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Silica aerogel-encapsulated biocide crystals for low-loading antifouling coatings : rheology, water absorption, hardness, and biofouling protection / Tenna Frydenberg in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)
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Titre : Silica aerogel-encapsulated biocide crystals for low-loading antifouling coatings : rheology, water absorption, hardness, and biofouling protection Type de document : texte imprimé Auteurs : Tenna Frydenberg, Auteur ; Claus Erik Weinell, Auteur ; Kim Dam-Johansen, Auteur ; Eva Wallström, Auteur ; Søren Kiil, Auteur Année de publication : 2023 Article en page(s) : p. 935-947 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aérogels
Caractérisation
Encapsulation
Formulation (Génie chimique)
Humidité -- Absorption:Eau -- Absorption
Pyrithione de cuivre
Résistance à la salissure
Revêtements antisalissures
Rhéologie
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.Index. décimale : 667.9 Revêtements et enduits Résumé : To protect surfaces against marine biofouling, the continuous leaching of biocides, such as cuprous oxide (Cu2O) and copper pyrithione (CuPT), from antifouling coatings is a widespread and effective method. However, from an environmental and economic perspective (costs of raw materials), a high biocide loading of formulations is not sustainable. Silica aerogel-encapsulated CuPT is a promising approach to reduce Cu2O and CuPT loadings without compromising the mechanical properties and antifouling performance of the coating. In the present study, silica aerogels, with varying CuPT loadings, were incorporated into model coating formulations, and selected coating properties, i.e., rheology, water absorption, and hardness, were measured and evaluated. Furthermore, to demonstrate antifouling performance, static exposure testing with the aerogel-containing coatings was performed. The level of CuPT loading of the silica aerogels did not have a significant influence on neither the water absorption nor the rheology of the coating. However, an increase in the CuPT loading of the aerogel from 0 to 80 wt% reduced the coating’s pendulum hardness from 61 to 37 s. Additionally, compared to a reference coating with nonencapsulated CuPT, results demonstrate that a coating containing silica aerogel-encapsulated CuPT provides a 17% higher antifouling resistance when evaluated according to guidance from The European Chemicals Agency. Note de contenu : - EXPERIMENTAL : Materials - Preparation of coating samples - Coating characterization - Water absorption - Static panel exposure - Fouling evaluation
- RESULTS AND DISCUSSION : The influence of aerogels on selected coating properties - Static panel exposure test
- Table 1 : Silica aerogels, used for coating formulation, with varying copper pyrithione (CuPT) concentrations
- Table 2 : Composition and formulation parameters of model coatings used to investigate the influence of aerogels on film properties
- Table 3 : Composition and formulation parameters of coatings used for static panel exposure test
- Table 4 : ECHA guidance, (a) fouling coverage is evaluated in percentage and each interval is given a rating (1–4), (b) the type of fouling is divided into four fouling categories, each fouling category is given a weighted coverage rating, (c) the overall efficacy is categorized based on calculated fouling resistanceTable 5 Viscosities of model coatings containing 2 wt% of various aerogels measured at shear rates of 0.5 and 6 s−1DOI : https://doi.org/10.1007/s11998-022-00713-y En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00713-y.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39438
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 3 (05/2023) . - p. 935-947[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24069 - Périodique Bibliothèque principale Documentaires Disponible Siloxane coating with epoxy modification : optimization of adhesion to improve steel corrosion protection / M. Barletta in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)
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Titre : Siloxane coating with epoxy modification : optimization of adhesion to improve steel corrosion protection Type de document : texte imprimé Auteurs : M. Barletta, Auteur ; P. Moretti, Auteur ; E. Pizzi, Auteur ; F. Trovalusci, Auteur Année de publication : 2022 Article en page(s) : p. 839-849 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier L'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique.
L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1.
C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple.
