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JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH . Vol. 6, N° 1Mention de date : 03/2009Paru le : 20/04/2009 |
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Ajouter le résultat dans votre panierAutomated parallel polyurethane dispersion synthesis and characterization / Mohammed J. Nasrullah in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 1 (03/2009)
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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 : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4840 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011246 - Périodique Bibliothèque principale Documentaires Disponible 011271 - Périodique Bibliothèque principale Documentaires Disponible Synthesis and evaluation of functional polymeric additives with urethane linkage as dispersing agents for preparation of pigment concentrates with high solid loading, low-VOC content, and usefulness for industrial coatings / Nandhibatla V. Sastry in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 1 (03/2009)
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inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 1 (03/2009) . - p. 11-25
Titre : Synthesis and evaluation of functional polymeric additives with urethane linkage as dispersing agents for preparation of pigment concentrates with high solid loading, low-VOC content, and usefulness for industrial coatings Type de document : texte imprimé Auteurs : Nandhibatla V. Sastry, Auteur ; Rakesh R. Thakor, Auteur Année de publication : 2009 Article en page(s) : p. 11-25 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Colorants
Composés organiques volatils
Dispersions et suspensions
Pigments
Polymères
RevêtementsIndex. décimale : 667.9 Revêtements et enduits Résumé : A synthetic strategy based on precursor and prepolymer approaches has been adopted for preparing the functional polymeric agents with urethane linkage and functional groups such as –CONH–, –COOH, –NH–, C–N, –COOR and C–Cl, that can interact with the pigment surfaces. The agents were tested for their dispersion capacity. High pigment-loaded (as high as 64%) and solvent-free stainers with potential applications in low-VOC paints were successfully prepared. The stainers were mixed with two commercial binder resins—namely epoxy base white and polyurethane metal coat binder resins—to get first paints and their coats on various substrates such as standard glaze paper, tin and mild steel panels. The paint-specific properties, viz. percentage opacity, color strength, solvent resistance, adhesion, scratch hardness and salt spray resistance, were measured to adjudge the suitability of high pigment-loaded coats in industrial applications. The properties measured in general showed improvement in spite of the increase in the pigment loading. The paint coats resisted not only the xylene, petrol, and lubricating oil attack but also humidity and salt spray (up to 1000 h of exposure). DOI : 10.1007/s11998-008-9119-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9119-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4841 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011246 - Périodique Bibliothèque principale Documentaires Disponible 011271 - Périodique Bibliothèque principale Documentaires Disponible Control of functional site location for thermosetting latexes / Mark D. Soucek in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 1 (03/2009)
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inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 1 (03/2009) . - p. 27-36
Titre : Control of functional site location for thermosetting latexes Type de document : texte imprimé Auteurs : Mark D. Soucek, Auteur ; E. Pedraza, Auteur Année de publication : 2009 Article en page(s) : p. 27-36 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aminoplastes
Copolymère acrylique mélamine
Latex
Rhéologie
Thermodurcissables
ViscoélasticitéIndex. décimale : 667.9 Revêtements et enduits Résumé : The location of hydroxyl functionality was investigated for thermosetting acrylic latexes. Large and small latex particles with and without hydroxyl functionality were also synthesized and characterized. Large and small latex particles with and without hydroxyl functionality were blended together, and the latexes were crosslinked. The location of hydroxyl groups in the small or large latex particles had an effect upon the thermomechanical properties and hence on the ultimate performance of the crosslinked latexes. The packing of the large and small latexes was dependent on small-to-large particle ratio, and in addition had an effect upon the speed of film formation. The higher concentration of hydroxyl groups in the small latex particles contributed more to the tensile properties of the latexes than the functionality of the large particles. DOI : 10.1007/s11998-008-9099-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9099-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4842 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011246 - Périodique Bibliothèque principale Documentaires Disponible 011271 - Périodique Bibliothèque principale Documentaires Disponible Hydrogen bonding effects on aspartate ester reactions in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 1 (03/2009)
