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Zäll, E., Järn, M., Karlsson, S., Tryggeson, H., Tuominen, M., Sundin, M. & Wågberg, T. (2023). Aerosol-based deposition of broadband antireflective silica coating with closed mesoporous structure. Solar Energy Materials and Solar Cells, 250, 112078-112078, Article ID 112078.
Open this publication in new window or tab >>Aerosol-based deposition of broadband antireflective silica coating with closed mesoporous structure
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2023 (English)In: Solar Energy Materials and Solar Cells, ISSN 0927-0248, E-ISSN 1879-3398, Vol. 250, p. 112078-112078, article id 112078Article in journal (Refereed) Published
Abstract [en]

Solar energy will be a crucial part of the sustainable, fossil free energy production of the future. A majority of this will be produced by solar collectors and photovoltaics. Important for the efficient utilization of the incident solar energy for both technologies are a cover glass with antireflective coatings giving it a high solar transmittance. In the current paper we describe the development of antireflective mesoporous silica coatings on low-iron float glass using the aerosol-based nFOG™ deposition technique. The coatings exhibit a hexagonal and closed pore structure, high smoothness, superhydrophilic properties (contact angle <5°) and consistent thicknesses of approximately 110 nm. This is in line with optimal thickness determined from simulations of the antireflective behavior. Low-iron float glass coated on both sides show a highly reproducible solar weighted transmittance of 95% in the wavelength range 300–2500 nm and an antireflective effect increasing with incident angle. The smoothness, closed pores and low contact angle indicate a high cleanability, which in combination with the high transmittance render a competitive broadband antireflective coating well adapted for solar glass applications.

Keywords
Antireflective coating, Aerosol-based deposition, nFOG™, Hexagonal mesoporous silica, Solar collector, Solar glass
National Category
Materials Engineering Manufacturing, Surface and Joining Technology Materials Chemistry Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:ri:diva-61135 (URN)10.1016/j.solmat.2022.112078 (DOI)
Projects
Development of Functional Coatings on Cover Glass for Produktion of more Efficient Solar CollectorsTransparent multifunctional thin films on low–iron float glass for solar energy applications
Funder
Vinnova, 2018-02588Swedish Energy Agency, 52487-1Swedish Energy Agency, 45419-1Swedish Research Council, 2017–59504862
Note

Funding: Vinnova 2018-02588. Energimyndigheten 45419-1. Vetenskapsrådet 2017-59504862

Available from: 2022-11-08 Created: 2022-11-08 Last updated: 2024-03-25Bibliographically approved
Zäll, E., Järn, M., Karlsson, S., Tryggeson, H., Tuominen, M., Sundin, M. & Wågberg, T. (2023). Aerosol-based deposition of broadband antireflective silica coating withclosed mesoporous structure. Solar Energy Materials and Solar Cells, 250, 112078, Article ID 112078.
Open this publication in new window or tab >>Aerosol-based deposition of broadband antireflective silica coating withclosed mesoporous structure
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2023 (English)In: Solar Energy Materials and Solar Cells, ISSN 0927-0248, E-ISSN 1879-3398, Vol. 250, p. 112078-, article id 112078Article in journal (Refereed) Published
Abstract [en]

Solar energy will be a crucial part of the sustainable, fossil free energy production of the future. Amajority of this will be produced by solar collectors and photovoltaics. Important for the efficientutilization of the incident solar energy for both technologies are a cover glass with antireflectivecoatings giving it a high solar transmittance. In the current paper we describe the development ofantireflective mesoporous silica coatings on low-iron float glass using the aerosol-based nFOGTMdeposition technique. The coatings exhibit a hexagonal and closed pore structure, a high smoothness,and consistent thicknesses of approximately 110 nm. This is in line with optimal thicknessesdetermined from simulations of the antireflective behavior. Low-iron float glass coated on both sidesshow a highly reproducible solar weighted transmittance of 95 % in the wavelength range 300-2500nm and an antireflective effect increasing with incident angle. The smoothness and closed poresassociated with high cleanability, as well as high transmittance makes it a competitive broadbandantireflective coating well adapted for solar glass applications.