Anticorrosifs
Anticorrosion
Caractérisation
Epaisseur -- Mesure
Epoxydes
Matériaux hybrides
Métaux -- Revêtements protecteurs
Procédés de fabrication
Revêtements organiques
Rugosité
SiliconesLes silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki).Index. décimale : 667.9 Revêtements et enduits Résumé : This study focuses on the possibility of using siloxane resins with epoxy modification to delay corrosion of metal substrates for hydraulic applications. Formulations aimed at metal protection were designed, without including anticorrosive additives, and deposited on 11SMnPb37 steel. Thin monolayer films were obtained by dip coating in different process conditions, avoiding primers. The developed procedure was simple and able to provide solid and well-anchored coatings. They were characterized in terms of morphology, scratch and wear endurance, and resistance to a corrosive environment. The optimum formulation and deposition parameters were found. The selected coating showed remarkable adhesion to the substrate, good mechanical properties, and resistance in a saline environment, proving to be suitable as a protective barrier against corrosion. The protective effect was ensured not by additives but through the excellent adhesion of the coating and its endurance to scratch and wear. Note de contenu : - Materials and manufacturing process
- Characterization procedure
- Table 1 : Coatings developed in the experiments
- Table 2 : Mean thickness values of the coatings obtained in various conditions according to Table 1 (alkaline pretreatment of the support or absence, resin concentration, extraction speed)
- Table 3 : Measured roughness (Ra and Rz) of uncoated sample and selected coatings, AC3S10, AC3S100, C3S10, and C3S100DOI : https://doi.org/10.1007/s11998-021-00594-7 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00594-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38079
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 3 (05/2022) . - p. 839-849[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23605 - Périodique Bibliothèque principale Documentaires Disponible Silylated linseed oil - invisible wood protection ? / Ewelina Depczynska in SURFACE COATINGS INTERNATIONAL, Vol. 102.1 (02-03/2019)
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Titre : Silylated linseed oil - invisible wood protection ? Type de document : texte imprimé Auteurs : Ewelina Depczynska, Auteur ; Monika Furgal, Auteur ; Bartlomiej Mazela, Auteur ; Waldemar Perdoch, Auteur Année de publication : 2019 Article en page(s) : p. 22-26 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biopolymères
Bois -- Revêtements protecteurs
Caractérisation
Chimie analytique
Huile de linL'huile de lin ou "huile de graines de lin" est une huile de couleur jaune d'or, tirée des graines mûres du lin cultivé, pressées à froid et/ou à chaud ; parfois elle est extraite par un solvant, en vue de l'usage industriel ou artistique, principalement comme siccatif, ou huile auto-siccative.
Les utilisations de l'huile de lin dérivent de sa richesse en acides gras polyinsaturés, en particulier en acides linolénique et linoléique, qui lui doivent leur nom.
L'huile de lin polymérise spontanément à l'air, avec une réaction exothermique : un chiffon imbibé d'huile peut ainsi, dans certaines conditions, s'enflammer spontanément.
Pour ses propriétés de polymère, l'huile de lin est employée seule, ou mélangée à d'autres huiles, résines et solvants, et est utilisée en tant que : Imprégnateur et protecteur des bois à l'intérieur comme à l'extérieur : protection contre l'humidité, les champignons et insectes, et contre la poussière par son caractère antistatique, composant de certains vernis de finition, liant de broyage pour la peinture à l'huile, agent plastifiant du mastic de vitrier, agent durcisseur de diverses préparations, agent de cohérence et liant dans la fabrication du linoléum.
Hydrophobie
SilylationLa silylation est l'introduction d'un groupe silyle, généralement substitué (R3Si–), dans une molécule.
ViscositéIndex. décimale : 667.9 Revêtements et enduits Résumé : Synthesis of a non-film forming product for wood protection based on silylated linseed oil with the objective of obtaining an innovative oil-based product for superficial wood treatment with a permanent hydrophobic effect is described. Product containing different molar ratios of oil and silane were synthesised and characterised. The goals were to monitor the silylation process with the use of VTMOS and to evaluate some of the physico-chemical properties of the polymers obtained. The structures of the new polymers were determined by 1H and 13C NMR spectroscopy and selected physico-chemical properties (eg. iodine value, viscosity) were also determined. The results show that the modified oil is storagestable and its basic functional properties in a liquid state are comparable with reference products. Physical porperty data indicates that the resultant bio-based polymers are suitable for wood treatment as non-film forming products. Note de contenu : - Materials
- Methods
- Characterisation of silylated linseed oil
- Fig. 1 : Chemical composition of the most commonly used natural oils in wood preservatives
- Fig. 2 : Variation of pressure with time during silylation of linseed oil
- Fig. 3 : Variation of pressure with time during silylation of linseed oil