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inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 1 (03/2009)
Titre : Hydrogen bonding effects on aspartate ester reactions Type de document : texte imprimé Année de publication : 2009 Langues : Américain (ame) Catégories : Esters
Hydrogène
Isocyanates
Liaisons hydrogène
Polyaspartate
Polyuréthanes
Revêtements:PeintureIndex. décimale : 667.9 Revêtements et enduits DOI : 10.1007/s11998-008-9139-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9139-z.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4843 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011246 - Périodique Bibliothèque principale Documentaires Disponible 011271 - Périodique Bibliothèque principale Documentaires Disponible Investigation of the effect of precoalescence or postcoalescence crosslinking on film formation, properties, and latex morphology / Ravi G. Joshi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 1 (03/2009)
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inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 1 (03/2009)
Titre : Investigation of the effect of precoalescence or postcoalescence crosslinking on film formation, properties, and latex morphology Type de document : texte imprimé Auteurs : Ravi G. Joshi, Auteur ; Frank N. Jones, Auteur ; Weidian C. Shen, Auteur ; Wenjing Mao, Auteur ; Paul D. Ziemer, Auteur ; Theodore Provder, Auteur Année de publication : 2009 Note générale : Erratum in Journal of coating technology and research Vol. 7, N° 4, p. 529-530 - Bibliogr. Langues : Américain (ame) Catégories : Coalescence (Sciences physiques)
Contraintes (mécanique)
Formation de film
Indentation des matériaux
Latex
Morphologie (matériaux)
Réticulation (polymérisation)
Revêtements:PeintureIndex. décimale : 667.9 Revêtements et enduits Résumé : Latexes have many product applications including functioning as a binder in coatings. For many years, coatings researchers in industry as well as in academe have been exploring various modes of crosslinking latexes. Quite often, the goal of preparing crosslinked latexes is to upgrade film properties relative to the film properties of uncrosslinked latexes. In the present report, the synthesis and properties of crosslinkable acrylic latexes prepared with either an internal crosslinker (1,3-butylene glycol dimethacrylate)—"precoalescence crosslinking"—or an external crosslinker (adipic dihydrazide)—"postcoalescence crosslinking"—at various levels of crosslinking were studied. For postcoalescence crosslinking, diacetone acrylamide was copolymerized into the latex to provide sites for subsequent reaction with adipic dihydrazide. Fundamental properties of films cast from the two types of latexes were systematically compared. These properties included gel content, dynamic mechanical properties, nano-indenter hardness and modulus, stress–strain properties as well as the characterization of latex morphology by atomic force microscopy (AFM). In addition, some specific end-use properties were determined. This study assesses the effect of type (precoalescence or postcoalescence) and level of crosslinking on the film formation process and the resulting fundamental and end-use properties as well as resulting latex film morphology. DOI : 10.1007/s11998-008-9115-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9115-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4859 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011246 - Périodique Bibliothèque principale Documentaires Disponible 011271 - Périodique Bibliothèque principale Documentaires Disponible Multiscale physical characterization of an outdoor-exposed polymeric coating system / Xiaohong Gu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 1 (03/2009)
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inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 1 (03/2009) . - p. 67-79
