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Auteur Dean C. Webster
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North Dakota State University - Fargo, North Dakota - USA
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Novel tailor-made diols for polyurethane coatings using a combination of controlled radical polymerization, ring opening polymerization, and click chemistry / Ankit Vora in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 4 (07/2010)
[article]
Titre : Novel tailor-made diols for polyurethane coatings using a combination of controlled radical polymerization, ring opening polymerization, and click chemistry Type de document : texte imprimé Auteurs : Ankit Vora, Auteur ; Mohammed J. Nasrullah, Auteur ; Dean C. Webster, Auteur Année de publication : 2010 Article en page(s) : p. 409-417 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Chimie click
Polyaddition
Polymérisation
Polyuréthanes
Revêtements:PeintureIndex. décimale : 667.9 Revêtements et enduits Résumé : Novel dihydroxy functional 3-arm star polymers were synthesized using a combination of atom transfer radical polymerization, ring opening polymerization, and click chemistry. The diols were characterized using gel permeation chromatography, Fourier transform infrared spectroscopy, and 1H NMR spectroscopy. The diols were incorporated into polyurethane coatings, which were characterized using differential scanning calorimetry, thermogravimetric analysis, pendulum hardness, water contact angle, and methyl ethyl ketone double rubs. The coatings showed an increase in the water contact angle values as the percentage of the polystyrene-based diol was increased. Similarly, the coatings with the poly(tert-butyl acrylate)-based diols showed a decrease in the glass transition temperature values with an increase in the diol content. It is expected that the use of controlled radical polymerization would allow for the synthesis of novel tailor-made functional polymers to achieve tunable coatings properties. DOI : 10.1007/s11998-009-9210-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9210-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9763
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Code-barres Cote Support Localisation Section Disponibilité 012362 - Périodique Bibliothèque principale Documentaires Disponible Novel water-dispersible glycidyl carbamate (GC) resins and waterborne amine-cured coatings / Umesh D. Harkal in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 6 (11/2011)
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Titre : Novel water-dispersible glycidyl carbamate (GC) resins and waterborne amine-cured coatings Type de document : texte imprimé Auteurs : Umesh D. Harkal, Auteur ; Andrew J. Muehlberg, Auteur ; Peter A. Edwards, Auteur ; Dean C. Webster, Auteur Année de publication : 2011 Article en page(s) : p. 735-747 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Carbamate de glycidyle
Epoxydes
Hydrophilie
Monte-Carlo, Méthode de
Polyuréthanes
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Water-dispersible glycidyl carbamate (GC) functional resins were synthesized and crosslinked using a water-dispersible amine to form coatings. GC functional resins are synthesized by the reaction of an isocyanate functional compound with glycidol to yield a carbamate (urethane) linkage (–NHCO–) and reactive epoxy group. The combination of both functionalities in a single resin structure imparts excellent mechanical and chemical properties to the coatings. Previous studies on the development of GC coatings have focused on solvent-borne coating systems. In this study, GC resins were modified by incorporating nonionic hydrophilic groups to produce water-dispersible resins. To determine the influence of the content of hydrophilic groups on dispersion stability, aqueous dispersions were made from a series of hydrophilically modified GC resins and characterized for particle size and dispersion stability. The composition of a typical, dispersed GC resin particle was predicted using Monte Carlo simulations. Stable GC dispersions were used to prepare amine-cured coatings. The coatings were characterized for solvent resistance, water resistance, hardness, flexibility, adhesion, and surface morphology. It was observed that GC resins were able to be dispersed in water without using any surfactant and by minimal mixing force (hand mixing) and produced coating films with good properties when crosslinked with a compatible waterborne amine crosslinker. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of mPEG-modified GC resins - Characterization - Coating formulation preparation - Coating performance - Differential scanning colorimetry (DSC) - Thermogravimetric analysis (TGA) - Dynamic mechanical analysis (DMA) - Atomic force microscope (AFM) - Salt spray test