- Table 1 : Reaction mixture composition and time of silylation reaction
- Table 2 : Viscosity of reactants and products in the silylation of linseed oil
- Table 3 : GC-FID analysis for reactants and products in selected silylation reactions
- Table 4 : Iodine values for selected reactions
- Table 5 : Chemical shifts (δ) and assignment of main resonances in the 1H NMR spectrum of raw linseed oil
- Table 6 : Chemical shifts (δ) and assignment of main resonances in the 1H NRM spectrum from product of reaction 1
- Table 7 : Chemical shifts (δ) and assignment of main resonances in the 1H NRM spectrum of reaction 9 and VTMS
- Table 8 : Chemical shifts (δ) and assignment of main resonances in the 13C NRM spectrum of raw linseed oil
- Table 9 : Chemical shifts (δ) and assignment of main resonances in the 13C NRM spectrum from product of reaction 9
- Table 10 : Chemical shifts (δ) and assignment of main resonances in the 13C NRM spectrum from product of reaction 1
- Table 11 : UV-VIS absorption (λ) 385 nm) for linseed oil and products from selected reactionsEn ligne : https://drive.google.com/file/d/1ZQUjYsZ0xrI03_r8Ie23-oTAidM1ck0j/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32021
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Code-barres Cote Support Localisation Section Disponibilité 20740 - Périodique Bibliothèque principale Documentaires Disponible Simple and effective particle-size characterization of opaque emulsions / Lucile Bonnin in SOFW JOURNAL, Vol. 144, N° 10 (10/2018)
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Titre : Simple and effective particle-size characterization of opaque emulsions Type de document : texte imprimé Auteurs : Lucile Bonnin, Auteur ; Burkhard Müller, Auteur ; Thomas Gassenmeier, Auteur ; Reinhard H. H. Neubert, Auteur Année de publication : 2018 Article en page(s) : p. 38-44 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Emulsions -- Emploi en cosmétologie
Emulsions -- Stabilité
Evaluation
Granulométrie
Taille des particulesIndex. décimale : 668.5 Parfums et cosmétiques Résumé : Because emulsions are metastable, predicting their stability and phase bahavior is a crucial topic of research. Indeed, emulsions are widely used in the chemical industry and formulators must be able to asses their stability e.g. life-cycle or shelves-life. Although several devices, avaible on the market, are claiming to be able to asses emulsions' stability, they often use laser or ultrasound diffraction techniques which offer limited capabilities for studying opaque emulsions. This study is decribing how the usage of a simple light microscope, already present as a standard equipment in lots of laboratories, can lead to the precise assessment of the particle-size distribution of various cosmetic o/w emulsions. The light microscope was equipped with an objective (40x) having a negative phase-contrast ring. The particle-size characterization by means of phase-contrast microscopy enabled to draw conclusion about the stability over time of two o/w emulsions and to observe the influence of additives on their phase behavior. This novel image analysis method delivered relevant information about the particle-size distribution i.e. stability, of the emulsions at an earlier stage than classical stability tests mathods. Note de contenu : - Cosmetic O/W opaque emulsion : composition and formulation
- Phase-contrast microscopy
- Fig. 1 : Appearance of the o/w opaque cosmetic emulsion
- Fig. 2 : Microstructure of the o/w emulsion forming a gel network (re-drawn from Klein [9])
- Fig. 3 : 40x objective equipped with a negative phase-contrast (Ph 2) mode
- Fig. 4 : Representation of the phase-contrast microscopy base principle
- Fig. 5 : Image analysis process of the o/w emulsion under phase-contrast microscopy
- Fig. 6 : O/W emulsion's photomicrograph after automatic recognition of the particles clustered according to their radius (R) size
- Fig. 7 : O/W emulsions containing either no (a) or 1% w/w additive (b) under phase-contrast light microscopy at t0
- Fig. 8 : Particle-size distribution of the o/w emulsion containing no additive at t0 and after 3 months storage at RT with N(t0)=13873 and N(3 months)= 12661
- Fig. 9 : Particle-size distribution of the o/w emulsion containing 1% w/w of additive at t0 and after 3 months storage at RT with N(t0)= 10689 and N(3 months)= 10229
- Table 1 : Composition of the opaque cosmetic o/w emulsion
- Table 2 : Statistical results of the particle count for both o/w emulsions at t0 and after 3 months storage at RTEn ligne : https://drive.google.com/file/d/1tV5s3MbmMDc_ID0VGKhlM-NRRxS4LjVX/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31328
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Code-barres Cote Support Localisation Section Disponibilité 20515 - Périodique Bibliothèque principale Documentaires Disponible A simple method for the fabrication of silica-based superhydrophobic surfaces / Qianqian Shang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 4 (07/2014)
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Titre : A simple method for the fabrication of silica-based superhydrophobic surfaces Type de document : texte imprimé Auteurs : Qianqian Shang, Auteur ; Yonghong Zhou, Auteur ; Guomin Xiao, Auteur Année de publication : 2014 Article en page(s) : p. 509-515 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Angle de contact
Caractérisation
Dépôt par pulvérisation
Hydrophobie
Particules (matières)
Revêtements protecteurs
Revêtements:Peinture
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.Index. décimale : 667.9 Revêtements et enduits Résumé : The present article reports on a simple and convenient method for the fabrication of superhydrophobic surfaces based on silica particles by spraying the as-prepared silica suspension containing silica sol and silica microspheres on the substrate. The morphologies of the silica particulate coatings could be controlled by varying the silica microsphere concentration. The silica particulate coatings as prepared were exceptionally rough and superhydrophilic, with water contact angles less than 5°. The surface silanol groups of the hydrophilic coatings could be functionalized using 1H,1H,2H,2H-perfluorodecyltriethoxysilane to form hydrophobic groups. The resulting surface showed excellent superhydrophobic property with water contact angle up to 165.6 ± 0.9° and sliding angle of 3.5 ± 0.4°. In addition, the superhydrophobicity of the coating possessed a good stability after 3 months of exposure in air for a wide range of pH values. Note de contenu : - Materials
- Fabrication of the silica particulate coatings
- CharacterizationsDOI : 10.1007/s11998-014-9573-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9573-z.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21712
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Code-barres Cote Support Localisation Section Disponibilité 16424 - Périodique Bibliothèque principale Documentaires Disponible A simple method to make mechanically robust, adhesive and superhydrophobic surface based on epoxy resin / Aoyun Zhuang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 3 (05/2015)
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PermalinkSimplification of interior latex paint using biopolymer to replace rheological additives and calcium carbonate extender / Lei Jong in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 6 (11/2021)
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PermalinkSimulation, synthesis, characterisation and dyeing properties of a fluorescent hemicyanine dye / Songsong Tang in COLORATION TECHNOLOGY, Vol. 136, N° 1 (02/2020)
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PermalinkSimultaneous low-salt dyeing and anti-bacterial finishing of cotton fabric with reactive dye and N-halamine / Meng Zhang in COLORATION TECHNOLOGY, Vol. 137, N° 5 (10/2021)
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PermalinkSkin characteristics of Cervus Elaphus L. from Republic of Tuva in Russia / Urana Dandar in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 5 (05/2014)
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PermalinkSlippery lubricant-infused intertwining superhydrophobic matrix: preparation and enhanced resistance against abiotic corrosion and microbiologically influenced corrosion / Yinsha Wei in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 2 (03/2023)
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PermalinkSlow-release fertilizers based on lignin–sodium alginate biopolymeric blend for sustained N–P nutrients release / Fatima-Zahra El Bouchtaoui in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 5 (09/2022)
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PermalinkSol–gel hybrid films based on organosilanes with long alkyl chains in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 5 (09/2020)
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PermalinkSome complementary scratch resistance characterization methods / Lan Mi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 3, N° 4 (10/2006)
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PermalinkSonochemically sol–gel derived coating of textiles using heterojunction SnO2/ZnO/chitosan bionanocomposites: in vitro antibacterial evaluation / Parisa Kamali in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 5 (09/2018)
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PermalinkSorbitol-based aqueous cyclic carbonate dispersion for waterborne nonisocyanate polyurethane coatings via an environment-friendly route / Zhijun Wu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 3 (05/2019)
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PermalinkSoy protein isolate reinforced yak skin collagen edible films for ultraviolet barring function / Ruirui Wang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 4 (07-08/2019)
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PermalinkSpecific crosslinking effects of poly(epichlorohydrin)-triol on urethane polymer matrix of castor seel oil-based coatings / T. O. Siyanbola in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 1 (01/2021)
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PermalinkStabilisation of surfactant-free emulsions / Romain Lorentz in PERSONAL CARE EUROPE, Vol. 8, N° 4 (06/2015)
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PermalinkStandardized extract of wild apple fruit in alkyl-polyglucoside-based cosmetic cream – estimation of stability, safety, antioxidant activity and efficiency / D. Stojiljkovic in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 40, N° 3 (06/2018)
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