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Preparation and evaluation of a UV-curing hydrophilic semi-IPN coating for medical guidewires / Wenfei Ding in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 4 (07/2021)
[article]
Titre : Preparation and evaluation of a UV-curing hydrophilic semi-IPN coating for medical guidewires Type de document : texte imprimé Auteurs : Wenfei Ding, Auteur ; Zheng Zhao, Auteur ; Lingmei Jiang, Auteur ; Xigao Jian, Auteur ; Yuan Song, Auteur ; Jinyan Wang, Auteur Année de publication : 2021 Article en page(s) : p. 1027–1035 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Biocompatibilité
Caractérisation
Copolymère uréthane acrylate
Copolymères -- Synthèse
Durée de vie (Ingénierie)
Enrobage (technologie)
Essais (technologie)
Hydrophilie
Morphologie (matériaux)
Mouillabilité
Mouillage (chimie des surfaces)
Oligomères
Photoréticulation
Polyéthylene glycol diacrylate
Polyvinylpyrrolidone
Réseaux polymères
Revêtements -- Séchage sous rayonnement ultraviolet
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Guidewires have crucial roles in intravascular, critical care, and urological applications. In recent years, the demand for guidewires with lower friction surfaces has arisen for medical applications. Among various surface lubrication strategies for guidewires, the most promising is the use of a hydrophilic coating. However, obtaining a hydrophilic coating on guidewires with strong adhesion remains difficult owing to the surface energy difference between the substrate and hydrophilic coating. Herein, we present a UV-curing semi-interpenetrating polymer network coating for medical thermoplastic polyurethane (TPU)-sheathed nitinol guidewires. A polyurethane acrylate (PUA) was synthesized and cured as a transition layer on the TPU substrate to provide strong adhesion. Then, polyvinyl pyrrolidone (PVP) and polyethylene glycol diacrylate (PEGDA) permeated into the PUA layer and cured to form the composite coating. The PUA–PEGDA–PVP coating exhibited excellent lubricity and satisfactory adhesion force. The surface coefficient of friction decreased to approximately 0.02 after modification with the coating, and the coating was stable during long-term soaking in water and repeated friction. In vitro toxicity tests revealed that the coating had good biocompatibility. Thus, our PUA–PEGDA–PVP coating has the potential for application as super-lubricity guidewires and other medical devices. Note de contenu : - EXPERIMENTAL MATERIALS AND METHODS : Materials - Synthesis of PUA oligomer - Preparation of prepolymer solution - Preparation of PUA–PEGDA–PVP coating on TPU panels and guidewires - Characterization - Cross-cut tests - Wetting tests - Friction tests - Durability tests -In vitro cytotoxicity testsHemolytic test
- RESULTS AND DISCUSSION : Synthesis of the PUA oligomer - Preparation and morphology of the PUA–PEGDA–PVP coating - Adhesion and wetting ability - Lubricating performance of PUA–PEGDA–PVP - guidewires - Durability of the PUA–PEGDA–PVP coating - In vitro toxicity and hemolysisDOI : https://doi.org/10.1007/s11998-021-00455-9 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00455-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36210
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Code-barres Cote Support Localisation Section Disponibilité 22969 - Périodique Bibliothèque principale Documentaires Disponible Preparation and properties of UV-cured epoxy acrylate/glycidyl-POSS coatings / Ying Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 3 (05/2017)
[article]
Titre : Preparation and properties of UV-cured epoxy acrylate/glycidyl-POSS coatings Type de document : texte imprimé Auteurs : Ying Wang, Auteur ; Fengguo Liu, Auteur ; Xiangxin Xue, Auteur Année de publication : 2017 Article en page(s) : p. 665-672 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Copolymère époxy acrylate
Matériaux hybrides
Photoréticulation
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements -- Séchage sous rayonnement ultraviolet:Peinture -- Séchage sous rayonnement ultraviolet
Silsesquioxanes oligomères polyhèdres
Stabilité thermiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Epoxy acrylate (EA)/glycidyl-polyhedral oligomeric silsesquioxane (G-POSS) nanocomposites were synthesized via in situ ultraviolet initiated polymerization. XRD analysis indicates that G-POSS and EA are miscible and can form uniform composites. SEM micrographs show that the G-POSS particles (<500 nm in diameter) disperse uniformly in the polymer matrix. The EA/G-POSS nanocomposites exhibit heterogeneous morphology. FTIR analysis confirms the curing reaction is quite complete, and there are no chemical reactions between G-POSS and EA during the UV-curing process. The carbon–carbon double-bond conversion vs time profiles confirm that the addition of G-POSS improves the UV-curing rates of nanocomposites. The glass transition temperature (Tg) of nanocomposites were obtained by DMA. Tg reaches to the maximum at the loading of 1 wt% and then decreases with the increasing G-POSS loadings. The thermal stability, impact resistance, and flexibility of nanocomposites are all enhanced by the incorporation of G-POSS. Note de contenu : - EXPERIMENTAL : Materials - Sample preparation - Characterizations
