Amphiphilic marine coating systems of self-stratified PDMS-PEG surfaces with an epoxy-polyurethane matrix / AliReza Rahimi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 3 (05/2022) . - p. 795-812 Titre : Amphiphilic marine coating systems of self-stratified PDMS-PEG surfaces with an epoxy-polyurethane matrix Type de document : texte imprimé Auteurs : AliReza Rahimi, Auteur ; Morgan Murphy, Auteur ; Kinza Faiyaz, Auteur ; Shane J. Stafslien, Auteur ; Lyndsi J. Vander Wall, Auteur ; Madhura Pade, Auteur ; John A. Finlay, Auteur ; Anthony S. Clare, Auteur ; Dean C. Webster, Auteur Année de publication : 2022 Article en page(s) : p. 795-812 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation Carbamate de glycidyle Copolymère silicone-uréthane Epoxydes Essais (technologie) Formulation (Génie chimique) Revêtements antisalissures Revêtements autostratifiants Revêtements organiques Salissures biologiques Statistique Index. décimale : 667.9 Revêtements et enduits Résumé : Marine coatings protect submerged surfaces from the negative effects of biofouling. In this work, we demonstrate a new method to prepare self-stratified, amphiphilic glycidyl-carbamate (GC)-based (epoxy urethane-based) coatings (AmpSiGC coatings) that have fouling-release properties making them suitable for marine use. The prepared coating systems are unique and durable in character as the bulk coating takes advantage of both epoxy and urethane functionalities while the surface is comprised of both hydrophilic and hydrophobic domains, granting it an amphiphilic characteristic. The experimental approach aimed to evaluate several factors that influence coating performance, including molecular weight of poly (ethylene glycol) (PEG) and PDMS moieties, ratio of hydrophobic (PDMS) and hydrophilic (PEG) components in the system, and the effect of different curing agents. The results demonstrated that polymeric chains of 10,000 Mn PDMS and 750 Mn PEG at 10–15 wt.% each offer substantially improved or comparable fouling-release performance in comparison to commercial marine coatings. This paper reports on the facile synthesis and characterization of the GC resin and GC prepolymers using FTIR and epoxy titrations ; surface characterization of the coatings using ATR-FTIR, XPS, and AFM; and fouling-release assessment of the surfaces using laboratory biological assays with the barnacle Amphibalanus amphitrite, the algae Ulva linza and Navicula incerta, and the bacteria Cellulophaga lytica. Several of the AmpSiGC coatings exhibited promising performance, which were better or comparable to the internal and commercial reference coatings. The performance of the systems was dependent on all of the factors considered in this study. Note de contenu : - Materials - Design of experiments - Synthesis of glycidyl-carbamate resin - Synthesis of amphiphilic glycidyl-carbamate prepolymers - Epoxy equivalent weight titrations - Percent solids determination - Fourier transform infrared spectroscopy - Coating formulation and curing - Surface characterization - Biological laboratory assays - Statistical analysis - Table 1 : Coating compositions - Table 2 : Epoxy equivalent weight for GC resin and some prepolymers DOI : https://doi.org/10.1007/s11998-021-00561-2 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00561-2.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38072 [article]

