of a more simplified experimental approach, relying on a blend of polymers containing PVP and NPs, to form the micro/nano-structured PVP pillars directly after the deposition step and the selective etching of the sacrificial major phase. |
| first_indexed | 2024-03-08T03:54:03Z |
| format | Article |
| id | doaj.art-c5dc43a9767d4b1ba7a4f4b9528d817f |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-08T03:54:03Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-c5dc43a9767d4b1ba7a4f4b9528d817f2024-02-09T15:17:14ZengMDPI AGMaterials1996-19442024-01-0117357410.3390/ma17030574Engineered Nanocomposite Coatings: From Water-Soluble Polymer to Advanced Hydrophobic PerformancesSyrine Jebali0Marylène Vayer1Khaled Belal2Christophe Sinturel3Interfaces, Confinement, Matériaux et Nanostructures (ICMN), CNRS-Université d’Orléans, UMR 7374, 45071 Orleans, FranceInterfaces, Confinement, Matériaux et Nanostructures (ICMN), CNRS-Université d’Orléans, UMR 7374, 45071 Orleans, FranceKemica Coatings, Za du Bois Gueslin, 28630 Mignieres, FranceInterfaces, Confinement, Matériaux et Nanostructures (ICMN), CNRS-Université d’Orléans, UMR 7374, 45071 Orleans, FranceIn this work, a water-soluble (hydrophilic) polymer was used to form a hydrophobic coating on silicon substrates (Si) in a two-step process comprising (i) the transformation of the polymer into an insoluble material and (ii) the structuring of this coating at nanometric and micrometric scales to achieve the desired hydrophobic behavior. Polyvinylpyrrolidone (PVP), a water-soluble commodity polymer, was crosslinked using benzophenone and UV irradiation to produce a water-insoluble PVP coating. The nanometric scale roughness of the coating was achieved by the addition of silica nanoparticles (NPs) in the coating. The micrometric scale roughness was achieved by forming vertical pillars of PVP/NP coating. To prepare these pillars, a perforated polystyrene (PS) template was filled with a PVP/NP suspension. Micrometer scale vertical pillars of PVP/silica NPs were produced by this method, which allowed us to tune the wettability of the surface, by combining the micrometric scale roughness of the pillars to the nanometric scale roughness provided by the nanoparticles at the surface. By adjusting the various experimental parameters, a hydrophobic PVP coating was prepared with a water contact angle of 110°, resulting in an improvement of more than 80% compared to the bare flat film with an equal amount of nanoparticles. This study paves the way for the development of a more simplified experimental approach, relying on a blend of polymers containing PVP and NPs, to form the micro/nano-structured PVP pillars directly after the deposition step and the selective etching of the sacrificial major phase.https://www.mdpi.com/1996-1944/17/3/574hydrophobic coatinghydrophilic polymerpolyvinylpyrrolidoneUV crosslinkingmicro- and nanostructuration |
| spellingShingle | Syrine Jebali Marylène Vayer Khaled Belal Christophe Sinturel Engineered Nanocomposite Coatings: From Water-Soluble Polymer to Advanced Hydrophobic Performances Materials hydrophobic coating hydrophilic polymer polyvinylpyrrolidone UV crosslinking micro- and nanostructuration |
| title | Engineered Nanocomposite Coatings: From Water-Soluble Polymer to Advanced Hydrophobic Performances |
| title_full | Engineered Nanocomposite Coatings: From Water-Soluble Polymer to Advanced Hydrophobic Performances |
| title_fullStr | Engineered Nanocomposite Coatings: From Water-Soluble Polymer to Advanced Hydrophobic Performances |
| title_full_unstemmed | Engineered Nanocomposite Coatings: From Water-Soluble Polymer to Advanced Hydrophobic Performances |
| title_short | Engineered Nanocomposite Coatings: From Water-Soluble Polymer to Advanced Hydrophobic Performances |
| title_sort | engineered nanocomposite coatings from water soluble polymer to advanced hydrophobic performances |
| topic | hydrophobic coating hydrophilic polymer polyvinylpyrrolidone UV crosslinking micro- and nanostructuration |
| url | https://www.mdpi.com/1996-1944/17/3/574 |
| work_keys_str_mv | AT syrinejebali engineerednanocompositecoatingsfromwatersolublepolymertoadvancedhydrophobicperformances AT marylenevayer engineerednanocompositecoatingsfromwatersolublepolymertoadvancedhydrophobicperformances AT khaledbelal engineerednanocompositecoatingsfromwatersolublepolymertoadvancedhydrophobicperformances AT christophesinturel engineerednanocompositecoatingsfromwatersolublepolymertoadvancedhydrophobicperformances |