- RESULTS AND DISCUSSION : XRD analysis - Morphological analysis - FTIR - UV-curing process - Dynamic mechanical properties (DMA) - Thermal gravimetric analysis (TGA) - Mechanical propertiesDOI : 10.1007/s11998-016-9886-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9886-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28574
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Code-barres Cote Support Localisation Section Disponibilité 18899 - Périodique Bibliothèque principale Documentaires Disponible Preparation, characterization, and antibacterial activity of photocured thymol-doped acrylic resins / Micaela Degli Esposti in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 3 (05/2013)
[article]
Titre : Preparation, characterization, and antibacterial activity of photocured thymol-doped acrylic resins Type de document : texte imprimé Auteurs : Micaela Degli Esposti, Auteur ; Francesco Pilati, Auteur ; Moreno Bondi, Auteur ; Simona de Niederhäusern, Auteur ; Ramona Iseppi, Auteur ; Maurizio Toselli, Auteur Année de publication : 2013 Article en page(s) : p. 371-379 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antibactériens
Caractérisation
Matières plastiques -- Additifs
Photoréticulation
Polyacryliques
ThymolLe thymol est un phénol contenu dans l'huile de thym et dans les huiles essentielles (volatiles) de plusieurs autres plantes. Il se présente sous forme de cristaux incolores avec une odeur aromatique caractéristique. Il est soluble dans les alcools, le gras et l'huile et peu soluble dans l'eau. On l'utilise notamment pour ses propriétés antiseptiques, antibactériennes et antifongiques ainsi que pour stabiliser les préparations pharmaceutiques. (Dorland, 28th ed.).Index. décimale : 667.9 Revêtements et enduits Résumé : This article describes the preparation of thymol-doped acrylic resins by photopolymerization of solutions of thymol in tripropylenglycoldiacrylic monomer. This provides an easy, energy-saving, and environmental friendly process to prepare antibacterial plastics (fulfilling most of the “green chemistry” requirements). The results demonstrate that thymol can be included in the resin even at high concentration (up to 28.6%) without affecting the photocuring reaction and losing transparency. The glass transition temperature of the doped resin decreases when the thymol content increases, as it behaves like a plasticizer with respect to the acrylic resin. As indicated by HPLC analysis, thymol can be released in liquid media at a rate that depends on the chemical nature of the liquid. Evaluation by agar diffusion assays showed an antibacterial activity on both Gram-negative and Gram-positive bacteria (Staphylococcus aureus, Listeria monocytogenes, and Escherichia coli). The antibacterial activity can occur just on the plastic surface when the thymol-doped resins is applied as thin coating, while it is evident also in the surrounding agar medium for doped plastic discs, 1.2 mm thick with a concentration of thymol in the resin higher than 16.7%. Note de contenu : - EXPERIMENTAL : Materials - Preparation of the photocured resins - Characterization of the photocured resins - Thymol-release tests - Antibacterial activity evaluation
- RESULTS AND DISCUSSION : Photocuring reaction of TPGDA - Characterization of the thymol-doped photocured resin - Solvent sorption kinetics and swelling ratio of the TPGDA resin and thymol-release tests - AntibacterialDOI : 10.1007/s11998-012-9453-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-012-9453-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18736
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Code-barres Cote Support Localisation Section Disponibilité 15149 - Périodique Bibliothèque principale Documentaires Disponible 15593 - Périodique Bibliothèque principale Documentaires Disponible Preparation of 2,5-bis(methylallyl thioester)-thiadiazole with high refractive index and its coatings / Shuqian Zhou in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 6 (11/2017)
[article]
Titre : Preparation of 2,5-bis(methylallyl thioester)-thiadiazole with high refractive index and its coatings Type de document : texte imprimé Auteurs : Shuqian Zhou, Auteur ; Yajun Mao, Auteur ; Zhengfa Zhou, Auteur ; Weibing Xu, Auteur ; Haihong Ma, Auteur ; Fengmei Ren, Auteur ; Haiyang Zhu, Auteur Année de publication : 2017 Article en page(s) : p. 1457-1461 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Dithiazole
Dureté (matériaux)
Photoréticulation
Polyéthylène téréphtalate
Réfraction, Indice de
Revêtements
Stabilité thermique
ThioesterLes thioesters - aussi dénommés esters sulfuriques - sont des composés résultant de la condensation d'un sulfure avec un groupement acyle. La formule générale d'un thioester est R−C(=O)-S-R'. Ils sont le produit de l'estérification d'un acide carboxylique avec un thiol (et non avec un alcool comme dans les esters classiques). Les thioesters sont avant tout connus par leur mauvaise odeur caractéristique. Christian de Duve leur attribue un rôle clé à propos de l'apparition de la vie.