Keywords
Antireflective coating, aerosol-based deposition, nFOG, hexagonal mesoporous silica, solar collector, solar glass
National Category
Physical Chemistry Materials Chemistry Inorganic Chemistry
Identifiers
urn:nbn:se:ri:diva-60001 (URN)10.2139/ssrn.4130248 (DOI)2-s2.0-85141234079 (Scopus ID)
Projects
Development of Functional Coatings on Cover Glass for Produktion of more Efficient Solar Collectors
Funder
Vinnova, 2018-02588
Note

Funding: Vinnova 2018-02588

Available from: 2022-08-29 Created: 2022-08-29 Last updated: 2024-05-23Bibliographically approved
Reverdy, C., Belgacem, N., Sedighi Moghaddam, M., Sundin, M., Swerin, A. & Bras, J. (2018). One-step superhydrophobic coating using hydrophobized cellulose nanofibrils. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 544, 152-158
Open this publication in new window or tab >>One-step superhydrophobic coating using hydrophobized cellulose nanofibrils
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2018 (English)In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, ISSN 0927-7757, E-ISSN 1873-4359, Vol. 544, p. 152-158Article in journal (Refereed) Published
Abstract [en]

Superhydrophobic surfaces have high potential in self-cleaning and anti-fouling applications. We developed a one-step superhydrophobic coating formulation containing sodium oleate (NaOl), hydrophobized precipitated calcium carbonate and biobased cellulose nanofibrils (CNFs) hydrophobized with either alkyl ketene dimer (AKD) or amino propyl trimethoxy silane (APMS) as a binder to fix and distribute the particles. Coatings were made on paperboard and the wetting behavior of the surface was assessed. Static, advancing and receding contact angles with water as well as roll-off and water shedding angle were compared to coatings made with styrene butadiene latex as binder instead of CNFs. Modifications with alkyl ketene dimer showed most promising results for a viable process in achieving superhydrophobic paperboard but required reformulation of the coating with optimized and reduced amount of NaOl to avoid surfactant-induced wetting via excess NaOl. A static water contact angle of 150° was reached for the CNF-AKD. The use of CNFs enables the improvement of coating quality avoiding cracking with the use of nanocellulose as a renewable binder.

Keywords
Cellulose nanofibrils, Paperboard, Superhydrophobicity, Binders, Bins, Calcium carbonate, Cellulose, Coatings, Contact angle, Nanofibers, Paperboards, Sodium Carbonate, Styrene, Wetting, Advancing and receding contact angles, Cellulose nanofibrils (CNFs), Precipitated calcium carbonate, Styrene butadiene latices, Super-hydrophobic surfaces, Superhydrophobic coatings, Hydrophobicity, 1, 3 butadiene, dimer, ketene derivative, latex, nanofiber, oleate sodium, silane derivative, surfactant, water, Article, chemical modification, material coating, priority journal, scanning electron microscopy, water absorption, Cellulose Fibers, Coating, Crazing, Dimers, Sodium Compounds
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-33423 (URN)10.1016/j.colsurfa.2017.12.059 (DOI)2-s2.0-85042307822 (Scopus ID)
Note

Funding details: ANR-16-CARN-0025-01, Association Instituts Carnot; Funding details: ANR-11-LABX-0030, Labex; Funding details: COST, European Cooperation in Science and Technology; Funding details: AIR, American Institutes for Research; Funding details: Stiftelsen Nils och Dorthi Troëdssons Forskningsfond;

Available from: 2018-03-09 Created: 2018-03-09 Last updated: 2024-03-25Bibliographically approved
Swerin, A., Sundin, M. & Wåhlander, M. (2016). One-pot waterborne superhydrophobic pigment coatings at high solids with improved scratch and water resistance. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 495, 79-86
Open this publication in new window or tab >>One-pot waterborne superhydrophobic pigment coatings at high solids with improved scratch and water resistance
2016 (English)In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, ISSN 0927-7757, E-ISSN 1873-4359, Vol. 495, p. 79-86Article in journal (Refereed) Published
Abstract [en]

A pigment coating was developed to achieve superhydrophobicity in one step from a waterborne formulation containing aragonite calcium carbonate, hydrophobized using sodium oleate, latex binder and cross-linker. Coatings formulated ≤50 mass% and applied to polyethylene coated paperboard substrates displayed typical superhydrophobic features: water contact angles ≥150°, low roll-off angle and low stain sizes, but poor scratch and water resistance as well as foaming issues during preparation. Reformulation at higher solids content significantly improved scratch and water resistance properties. Water rinsing of the dried coatings further increased the water barrier capacity due to reduced surfactant-assisted wetting; findings were corroborated by detailed surface chemistry analyses showing the removal of surface-active components after water rinsing of the dried coatings. A plausible cause for the improved durability is the fact that capillary forces increase exponentially with increasing pigment volume fraction (power law exponent of 2.2) leading to efficient binder coverage during the early stage of pigment coating consolidation.