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Amphiphilically modified self-stratified siloxane-glycidyl carbamate coatings for anti-icing applications / AliReza Rahimi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 1 (01/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 1 (01/2021) . - p. 83-97 Titre : Amphiphilically modified self-stratified siloxane-glycidyl carbamate coatings for anti-icing applications Type de document : texte imprimé Auteurs : AliReza Rahimi, Auteur ; Morgan Murphy, Auteur ; Vinod Upadhyay, Auteur ; Kinza Faiyaz, Auteur ; Dante Battocchi, Auteur ; Dean C. Webster, Auteur Année de publication : 2021 Article en page(s) : p. 83-97 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation Carbamate de glycidyle Epoxydes Polydiméthylsiloxane Le polydiméthylsiloxane —[O-Si(CH3)2]n—, ou poly(diméthylsiloxane) selon la nomenclature systématique, communément appelé PDMS ou diméthicone, est un polymère organominéral de la famille des siloxanes souvent présent dans les shampoings. On l'y ajoute pour augmenter le volume des cheveux mais il peut également aller boucher les pores du cuir chevelu et rendre les cheveux gras. C'est une des raisons pour lesquelles se laver les cheveux tous les jours est très déconseillé avec un shampooing contenant des silicones. Il existe également de l'amodiméthicone, qui est un dérivé du diméthicone. Le polydiméthylsiloxane est un additif alimentaire (E900), utilisé comme antimoussant dans les boissons (Coca-Cola BlāK). La chaîne de poly(diméthylsiloxane) forme également la structure de base des huiles et des caoutchoucs silicones. Polyéthylène glycol Polymères amphiphiles Polyuréthanes Revêtements antigel Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : Icephobic coatings have applications in many industries to protect surfaces from deterioration and avoid catastrophic incidents. In this work, we report a new strategy to prepare amphiphilic siloxane-glycidyl carbamate coatings (AmpSiGC) coatings with anti-icing property. Polydimethyl siloxane (PDMS) and poly(ethylene glycol) (PEG) provided amphiphilicity for the AmpSiGC coatings. The designed experiment considered several factors: molecular weight of the surface-modifying polymers and their amount in the coating system. Although amphiphilic coatings have demonstrated promising results as marine coatings, investigations on their icephobic applications have been limited. This work discusses three aspects of the developed AmpSiGC systems: (1) preparation of the incorporated ingredients and their characterization by Fourier transform infrared spectroscopy (FTIR); (2) surface characterization of coatings via ATR (attenuated total reflectance)-FTIR, X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM); and (3) ice-adhesion, electrochemical impedance spectroscopy (EIS), and mechanical property evaluations. Overall, the surface analysis indicated the presence of both hydrophobic and hydrophilic domains and most of the coatings demonstrated promising performance for anti-icing applications with desirable barrier and mechanical properties in comparison to controls. Note de contenu : - EXPERIMENTAL : Design of experiments - Materials - Synthesis of glycidyl carbamate resin - Epoxy equivalent weight titrations - Percent solids determination - Fourier transform infrared spectroscopy - Coating formulaton & curing - Icephobic characterization - Statistical analysis - Surface characterization - Water absorption and barrier performance - Mechanical tests - RESULTS AND DISCUSSION : GC resin and prepolymers - Contact angle - Ice adhesion - XPS - ATR-FTIR - AFM images - Water absorption and barrier properties - Mechanical properties - Table 1 : Coating compositions - Table 2 : Epoxy equivalent weight for GC resin and some prepolymers DOI : https://doi.org/10.1007/s11998-020-00402-8 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00402-8.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35353 [article]

