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The effect of formulation variables on fouling-release performance of stratified siloxane-polyurethane coatings / Rajan B. Bodkhe in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 3 (05/2012)
[article]
Titre : The effect of formulation variables on fouling-release performance of stratified siloxane-polyurethane coatings Type de document : texte imprimé Auteurs : Rajan B. Bodkhe, Auteur ; Stephanie E. M. Thompson, Auteur ; Carolyn Yehle, Auteur ; Nicholas Cilz, Auteur ; Justin W. Daniels, Auteur ; Shane J. Stafslien, Auteur ; Maureen E. Callow, Auteur ; James A. Callow, Auteur ; Dean C. Webster, Auteur Année de publication : 2012 Article en page(s) : p. 235-249 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Algues marines
Marines (peinture)
Polyuréthanes
Salissures marines
SiloxanesLes siloxanes sont une classe de composés du silicium dont la formule empirique est R2SiO, où R est un groupe radical qui peut être organique. Des exemples représentatifs sont [SiO(CH3)2]n (diméthylsiloxane) et [SiO(C6H5)2]n (diphénylsiloxane), où n est typiquement supérieur à 4. Ces composés peuvent être des hybrides organiques et inorganiques. Les chaînes organiques confèrent au composé des propriétés hydrophobes alors que la chaîne principale -Si-O-Si-O- est purement inorganique.
Le mot siloxane est dérivé de Silicium, Oxygène et alkane.
Des siloxanes peuvent être trouvés dans des produits tels que des cosmétiques, des déodorants, des enduits hydrophobes pour pare-brise, des peintures et certains savons.
Les siloxanes polymérisés (polysiloxanes) sont appelés silicones1,2.
Le siloxane est massivement utilisé dans l'industrie cosmétique (rouges à lèvre, conditionneurs et shampooings, déodorants, etc.).
Une application récente du Siloxane D5 (2001) a été trouvée dans le nettoyage à sec des textiles en remplacement du perchloroéthylène. Ce procédé est très répandu aux États-Unis et au Royaume-Uni. Il devient de plus en plus courant en Europe continentale dont la France, afin de promouvoir l'usage de procédés écologiques et respectueux de la santé humaine.Index. décimale : 667.9 Revêtements et enduits Résumé : The effects of formulation variables, such as type of polyol, solvent type and solvent content, and coating application method, on the surface properties of siloxane–polyurethane fouling-release coatings were explored. Fouling-release coatings allow the easy removal of marine organisms from a ship’s hull via the application of a shear force to the surface. Self-stratified siloxane–polyurethane coatings are a new approach to a tough fouling-release coating system. Combinatorial High Throughput Experimentation was employed to formulate and characterize 24 different siloxane–polyurethane coatings applied using drawdown and drop-casting methods. The resulting coatings were tested for surface energy using contact angle measurements. The fouling-release performance of the coatings was tested using a number of diverse marine organisms including bacteria (Halomonas pacifica and Cytophaga lytica), sporelings (young plants) of the green macroalga (Ulva linza), diatom ((microalga) Navicula incerta), and barnacle (Amphibalanus amphitrite). The performance of the majority of the coatings was found to be better than the silicone standards, Intersleek® and Silastic® T2. An increase in solvent content in the formulations increased the surface roughness of the coatings. Coatings made with polycaprolactone polyol appeared to be somewhat rougher compared to coatings made with the acrylic polyol. The adhesion strength of sporelings of Ulva increased with an increase in solvent content and increase in surface roughness. The adhesion strengths of Ulva sporelings, C. lytica, and N. incerta were independent of application method (cast or drawdown) in contrast to H. pacifica adhesion, which was dependent on the application method. Note de contenu : - EXPERIMENTAL : Materials - Acrylic polyol synthesis - Synthesis of APT-PDMS (20000 g/mol) - Experimental design- Coating formulation - Coatings application - Water aging - Instrumentation - Biological evaluation : growth and release of Ulva sporelings - Growth and release of Navicula incerta - Bacterial biofilm adhesion - Adult barnacle adhesion - Data analysis DOI : 10.1007/s11998-011-9362-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-011-9362-x.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15949
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 9, N° 3 (05/2012) . - p. 235-249[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14188 - Périodique Bibliothèque principale Documentaires Disponible The importance of marine sustainability / Richard Scott in PERSONAL CARE EUROPE, Vol. 14, N° 2 (04/2020)
[article]
Titre : The importance of marine sustainability Type de document : texte imprimé Auteurs : Richard Scott, Auteur Année de publication : 2020 Article en page(s) : p. 64-65 Langues : Anglais (eng) Catégories : Algues marines
Biomolécules actives
Développement durable
Industrie -- Aspect de l'environnement
Ingrédients cosmétiquesIndex. décimale : 668.5 Parfums et cosmétiques Résumé : While sustainability in general has been a big focus for the personal care industry of late, perhaps the greatest surge has been with marine sustainability. We have become more aware of the extremely fragile ecosystems present in this environment and the impact industry has on them. Note de contenu : - Reef safe sun care
- The red seaweed promise
- Sustainable marine activesEn ligne : https://drive.google.com/file/d/1-Ze4Kzk_9CMdUj8Oz7Gy0MAl5y7ZJbf4/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33952