- RESULTS AND DISCUSSION : Synthesis of water-dispersible GC resins - Dispersion stability - Coating formulations - Water and solvent resistance - Water contact angle - Other coating properties - Further analysis of the coating properties - Thermal stability - Salt spray testDOI : 10.1007/s11998-011-9356-8 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-011-9356-8.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12600
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Code-barres Cote Support Localisation Section Disponibilité 13484 - Périodique Bibliothèque principale Documentaires Disponible Poly(ethylene) glycol-modified, amphiphilic, siloxane–polyurethane coatings and their performance as fouling-release surfaces / Teluka P. Galhenage in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 2 (03/2017)
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Titre : Poly(ethylene) glycol-modified, amphiphilic, siloxane–polyurethane coatings and their performance as fouling-release surfaces Type de document : texte imprimé Auteurs : Teluka P. Galhenage, Auteur ; Dean C. Webster, Auteur ; Augusto M. S. Moreira, Auteur ; Ryan J. Burgett, Auteur ; Shane J. Stafslien, Auteur ; Lyndsi J. Vander Wall, Auteur ; John A. Finlay, Auteur ; Sofia C. Franco, Auteur ; Anthony S. Clare, Auteur Année de publication : 2017 Article en page(s) : p. 307-322 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Copolymère silicone-uréthane
Formulation (Génie chimique)
Marines (peinture)
Polyéthylène glycol
Polyisocyanates
Polymères -- Synthèse
Polymères amphiphiles
PrépolymèresUn pré-polymère ou prépolymère est un oligomère ou un polymère présentant des groupes réactifs qui lui permettent de participer à une polymérisation ultérieure et d’incorporer ainsi plusieurs unités monomères dans au moins une chaîne de la macromolécule finale.
Les pré-polymères peuvent être di-fonctionnels (c'est le cas des pré-polymères téléchéliques) ou plurifonctionnels. Dans ce dernier cas, ils sont utilisés pour la fabrication de polymères thermodurcissables par réticulation.
Revêtements antisalissures:Peinture antisalissures
Surfaces -- AnalyseIndex. décimale : 667.9 Revêtements et enduits Résumé : Amphiphilic siloxane–polyurethane (AmSiPU) coatings were prepared using a series of polyisocyanate prepolymers modified with polydimethyl siloxane (PDMS) and poly(ethylene glycol) (PEG). Fouling-release performance of the AmSiPU coatings was evaluated through laboratory biological assays using several representative marine organisms. First, polyisocyanate prepolymers with compositional variation in PDMS and PEG were synthesized and characterized using Fourier transform infrared spectroscopy (FTIR) and isocyanate titrations. Then, the prepolymers were incorporated into coatings. Surface wettability of the coatings was evaluated using contact angle and surface energy measurements. Coatings’ surfaces were also characterized using attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM). ATR-FTIR and XPS experiments revealed that both PDMS and PEG moieties were present on the surface suggesting amphiphilic character. AFM phase images show microphase separation. AmSiPU coatings show excellent fouling-release performance toward bacteria (Cellulophaga lytica), the diatoms (Navicula incerta), and the green algae (Ulva linza), demonstrating comparable or superior performance to many commercial amphiphilic fouling-release coatings. Despite the incorporation of hydrophilic PEG, AmSiPU coatings show good macrofouling release which is often challenging with amphiphilic coating systems. AmSiPU coatings are a nontoxic and tough fouling-release solution with comparable performance to benchmarks in the fouling-release coatings market. Note de contenu : - Materials
- Synthesis of prepolymers
- Isocyanate titrations
- Instrumentation
- Coating formulation and curing
- Control and standard coatings
- Water aging
- Biological laboratory
- Surface characterizationDOI : 10.1007/s11998-016-9862-9 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9862-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28147
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Code-barres Cote Support Localisation Section Disponibilité 18781 - Périodique Bibliothèque principale Documentaires Disponible Preliminary investigation of the impact of polymer composition on electrochemical properties of coatings as determined by electrochemical impedance spectroscopy / Vinod Upadhyay in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 6 (11/2013)
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Titre : Preliminary investigation of the impact of polymer composition on electrochemical properties of coatings as determined by electrochemical impedance spectroscopy Type de document : texte imprimé Auteurs : Vinod Upadhyay, Auteur ; Umesh D. Harkal, Auteur ; Dean C. Webster, Auteur ; Gordon P. Bierwagen, Auteur Année de publication : 2013 Article en page(s) : p. 865-878 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Carbamate de glycidyle
Matériaux -- Propriétés fonctionnelles
Polymères
Relations structure-propriétés
Revêtements:Peinture