Titre : Multiscale physical characterization of an outdoor-exposed polymeric coating system Type de document : texte imprimé Auteurs : Xiaohong Gu, Auteur ; Li-Piin Sung, Auteur ; Bouchra Kidah, Auteur ; Mounina Oudina, Auteur ; Cyril Clerici, Auteur ; Hu Haiqing, Auteur ; Debbie Stanley, Auteur ; Walter E. Byrd, Auteur ; Jerry Y. C. Jean, Auteur ; Tinh Nguyen, Auteur ; Jonathan W. Martin, Auteur Année de publication : 2009 Article en page(s) : p. 67-79 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse multiéchelle
Brillance (optique)
Caractérisation
Dispersion rotatoire (optique)
Microscopie à force atomique
Microscopie confocale
Morphologie (matériaux)
Optique
Revêtements protecteurs
RugositéIndex. décimale : 667.9 Revêtements et enduits Résumé : Surface topography and gloss are two related properties affecting the appearance of a polymeric coating system. Upon exposure to ultraviolet (UV) radiation, the surface topography of a coating becomes more pronounced and, correspondingly, its gloss generally decreases. However, the surface factors affecting gloss and appearance are difficult to ascertain. In this article, atomic force microscopy (AFM) and laser scanning confocal microscopy (LSCM) measurements have been performed on an amine-cured epoxy coating system exposed to outdoor environments in Gaithersburg, Maryland. The formation of the protuberances is observed at the early degradation stages, followed by the appearance of circular pits as exposure continues. At long exposure times, the circular features enlarge and deepen, resulting in a rough surface topography and crack formation. Fourier Transform Infrared Spectroscopy (FTIR) study indicates that the oxidation and chain scission reactions are likely the origins of the surface morphological changes. The relationship between changes in surface roughness and gloss has been analyzed. The root mean square (RMS) roughness of the coating is related to nanoscale and microscale morphological changes in the surface of the coating as well as to the gloss retention. A near-linear dependence of RMS roughness with the measurement length scale (L) is found on a double logarithmic scale, i.e., RMS ~ L f. The scaling factor, f, decreases with exposure time. The relationship between surface topography, on nano- to microscales, and the macroscale optical properties such as gloss retention is discussed. Moreover, a recent development in using an angle-resolved light scattering technique for the measurement of the specular and off-specular reflectance of the UV-exposed specimens is also demonstrated, and the optical scattering data are compared to the gloss and the roughness results. DOI : 10.1007/s11998-008-9108-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9108-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4860 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011246 - Périodique Bibliothèque principale Documentaires Disponible 011271 - Périodique Bibliothèque principale Documentaires Disponible Hindered amine light stabilizers in pigmented coatings / Christian Schaller in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 1 (03/2009)
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inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 1 (03/2009) . - p. 81-88
Titre : Hindered amine light stabilizers in pigmented coatings Type de document : texte imprimé Auteurs : Christian Schaller, Auteur ; Adalberg Braig, Auteur ; Daniel Rogez, Auteur Année de publication : 2009 Article en page(s) : p. 81-88 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Amines Une amine est un composé organique dérivé de l'ammoniac dont certains hydrogènes ont été remplacés par un groupement carboné. Si l'un des carbones liés à l'atome d'azote fait partie d'un groupement carbonyle, la molécule appartient à la famille des amides. Découvertes en 1849, par Wurtz les amines furent initialement appelées alcaloïdes artificiels.
On parle d'amine primaire, secondaire ou tertiaire selon que l'on a un, deux ou trois hydrogènes substitués.
Par exemple, la triméthylamine est une amine tertiaire, de formule N(CH3)3.
Typiquement, les amines sont obtenues par alkylation d'amines de rang inférieur. En alkylant l'ammoniac, on obtient des amines primaires, qui peuvent être alkylées en amines secondaires puis amines tertiaires. L'alkylation de ces dernières permet d'obtenir des sels d'ammonium quaternaire.
D'autre méthodes existent : 1. Les amines primaires peuvent être obtenues par réduction d'un groupement azoture, 2. Les amines peuvent aussi être obtenues par la réduction d'un amide, à l'aide d'un hydrure, 3. L'amination réductrice permet l'obtention d'amines substituées à partir de composés carbonylés (aldéhydes ou cétones), 4. Les amines primaires peuvent être obtenues par la réaction de Gabriel.