in PERSONAL CARE EUROPE > Vol. 14, N° 2 (04/2020) . - p. 64-65[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21621 - Périodique Bibliothèque principale Documentaires Disponible The influence of coating color, heartwood and sapwood, on moisture content and growth of microorganisms on the surface during outdoor exposure of Norway spruce boards / Tinh Sjökvist in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 3 (05/2019)
[article]
Titre : The influence of coating color, heartwood and sapwood, on moisture content and growth of microorganisms on the surface during outdoor exposure of Norway spruce boards Type de document : texte imprimé Auteurs : Tinh Sjökvist, Auteur ; Åsa Blom, Auteur Année de publication : 2019 Article en page(s) : p. 819-826 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Algues marines
Bioaccumulation
Bois -- Revêtements protecteurs
Bois extérieurs
Champignons microscopiques
Conifères
Crustacés
Durée de vie (Ingénierie)
Essais (technologie)
Polyacryliques
Polyalkydes
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : The use of wood contributes to the global transformation into a bio-based community. There are, however, challenges. The growth of mold, rot fungi, and algae on the coated surface is of major concern due to decreased aesthetic service life and shorter maintenance intervals. The colonization of a coated surface requires the presence of spores, nutrients, and a sufficient amount of water. This work studied the influence of using heartwood and sapwood on the moisture content (MC) and growth of microorganisms on the surface of coated Norway spruce boards [Picea abies (L.) Karst.]. The results revealed a relationship of heartwood samples having a lower MC and a lower or equal degree of biological growth on the coated surface than sapwood samples. The relationship was valid through a range of densities (309–548 kg/m3) and two different coating systems based on either an alkyd or an acrylic resin. Furthermore, the choice of coating color (red compared to white) affected the MC as the red-colored samples had a lower MC, combined with no growth of microorganisms. Note de contenu : - Table 1 : Density and growth ring width of the samples with the standard deviation listed in parentheses
- Measured MC and biological growth during the test period (October 12, 2011-August 26, 2016) with the standard deviation given in parenthesesDOI : 10.1007/s11998-018-00165-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-00165-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32593
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Code-barres Cote Support Localisation Section Disponibilité 20953 - Périodique Bibliothèque principale Documentaires Disponible Urban life dermopurifying active ingredient from the sea / Armelle Bergé in PERSONAL CARE EUROPE, Vol. 11, N° 3 (06/2017)
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Titre : Urban life dermopurifying active ingredient from the sea Type de document : texte imprimé Auteurs : Armelle Bergé, Auteur ; Laetitia Cattuzzato, Auteur ; Erwan Le Gelebart, Auteur ; Jérôme Loeuil, Auteur ; Anne-Sophie Dutailly, Auteur Année de publication : 2017 Article en page(s) : p. 58-60 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Actifs anti-pollution
Algues marines
Biomolécules actives
Dermo-cosmétologie
Peau -- Effets de la pollution atmosphérique
Peau -- Soins et hygiène
SéborrhéeIndex. décimale : 668.5 Parfums et cosmétiques Résumé : Performed tests approached pollution in different mechanisms and showed consistent protective efficacy of Acrochaetium moniiiforme extract:
• Epidermal tells protection from cadmium
• Sebaceous gland protection from urban dust
• Skin protection from ozone
In vitro data on cadmium-stressed keratinocytes showed an interesting protection capacity of Acrochaetium moniliforme extraction on the epidermal mechanical barder, botte protecting directly the cell integrity and downregulating the induction of an inflammatory state.
in vitro data on a new specifically designed protocol based on the use of human sebocyte cell line, showed that these cells are highly stimulated by urban dust and react by overproducing lipids. These new insights suggest the existence of a specific biological mechanism in oily skin : reactive sebum due to polluted environment. Acrochaetium moniliforme extract was specifically able to reduce this impact.
Finally in vivo data, obtained in a study conducted in an urban polluted environment (Shanghai), confirmed the efficacy of Acrochaetium moniliforme extract, decreasing sebum production and decreasing direct pollution impact on skin (ozonolysed squalene).
Thus, through this global protective effect (Fig 6), Acrochaetium moniliforme extract can be proposed as an urban life dermopurifying ingredient in ail kinds of formulation with anti-pollution daims. Thanks to this unique macroalgae tell technology, Seppic is able to create value from this unexplored marine resource and offer it to its customer to get rid of oily skin for long term benefits.Note de contenu : - Halting urban pollution's impact on skin
- Ozonolyzed squalene : an innovative pollution marker ; a first in Asia
- Clinical regulation of oily skin in polluted environment
- FIGURES : 1. Macroalgae cell cultivation, from isolation to freeze dried biomass - 2. Acrochaetium moniliforme (x400) - 3. Different classes of atmospheric pollutants and examples - 4. Regulation of the effects of pollution on sebocytes (in vitro model) - 5. Visible sebum regulation (-34%) in a polluted atmosphere by acrochaetium moniliforme extract - 6. Global protective proerties of acrochaetium moniliforme extract on skinEn ligne : https://drive.google.com/file/d/1j1u1YTER_ji9vb4qD4B41BDey_Y-cBMH/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28743
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Code-barres Cote Support Localisation Section Disponibilité 19024 - Périodique Bibliothèque principale Documentaires Disponible