Place, publisher, year, edition, pages
Elsevier, 2016
Keywords
calcium carbonate, coating, contact angle, durability, scratch resistance, superhydrophobicity, surfactant, water resistance, wetting
National Category
Other Chemistry Topics Materials Chemistry
Identifiers
urn:nbn:se:ri:diva-101 (URN)10.1016/j.colsurfa.2016.01.058 (DOI)2-s2.0-84957831628 (Scopus ID)
Available from: 2016-05-31 Created: 2016-04-28 Last updated: 2024-03-25Bibliographically approved
Charlène, R., Sedighi Moghaddam, M., Sundin, M., Swerin, A. & Julien, B. (2016). Superhydrophobic surfaces manufacturing with nanocellulose. In: N.I.C.E. 2016 - The 3rd International Conference on Bioinspired and Biobased Chemistry & Materials: . Paper presented at 3rd International Conference on Bioinspired and Biobased Chemistry & Materials, October 16-19, 2016, Nice, France.
Open this publication in new window or tab >>Superhydrophobic surfaces manufacturing with nanocellulose
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2016 (English)In: N.I.C.E. 2016 - The 3rd International Conference on Bioinspired and Biobased Chemistry & Materials, 2016Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

Researchers in natural fibers see opportunities in superhydrophobicity for fabrics or paper. The first challenge with natural fiber is their high hydrophilicity when the second is the perpetual search for water born coating  in papermaking. These challenges were overcome by a one pot formulation comprising a latex binder, precipitated calcium carbonate and  fatty acids to give their hydrophobicity to pigments 1.  In this study, we want to go further by replacing the petro-sourced latex with a new kind of fibers that are cellulose nanofibers (CNF).

Inspired by the Lotus leaf, superhydrophobic surfaces have been a center of interest in the last decade because of their high potential in industry for a variety of applications.  It is seen as the next generation of surface for anti-fouling and corrosive retardant in navy industry but also  in general  anti corrosive materials industry.  Now widely studied , mechanisms for manufacturing superhydrophobicity are well understood. Born from the alliance of low surface energy chemistry and physical structuration of surface, superhydrophobic materials give a water contact angle above 150° and a slidding angle below 10°.

National Category
Other Chemistry Topics Manufacturing, Surface and Joining Technology
Identifiers
urn:nbn:se:ri:diva-16284 (URN)
Conference
3rd International Conference on Bioinspired and Biobased Chemistry & Materials, October 16-19, 2016, Nice, France
Available from: 2016-10-19 Created: 2016-10-19 Last updated: 2024-03-25Bibliographically approved
Swerin, A., Sundin, M. & Wåhlander, M. (2015). Formulation of a pigmented foam aimed for superhydrophobic coatings. In: Paper Conference and Trade Show (PaperCon 2015): . Paper presented at Paper Conference and Trade Show (PaperCon 2015), April 19-22, 2015, Atlanta, US.
Open this publication in new window or tab >>Formulation of a pigmented foam aimed for superhydrophobic coatings
2015 (English)In: Paper Conference and Trade Show (PaperCon 2015), 2015Conference paper, Oral presentation only (Refereed)
Abstract [en]

Fundamental studies of superhydrophobicity have evolved toward several industrial applications. The present study concerns the formulation of pigmented foam aimed for water-borne superhydrophobic surface layers. An industrially viable process for a one-step water-borne superhydrophobic coating was developed in collaboration with industrial partners. A typical formulation contained calcium carbonate (preferably aragonite type), sodium oleate and carboxylic latex binder. The pigmented foam was laboratory rod coated onto paperboard substrates. During the drying the foamed structure collapses into a pigmented coating. The contact and rolling-off angles, droplet stain size and Cobb value were evaluated for different amounts of the added ingredients. The frictional resistance and water vapour permeability was measured for some of the samples.

More recent results show that through careful reformulation of the coating dispersions these pigmented foams can be prepared at considerably higher solids content, which is of utmost relevance to decrease drying time if implemented in an industrial process. It was also shown that the hydrostatic water resistance (Cobb value) and the mechanical robustness could be substantially improved compared to previous results. Surface spectroscopy data provided an explanation for the increased water resistance.