Dioxyde de titane
Photoabsorption
Revêtements:Peinture
Stabilisants (chimie)Tags : UV stabilization Coating absorbers (UVA) Hindered amine light stabilizers (HALS) Pigmented coatings Titanium dioxide Index. décimale : 667.9 Revêtements et enduits Résumé : It is common practice to combine hindered amine light stabilizers (HALS) with UV absorbers (UVA) for optimal protection of coatings and plastics. The ratio of UVA and HALS strongly depends on the concentration of pigments (acting as UVA) used in the paint; that is, a clearcoatings require higher amounts of UVA, whereas opaque pigmented coatings require higher amounts of HALS. Here, especially basic HALS types can interfere with paint components like, for example, pigments due to acid/base interactions. In this article, we want to discuss the influence of HALS basicity on long-term performance in opaque white pigmented solventborne (SB) and waterborne (WB) coatings for industrial applications in correlation to the quality of the used TiO2. DOI : 10.1007/s11998-008-9130-8 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9130-8.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4861 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011246 - Périodique Bibliothèque principale Documentaires Disponible 011271 - Périodique Bibliothèque principale Documentaires Disponible Theoretical study of the scattering efficiency of rutile titanium dioxide pigments as a function of their spatial dispersion / Jean-Claude Auger in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 1 (03/2009)
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inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 1 (03/2009) . - p. 89-97
Titre : Theoretical study of the scattering efficiency of rutile titanium dioxide pigments as a function of their spatial dispersion Type de document : texte imprimé Auteurs : Jean-Claude Auger, Auteur ; Brian Stout, Auteur ; Vincent Arnaud Martinez, Auteur Année de publication : 2009 Article en page(s) : p. 89-97 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Dioxyde de titane
Dispersions et suspensions
Pigments -- Propriétés optiques
RevêtementsTags : Optical property Opacity Rutile titanium dioxide pigment Dependent scattering Multiple Spatial dispersion T-matrix formalism Index. décimale : 667.9 Revêtements et enduits Résumé : We propose an original theoretical framework to model the scattering efficiency of white paint films as a function of the volume fraction and spatial state of dispersion of rutile titanium dioxide pigments, taking into account electromagnetic couplings. Numerical calculations are performed using a multiple T matrix formalism on an “elemental” volume extracted from the bulk of the paint and which we model as pigments and fillers in a polymer matrix. Qualitative studies show that, due to the dependent scattering phenomenon, the size of fillers can modulate the magnitude of loss in scattering efficiency by modifying the spatial state of dispersion of the pigments in the polymer matrix. In particular, fillers whose size is comparable to the dimension of the pigments improve the scattering efficiency by impeding crowding. It is also shown that the optical properties of the bulk material at arbitrary concentration can be approximated by extrapolating the optical properties calculated on a limited number of scatterers. DOI : 10.1007/s11998-008-9116-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9116-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4877 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011246 - Périodique Bibliothèque principale Documentaires Disponible 011271 - Périodique Bibliothèque principale Documentaires Disponible The effect of slip agents on the characteristics and properties of epoxy-phenolic can coatings / Chao Jiang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 1 (03/2009)
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inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 1 (03/2009) . - p. 99-106
Titre : The effect of slip agents on the characteristics and properties of epoxy-phenolic can coatings Type de document : texte imprimé Auteurs : Chao Jiang, Auteur ; Peter K. T. Oldring, Auteur ; Laurence Castle, Auteur ; Paul Cooke, Auteur ; James Thomas Guthrie, Auteur Année de publication : 2009 Article en page(s) : p. 99-106 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Abrasion
Epoxydes
Mouillage (chimie des surfaces)
Phénoplastes
Revêtements -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : The migration issues associated with the transfer of chemicals from epoxy-based can coatings into foodstuffs have been studied in recent years. Slip agents are usually used in can coatings for ease of manufacture and to provide required physical resistance properties. Slip agents in epoxy-based can coatings are suspected of not only performing as lubricants but also having effects on the other properties of coatings, including their migration resistance. This article contains information relating to the evaluation of the influence of selected slip agents on the characteristics and properties of specific epoxy-phenolic can coatings. These characteristics and properties include those thermal properties of the coatings that relate to curing characteristics, the surface appearance of cured coating films, the wetting properties that may be associated with migration issues, and the abrasion properties of the cured epoxy-phenolic systems. It was found that three selected slip agents each affected the properties of the specific epoxy-phenolic can coating differently. One of three selected slip agents in particular reduced the interaction (“wettability”) of the specific coatings by test fluids and so may help to reduce chemical migration. DOI : 10.1007/s11998-008-9114-8 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9114-8.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4878 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011246 - Périodique Bibliothèque principale Documentaires Disponible 011271 - Périodique Bibliothèque principale Documentaires Disponible 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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inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 1 (03/2009) . - p. 107-121
Titre : 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 Type de document : texte imprimé Auteurs : Alex J. Kugel, Auteur ; James A. Bahr, Auteur ; Dean C. Webster, Auteur ; Robert J. Pieper, Auteur ; Shane J. Stafslien, Auteur ; Michael J. Jepperson, Auteur ; Scott M. Ebert, Auteur ; Lyndsi J. Vander Wall, Auteur ; Justin W. Daniels, Auteur ; Laura E. Jarabek, Auteur ; Bret J. Chisholm, Auteur Année de publication : 2009 Article en page(s) : p. 107-121 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antimicrobiens
Revêtements
Staphylocoques
TriclosanLe triclosan est un composé organochloré, proche des chlorophénols, qui possède des propriétés antifongiques et antibactériennes à large spectre. Il est aussi appelé 5-chloro-2-(2,4-dichlorophénoxy)phénol.