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An improved laboratory reattachment method for the rapid assessment of adult barnacle adhesion strength to fouling-release marine coatings / Shane J. Stafslien in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 6 (11/2012)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 9, N° 6 (11/2012) . - p. 651-665 Titre : An improved laboratory reattachment method for the rapid assessment of adult barnacle adhesion strength to fouling-release marine coatings Type de document : texte imprimé Auteurs : Shane J. Stafslien, Auteur ; Justin W. Daniels, Auteur ; James A. Bahr, Auteur ; Bret J. Chisholm, Auteur ; Abdullah Ekin, Auteur ; Dean C. Webster, Auteur ; Beatriz Orihuela, Auteur ; Daniel Rittschof, Auteur Année de publication : 2012 Article en page(s) : p. 651-665 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion Crustacés Marines (peinture) Revêtements antisalissures:Peinture antisalissures Test d'immersion Index. décimale : 667.9 Revêtements et enduits Résumé : Modifications have been made to the previously described adult barnacle laboratory reattachment method to enhance and improve the overall utility of this technique for rapidly assessing the efficacy of novel fouling-release marine coating technologies. These modifications include the use of an immobilization template to secure barnacles onto the coating surfaces during the underwater reattachment process, the development of a semi-automated push-off device to enable consistent and reproducible force gauge measurements and the implementation of a software tool to measure the diameter of barnacle base plates for adhesion strength calculations. A series of experimental siloxane–polyurethane and control coatings were evaluated with both the original and improved laboratory reattachment methodologies. Significantly higher adhesion strengths were obtained on these coatings using the improved reattachment method. Furthermore, only the improved reattachment method was able to discern significant differences in the performance of the siloxane–polyurethane coatings based on differences in compositional components. In this regard, the siloxane–polyurethane coatings containing the poly-caprolactone end groups attached to the poly(dimethylsiloxane) (PDMS) backbone exhibited significantly higher reattached barnacle adhesion strengths than the aminopropyl-terminated PDMS containing coatings. It was also shown that the utilization of barnacles with 5–6 mm base plate diameters, rather than 7–8 mm diameters, significantly enhanced the strength or tenacity of adhesion to the surface of the control coatings. The results of the improved laboratory reattachment evaluation of experimental siloxane–polyurethane and control coatings were in good agreement with barnacle adhesion measurements obtained for the same coatings with static ocean immersion testing in the field. Note de contenu : - EXPERIMENTAL : Coating preparation - Rearing and maintenance of adult barnacles - Reattachment procedure - Measurement of barnacle adhesion in shear - Static ocean immersion testing - Statistical analysis - RESULTS :Original vs improved laboratory reattachment method - Effect of barnacle basal diameter - Static ocean immersion testing DOI : 10.1007/s11998-012-9409-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-012-9409-7.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16648 [article]

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Automated parallel polyurethane dispersion synthesis and characterization / Mohammed J. Nasrullah in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 1 (03/2009)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 1 (03/2009) . - p. 1-10 Titre : Automated parallel polyurethane dispersion synthesis and characterization Type de document : texte imprimé Auteurs : Mohammed J. Nasrullah, Auteur ; Peter Schmitt, Auteur ; Richard R. Roesler, Artiste ; Dean C. Webster, Auteur ; Christy Gallagher-Lein, Auteur ; James A. Bahr, Auteur Année de publication : 2009 Article en page(s) : p. 1-10 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation Dispersions et suspensions Polymères -- Synthèse Polyuréthanes Solutions aqueuses (chimie) Index. décimale : 667.9 Revêtements et enduits Résumé : The synthesis of waterborne polyurethane dispersions (PUDs) using an automated parallel reactor system was explored. Waterborne PUDs are an important class of polymer dispersion that can be used in many applications such as coatings for wood finishing, glass fiber sizing, adhesives, automotive topcoats, and other applications. Herein, we present the synthesis of aqueous PUDs using a Chemspeed Autoplant A100™ automated parallel reactor system. This is the first time a PUD has been synthesized using an automated parallel reactor system. The synthesis involves the formation of an isocyanate-terminated prepolymer followed by neutralization, dispersion in water, and chain extension. Details of the methodology are discussed with respect to the process of writing the program for the synthesis to synthesizing the PUD itself with the Chemspeed. It is demonstrated that an aqueous PUD can be synthesized with an automated parallel process and the unit-to-unit results are similar. Process variables such as agitator design, rate of neutralization, and rate of water dispersion are varied as these are the three major factors which lead to the desired end product property. The controlled addition of neutralizer, water, and chain extender is an added advantage with this automated technique and gave consistent results in all the units. The PUDs were characterized for their particle size, viscosity, and percent solids. DOI : 10.1007/s11998-008-9102-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9102-z.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4840 [article]

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Bio-based succinic acid polyester polyols / William D. Coggio in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 22, N° 6 (06/2015)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 22, N° 6 (06/2015) . - p. 36-42 Titre : Bio-based succinic acid polyester polyols : Sustainable building blocks provide multiple benefits for performance-driven TPU, PUDs and coatings Type de document : texte imprimé Auteurs : William D. Coggio, Auteur ; Ivan Hevus, Auteur ; Dean C. Webster, Auteur ; Alan Schrock, Auteur ; Baylen Thompson, Auteur ; Kenneth Ulrich, Auteur ; Natalie Dzadek, Auteur Année de publication : 2015 Article en page(s) : p. 36-42 Langues : Américain (ame) Catégories : Biomatériaux Colles:Adhésifs Composés organiques -- Synthèse Polyuréthanes Succinique, Acide L'acide succinique est un diacide carboxylique aliphatique, dénommé également acide butane-1,4-dioïque et de formule semi-développée HOOC–CH2–CH2–COOH. Il est présent dans tous les organismes vivants et intervient dans le métabolisme cellulaire, en particulier dans le métabolisme des lipides entre l'acide cétoglutarique et l'acide fumarique lors du cycle de Krebs dans la mitochondrie. Index. décimale : 668.3 Adhésifs et produits semblables Résumé : Bio-based succinic acid provides researchers and product developers a valuable and innovative sustainable platform chemical for differentiable, high-performance polyurethane (PU) materials. Bio-based succinic acid and its derivatives have demonstrated performance advantages in a variety of applications, including personal care products, non-phthalate plasticizers, and polymeric derivatives used in urethanes, polyesters, and alkyd resin technologies. Figure 1 shows a schematic of the various synthetic pathways by which succinic acid can be transformed to diesters, diols, and high-molecular-weight polyesters and polyester polyols. Along with succinic acid, key succinate derivatives include polyester polyols,1,4 butane diol (BDO) and tetrahydrofuran (THF). Note de contenu : - Yeast fermentation process and LCA - Sucinate polyester polyol - Succinate polyester polyols in PUD coatings - Flexible formulation En ligne : http://www.adhesivesmag.com/articles/93913-advancing-adhesives-bio-based-succini [...] Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24304 [article]

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Catalyzed crosslinking of highly functional biobased epoxy resins / Thomas J. Nelson in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 5 (09/2013)  

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Catalyzed non-isocyanate polyurethane (NIPU) coatings from bio-based poly(cyclic carbonates) / Arvin Z. Yu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 1 (01/2019)  

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Combinatorial approach to study the effect of acrylic polyol composition on the properties of crosslinked siloxane-polyurethane fouling-release coatings / Robert J. Pieper in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 4 (12/2007)  

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Combinatorial materials research applied to the Combinatorial materials research applied to the development of new surface coatings XII: Novel, environmentally friendly antimicrobial coatings derived from biocide-functional acrylic polyols and isocyanates / Alex J. Kugel in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 1 (03/2009)  

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Effect of composition on performance properties in cationic UV-curable coating systems / Heather A. Nash in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 1, N° 3 (07/2004)  

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Effect of polymer composition on performance properties of maleate-vinyl ether donor-accceptor UV-curable systems / Neena Ravindran in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 3, N° 3 (07/2006)  

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Effect of solvents on the curing and properties of fully bio-based thermosets for coatings / Songqi Ma in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 2 (03/2017)  

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Effects of pigmentation on siloxane-polyurethane coatings and their performance as fouling-release marine coatings / Stacy A. Sommer in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 6 (11/2011)  

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Fast-moving solutions / Bret J. Chisholm in EUROPEAN COATINGS JOURNAL (ECJ), N° 11/2008 (11/2008)  

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High throughput combinatorial characterization of thermosetting siloxane-urethane coatings having spontaneously formed microtopographical surfaces / Partha Majumdar in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 2 (06/2007)  

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High throughput workflow for the development of coatings / Dean C. Webster in COATINGS TECH, Vol. 1, N° 6 (06/2004)  

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Highly functional biobased polyols and their use in melamine–formaldehyde coatings / Thomas J. Nelson in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 6 (11/2013)  

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Linear glycidyl carbamate (GC) resins for highly flexible coatings / Umesh D. Harkal in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 2 (03/2013)  

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Monomer-grafted sucrose ester resins / Thomas J. Nelson in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 4 (07/2013)  

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Novel polyurethane coating technology through glycidyl carbamate chemistry / Peter A. Edwards in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 7 (07/2005)  

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