Keywords
pigment, foam, coating, paperboard, superhydrophobicity
National Category
Materials Chemistry Other Chemistry Topics
Identifiers
urn:nbn:se:ri:diva-147 (URN)
Conference
Paper Conference and Trade Show (PaperCon 2015), April 19-22, 2015, Atlanta, US
Note

SP Chemistry, Materials and Surfaces publication nr: B1618

Available from: 2016-06-07 Created: 2016-06-07 Last updated: 2024-03-25Bibliographically approved
Swerin, A., Sundin, M. & Wåhlander, M. (2015). Formulation of superhydrophobic pigment coatings. In: Paper Conference and Trade Show (PaperCon 2015): . Paper presented at Paper Conference and Trade Show (PaperCon 2015), April 19-22, 2015, Atlanta, US (pp. 1410-1424). TAPPI Press, 2
Open this publication in new window or tab >>Formulation of superhydrophobic pigment coatings
2015 (English)In: Paper Conference and Trade Show (PaperCon 2015), TAPPI Press, 2015, Vol. 2, p. 1410-1424Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
TAPPI Press, 2015
National Category
Materials Chemistry Other Chemistry Topics
Identifiers
urn:nbn:se:ri:diva-144 (URN)2-s2.0-84969580079 (Scopus ID)9781510818873 (ISBN)
Conference
Paper Conference and Trade Show (PaperCon 2015), April 19-22, 2015, Atlanta, US
Note

SP Chemistry, Materials and Surfaces publication nr: A3671

Available from: 2016-06-07 Created: 2016-06-07 Last updated: 2024-03-25Bibliographically approved
Siljeström, S., Lausmaa, J., Hode, T., Sundin, M. & Sjövall, P. (2011). Structural effects of C-60(+) bombardment on various natural mineral samples - Application to analysis of organic phases in geological samples (ed.). Applied Surface Science, 257(21), 9199-9206
Open this publication in new window or tab >>Structural effects of C-60(+) bombardment on various natural mineral samples - Application to analysis of organic phases in geological samples
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2011 (English)In: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, Vol. 257, no 21, p. 9199-9206Article in journal (Refereed) Published
Abstract [en]

Organic phases trapped inside natural mineral samples are of considerable interest in astrobiology, geochemistry and geobiology. Examples of such organic phases are microfossils, kerogen and oil. Information about these phases is usually retrieved through bulk crushing of the rock which means both a risk of contamination and that the composition and spatial distribution of the organics to its host mineral is lost. An attractive of way to retrieve information about the organics in the rock is depth profiling using a focused ion beam. Recently, it was shown that it is possible to obtain detailed mass spectrometric information from oil-bearing fluid inclusions, i.e. small amounts of oil trapped inside a mineral matrix, using ToF-SIMS. Using a 10 keV C-60(+) sputter beam and a 25 keV Bi-3(+) analysis beam, oil-bearing inclusions in different minerals were opened and analysed individually. However, sputtering with a C-60(+) beam also induced other changes to the mineral surface, such as formation of topographic features and carbon deposition. In this paper, the cause of these changes is explored and the consequences of the sputter-induced features on the analysis of organic phases in natural mineral samples (quartz, calcite and fluorite) in general and fluid inclusions in particular are discussed. The dominating topographical features that were observed when a several micrometers deep crater is sputtered with 10 keV C-60(+) ions on a natural mineral surface are conical-shaped and ridge-like structures that may rise several micrometers, pointing in the direction of the incident C-60(+) ion beam, on an otherwise flat crater bottom. The sputter-induced structures were found to appear at places with different chemistry than the host mineral, including other minerals phases and fluid inclusions, while structural defects in the host material, such as polishing marks or scratches, did not necessarily result in sputter-induced structures. The ridge-like structures were often covered by a thick layer of deposited carbon. Despite the appearance of the sputter-induced structures and carbon deposition, most oil-bearing inclusions could successfully be opened and analysed. However, smaller inclusion (

Keywords
Structural effects of C-60(+) bombardment on various natural mineral samples - Application to analysis of organic phases in geological samples SIMS, C-60, Carbon deposition, Topography, Mineral, Fluid inclusions, Geological samples, Depth profiling
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-26303 (URN)10.1016/j.apsusc.2011.06.003 (DOI)
Note

A3011

Available from: 2016-12-08 Created: 2016-12-08 Last updated: 2024-03-25Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0009-0009-1580-7273

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