Transparence (optique)Index. décimale : 667.9 Revêtements et enduits Résumé : New high refractive index monomer of 2,5-bis(methylallyl thioester)-thiadiazole (BMATETDZ) containing thioester and dithiazole was synthesized by a one-step condensation reaction with methyl acryloyl chloride and 2,5-dimercaptothiadiazole (DTD). N–N=(C), C=O, and C–S with high molar refraction groups were introduced into the structure of BMATETDZ. FTIR and 1H NMR were used to characterize the molecular structure of BMATETDZ. The refractive index of BMATETDZ was 1.661. The coatings of poly (2,5-bis(methylallyl thioester)-thiadiazole) (C-PBMATETDZ) on polyethylene terephthalate (PET) film were prepared by photopolymerization under UV irradiation. The C-PBMATETDZ coatings exhibited better comprehensive properties with high refractive index, high hardness, good adhesive force, excellent thermal stability, and high transparency in range of 200–900 nm. Note de contenu : - EXPERIMENTAL METHODS AND MATERIALS : Material and sample preparation - Characterization
- RESULTS AND DISCUSSION : Synthesis of BMATETDZ - FTIR of BMATETDZ - Optical properties of BMATETDZ and C-PBMATETDZ - Mechanical and thermodynamic properties of C-PBMATETDZDOI : 10.1007/s11998-017-9959-9 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9959-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29657
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Code-barres Cote Support Localisation Section Disponibilité 19441 - Périodique Bibliothèque principale Documentaires Disponible Preparation of polyurethane acrylate-based titanium dioxide pigment and its use in blue light-curable ink / Chenlong Wang in COLORATION TECHNOLOGY, Vol. 137, N° 4 (12/07/2021)
[article]
Titre : Preparation of polyurethane acrylate-based titanium dioxide pigment and its use in blue light-curable ink Type de document : texte imprimé Auteurs : Chenlong Wang, Auteur ; Kai Yan, Auteur ; Xun Luo, Auteur ; Shulan Jin, Auteur ; Lili Wang, Auteur ; Jun Luo, Auteur ; Jinhuan Zheng, Auteur Année de publication : 2021 Article en page(s) : p. 348-360 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Copolymère uréthane acrylate
Dioxyde de titane
Encre
Lumière bleue
Photoréticulation
Pigments -- Synthèse
Potentiel zeta
Rhéologie
Solidité de la couleur
Taille des particulesIndex. décimale : 667.2 Colorants et pigments Résumé : Polyurethane acrylate-based titanium dioxide was used to prepare blue light-curable inks as both a white pigment to replace the original white pigment and as an oligomer. The polyurethane acrylate-based titanium dioxide was fabricated using a two-step method. In the first step, the titanium dioxide was grafted with γ-aminopropyltriethoxy silane, and the grafting process was studied. Second, amino-modified titanium dioxide was used to prepare polyurethane acrylate-based titanium dioxide, which was then used to configure the blue light-curable polyurethane acrylate-based titanium dioxide ink. Fourier Transform–infrared spectroscopy indicated that the amino-modified titanium dioxide and polyurethane acrylate-based titanium dioxide were prepared successfully. The content of the amino groups on the surface of the amino-modified titanium dioxide could be effectively controlled by adjusting the pH value. Moreover, by increasing the content of the amino groups, the viscosity decreased and the photopolymerisation efficiency increased, which was attributed to the formation of branched structures and the promoting effect of the amino groups on the titanium dioxide. The inks with decreased viscosity and branched structures displayed excellent cross-linking properties: viscoelastic transition was achieved within 10 seconds and the final moduli were in the range of 36-55 kPa. The cross-linking degree and rate were more than seven times those of unmodified ink. The ranges of elongation and stress were 95%-165% and 1.9-4.3 MPa, respectively, and the amino group content varied from 0% to 0.101%. In general, polyurethane acrylate-based titanium dioxide was shown to be suitable for blue light-curable ink. Note de contenu : - EXPERIMENTAL : Materials - Preparation of amino-modified titanium dioxide - Preparation of polyurethane acrylate-based titanium dioxide - Preparation of the blue-light-curable polyurethane acrylate-based titanium dioxide ink - Preparation of the blue light-curable polyurethane acrylate-based titanium dioxide composite films - Characteristics of amino group content on the surface of titanium dioxide - FT-IR - Particle size and zeta potential - Rheological performance of the blue light-curable polyurethane acrylate-based titanium dioxide ink - Photo-rheological performance of the blue light-curable polyurethane acrylate-based titanium dioxide ink - Tensile properties of the blue light-curable polyurethane acrylate-based titanium dioxide composite films - Measurement of colour fastness to crocking
- RESULTS AND DISCUSSION : Preparation of amino-modified titanium dioxide - Properties of polyurethane acrylate-based titanium dioxide - Properties of blue light-curable polyurethane acrylate-based titanium dioxide ink and film
- Table 1 : Effect of APS concentration on the particle size of original and modified titanium dioxide
- Table 2 : Effect of reaction temperature on the particle size of original and modified titanium dioxide
- Table 3 : Effect of pH value on th eparticle size of original and modified titanium dioxideDOI : https://doi.org/10.1111/cote.12532 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12532 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36099
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