Spectroscopie d'impédance électrochimiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : The influence of structural and systematic compositional variations in glycidyl carbamate (GC) functional polymers on the electrochemical properties of their coatings was studied. There are few reports which focus on the correlation of structural and compositional variations in polymer films with their electrochemical barrier properties, diffusion properties with regards to water and aqueous electrolytes, and corrosion performance. To begin to fill this knowledge gap, two sets of GC functional polymers were studied. The polymer compositions were designed to vary the extent of polar hydrophilic groups, non-polar hydrophobic groups, and reactive epoxy groups in the final coatings. Impedance responses of the coatings were found to be closely related to the structural and compositional variations of these GC polymer films. In addition, single frequency EIS experiments were used in an attempt to understand the water uptake behavior of these polymer films using NaCl solution and ionic liquid under immersed condition. The resulting transport property data of the films was correlated to their polymer structure and composition. Moreover, a novel attempt at ranking the stability of coating using capacitance measurement during a cyclic wetting–drying condition was also attempted. The information obtained from this work can potentially be used to optimize the polymer for the specific performance properties needed in the protective coating applications, saving significant time and effort in the research and development stage. Note de contenu : - EXPERIMENTAL : M series GC resins - Coating preparation and film formation - Electrochemical impedance spectroscopy
- RESULTS AND DISCUSSION : M series GC coatings : electrochemical characterization - Coating stability characterization by single frequency EIS - L series GC coatings : electrochemical characterization - Coating stability characterization by cyclic wetting-drying single frequency EIS capaticance measurementDOI : 10.1007/s11998-013-9497-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-013-9497-z.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19826
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Code-barres Cote Support Localisation Section Disponibilité 15744 - Périodique Bibliothèque principale Documentaires Disponible Radical change in research and development : The shift from conventional methods to high throughout methods / Dean C. Webster in COATINGS TECH, Vol. 2, N° 15 (04/2005)
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Titre : Radical change in research and development : The shift from conventional methods to high throughout methods Type de document : texte imprimé Auteurs : Dean C. Webster, Auteur Année de publication : 2005 Article en page(s) : p. 24-29 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 667.9 Revêtements et enduits Résumé : High throughput methodology is a radical change in how experiments are carried out and can revolutionize how laboratories operate in the future. As these methods become more widespread, organizations that do not adopt high throughput methods will be at a significant disadvantage. Simple steps can be taken to begin moving toward high throughput methods now. A number of automated methods have been described in the literature and many additional methods for sample preparation, characterization, and screening continue to be developed. In the future it is expected that these methods and systems will be as commonplace and indispensable to the process of coatings and material development as the personal computer is today. En ligne : https://drive.google.com/file/d/1IS4df59OcaYQOMS7fN5Rtsw9TZWHdMko/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5513
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Code-barres Cote Support Localisation Section Disponibilité 001484 - Périodique Bibliothèque principale Documentaires Disponible A small-scale waterjet test method for screening novel foul-release coatings / Chin-Sing Lim in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 3 (05/2015)
PermalinkSoy-based UV-curable thiol–ene coatings / Zhigang Chen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 5 (09/2010)
PermalinkSynthesis, formulation, and characterization of siloxane-polyurethane coatings for underwater marine applications using combinatorial high-throughput experimentation / Abdullah Ekin in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 4 (12/2007)
PermalinkThe development of coatings using combinatorial/high throughput methods : a review of the current status / Bret J. Chisholm in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 1 (03/2007)
PermalinkThe 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)
PermalinkThe influence of structural modification and composition of glycidyl carbamate resins on their viscosity and coating performance / Umesh D. Harkal in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 5 (09/2010)
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