UrethanesIndex. décimale : 667.9 Revêtements et enduits Résumé : Novel, environmentally friendly antimicrobial coatings containing tethered biocide moieties derived from the ubiquitous biocide, triclosan, were synthesized and characterized using a high-throughput workflow. Triclosan was first modified with an acrylate functionality and, subsequently, copolymerized with hydroxyethyl acrylate and butyl acrylate using conventional free radical polymerization to form an array of acrylic polyol terpolymers. The polyols were characterized using nuclear magnetic resonance spectroscopy, differential scanning calorimetry, and gel permeation chromatography. Arrays of urethane coatings were produced from the array of acrylic polyol terpolymers and, subsequently, characterized using parallel dynamic mechanical thermal analysis, surface energy measurements, and various biological assays. The results of the biological assays showed that the coatings were effective toward inhibiting Staphylococcus epidermidis biofilm retention without leaching triclosan or other toxic components from the coating. The level of antimicrobial activity was found to increase with the content of triclosan moieties incorporated into the coating matrix. These results indicate that triclosan moieties tethered to a polymer matrix can impart antimicrobial properties via a contact-active, nonleaching (i.e., environmentally friendly) mechanism. Since S. epidermidis is one of the primary microorganisms associated with infection and failure of implanted medical devices, such as prosthetic heart valves, urinary catheters, and a variety of orthopedic implants, these coatings may have good potential for commercialization in some of these applications. DOI : 10.1007/s11998-008-9124-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9124-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4879 [article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011246 - Périodique Bibliothèque principale Documentaires Disponible 011271 - Périodique Bibliothèque principale Documentaires Disponible Intelligent polymeric surfaces through molecular self-assembly / Achin Goel in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 1 (03/2009)
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inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 1 (03/2009) . - p. 123-133
Titre : Intelligent polymeric surfaces through molecular self-assembly Type de document : texte imprimé Auteurs : Achin Goel, Auteur ; Ravi G. Joshi, Auteur ; Vijay M. Mannari, Auteur Année de publication : 2009 Article en page(s) : p. 123-133 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Angle de contact
Hydrophobie
Marines (peinture)
Matériaux intelligents
Microscopie à sonde à balayage
Polymères amphiphiles
Polymères ramifiés
Polyuréthanes
Revêtements:Peinture
Systèmes moléculaires organisésIndex. décimale : 667.9 Revêtements et enduits Résumé : Recently, stimuli-responsive surfaces have gained considerable interest among coatings researchers in industry as well as in academe. To date, many switchable surfaces based on such external stimuli as temperature, electricity, pH, and many others have been designed and developed. Environmentally switchable surfaces have been among the most widely studied surfaces since they are known to exhibit smart behavior under external influence. In the present work, we report the synthesis of hydrophobic, hydrophilic, and amphiphilic polyurethane coatings with tethered hydrophilic and/or hydrophobic moieties. These coatings have been characterized and tested for mechanical properties and surface characteristics using such advanced instruments as the scanning probe microscope (SPM), dynamic contact angle analyzer (DCA), adhesion tester, and nanoindenter. The surfaces with tethered hydrophobic or hydrophilic moieties, when immersed in water, showed remarkable changes in the surface topography, hence, their dynamic surface characteristics. The amphiphilic surfaces, containing both hydrophobic and hydrophilic moieties, showed intelligent behavior in response to the external environment. The ability to tailor surfaces with predictable behavior upon exposure to the external environment opens up enormous opportunities for their potential end-use applications. DOI : 10.1007/s11998-008-9125-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9125-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4880 [article]Réservation
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Code-barres | Cote | Support | Localisation | Section | Disponibilité |
---|---|---|---|---|---|
011246 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |
011271 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |