A coating that really delivers in COATINGS TECH, Vol. 9, N° 7 (07/2012)  

[article]  inCOATINGS TECH > Vol. 9, N° 7 (07/2012) . - p. 22-23 Titre : A coating that really delivers Type de document : texte imprimé Année de publication : 2012 Article en page(s) : p. 22-23 Langues : Américain (ame) Catégories : Biomatériaux Revêtements -- Emploi en thérapeutique Revêtements multicouches Technologie médicale Vecteurs (pharmacie) Index. décimale : 667.9 Revêtements et enduits Résumé : A new coating technology developed at MIT might help improve the success rate for implants and save the lives of wounded soldiers on the battlefield. The technology-developed in the research group of Paula Hammond and David H. Koch involves layer-by-layer (LBL) deposition of biocompatible materials that can incorporate active biological compounds such as growth factors or blood clotting agents. The LBL technique is water-based and readily adaptable to commercial scale, and initial tests have been very promising. Note de contenu : - Helping bone implant patients - Saving the lives of soldiers En ligne : https://drive.google.com/file/d/1EBbyUkJHP04l3U-FV0z7F_TLhvZTkegA/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15705 [article]

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Coatings for medical application / Rohit Raj in PAINTINDIA, Vol. LVIII, N° 4 (04/2008)

[article]  inPAINTINDIA > Vol. LVIII, N° 4 (04/2008) . - p. 75-100 Titre : Coatings for medical application Type de document : texte imprimé Auteurs : Rohit Raj, Auteur Année de publication : 2008 Article en page(s) : p. 75-100 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antimicrobiens Biomatériaux Médecine -- Appareils et matériel Revêtements -- Emploi en thérapeutique Index. décimale : 667.9 Revêtements et enduits Résumé : Over the years, the use of coatings for medical devices and drug delivery has gone though a paradigm shift from being a rarity to being an absolute necessity. The latest generations of coatings have become indispensable in augmenting the capabilities of medical devices and implants. Without these coatings, many medical devices would never reach their true potential in the intended application. They impart a wide variety of properties such as lubricity, biocompatibility, and antimicrobial action to device surfaces. In addition to the above mentioned properties, coatings for medical devices are also being used extensively to carry out specific local drug release and make medical implants more visible to imaging systems. With the introduction ofdrug-eluting stents (DES), treatment of coronary artery disease has gone through a radical change, which resulted in improved success rates of a minimally-invasive surgery-an alternative to open heart surgery known as percutaneous transluminal coronary angioplasty (PTCA). DES, are basically mesh tubes coated with a slow release drug that helps to prevent coronary renarrowing of coronary artery after coronary angioplasty. As medicine moves further along the spectrum from invasive to non-invasive, device manufacturers increasingly demand slippery or lubricious coatings. Non-invasive procedures require slippery maneuverable catheters that physicians can move easily through small blood vessels or delicate tissue. With lubricious coatings on an increasing number of medical devices, surgeons can perform procedures that were impossible a decade ago. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8900 [article]

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New sol-gel synthesis of NiO antibacterial nano-pigment and its application as healthcare coating / V. S. Benitha in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 1 (01/2019)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 1 (01/2019) . - p. 59-70 Titre : New sol-gel synthesis of NiO antibacterial nano-pigment and its application as healthcare coating Type de document : texte imprimé Auteurs : V. S. Benitha, Auteur ; k. Jeyasubramanian, Auteur ; R. Mala, Auteur ; G. S. Hikku, Auteur ; R. Rajesh Kumar, Auteur Année de publication : 2019 Article en page(s) : p. 59-70 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antibactériens Nanoparticules Pigments inorganiques Polyalkydes Revêtements -- Emploi en thérapeutique Revêtements organiques Sol-gel, Procédé Index. décimale : 667.9 Revêtements et enduits Résumé : This report deals with the fabrication of NiO nanoparticle (NiO Nps) dispersed alkyd coating and its antimicrobial activity. NiO Nps is prepared by novel sol–gel technique using pectic polysaccharides as a gelling agent. The gelling agent converts the hydroxo-metal network into a gel within 4 h of time. After calcination, the FESEM and TEM micrograph of the obtained NiO Nps shows cubic and irregular shaped structures with size ranging from 30 to 200 nm. The structural characterizations have been evaluated through XRD, FTIR, UV–vis and VSM studies. The antimicrobial activity of NiO Nps has been carried out against both gram negative and gram positive bacteria namely Escherichia coli, Klebsiella pneumonia and Proteus vulgaris, Streptococcus mutans, Bacillus subtilis, and Staphylococcus aureus. The findings of the present study indicate that the NiO Nps permeate the bacterial cell wall, accumulated inside thereby facilitating the synergistic impact against the growth of bacterial strains. The experimental outcomes suggest the potential use of NiO as pigments in the alkyd coating. Alkyd coating consisting of NiO Nps exhibits considerable reduction in bacterial viability when it comes in contact against microbial strains, proving the efficacy of the coating. Note de contenu : - EXPERIMENTAL SECTION : Preparation of NiO Nps - Preparation of NiO Nps alkyd coating - Instrumentation - Antibacterial studies - RESULTS AND DISCUSSION : Pigment characterization - Characterization of alkyd coatings - Antibacterial activity DOI : 10.1007/s11998-018-0100-5 En ligne : https://link.springer.com/article/10.1007/s11998-018-0100-5 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31965 [article]

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Preparation of superhydrophobic titanium surface via the combined modification of hierarchical micro/nanopatterning and fluorination / Zhen Wang 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. 967-975 Titre : Preparation of superhydrophobic titanium surface via the combined modification of hierarchical micro/nanopatterning and fluorination Type de document : texte imprimé Auteurs : Zhen Wang, Auteur ; Bing Ren, Auteur Année de publication : 2022 Article en page(s) : p. 967-975 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation Chimie des surfaces Dispositifs médicaux Fluoroalkylsilane Hydrophobie Implants médicaux Infections nosocomiales Mouillabilité Revêtements -- Emploi en thérapeutique Titane Traîtements de surface Index. décimale : 667.9 Revêtements et enduits Résumé : Adhesion of bacteria and platelets on blood-contact implants and surgical devices is one of the causes of infections and thrombus. A superhydrophobic surface serving as a protective layer can minimize adhesion and contamination due to the low surface energy. The objective of this paper is to construct a superhydrophobic surface on a titanium implant by a combination of a topological structure and chemical coating. First, a micro/nano hierarchical morphology is obtained by sandblasting, acid-etching, and anodic oxidation. Then, a low surface energy coating material (fluoroalkylsilane, as the example case in this study) is used to modify the surface further. The effects of the morphology of micro and/or nanoscales and corresponding fluorination on the wettability are investigated. The results show that a hierarchical surface with microroughness and nanotubes is successfully constructed, and the contact angle (CA) is 44.9°, indicating good hydrophilicity. Interestingly, after being modified by fluoroalkylsilane, the surface converted from hydrophilic to superhydrophobic with a CA of 151.4°. In contrast, the fluorination modification of single micro or nanofeatures cannot achieve superhydrophobicity, indicating that the micro/nanostructures may show a synergistic effect for an efficient fluorination coating later on. Overall, our results demonstrate the feasibility of achieving a superhydrophobic surface via the micro/nano topological patterning and fluorination modification. The proposed method is expected to enrich the preparation technologies of superhydrophobic titanium surfaces. Note de contenu : - MATERIALS AND METHODS : Anodic oxidation parameter settings - Construction of micro/nano hierarchical structures - Fluoroalkylsilane (FAS) modification - Surface characterization - RESULTS : Effects of electrolyte and voltage during anodic oxidation - Surface morphology - Chemical composition - Surface wettability DOI : https://doi.org/10.1007/s11998-021-00576-9 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00576-9.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38090 [article]

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Surfaces that help healing / Chris Koppenborg in KUNSTSTOFFE INTERNATIONAL, Vol. 101, N° 5 (05/2011)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 101, N° 5 (05/2011) . - p. 58-60 Titre : Surfaces that help healing Type de document : texte imprimé Auteurs : Chris Koppenborg, Auteur Année de publication : 2011 Article en page(s) : p. 58-60 Langues : Anglais (eng) Catégories : Médecine -- Appareils et matériel Mousses plastiques Polymères en médecine Polyuréthanes Revêtements -- Emploi en thérapeutique Index. décimale : 668.4 Plastiques, vinyles Résumé : Foams and Coatings - Polyurethane foams based on new raw materials absorb fluids quickly without swelling. Other advanced materials used as coatings for catheters and stents release medical active ingredients in a controlled fashion, or reduce sliding friction. Extensive tests demonstrate not only the benefits, but also the good biocompatibility of the coatings. Note de contenu : - Absorbing without swelling - Programmed release of active ingredients - Tests in the research and development center En ligne : https://drive.google.com/file/d/19_5Y-ak6Qxd0704g8U0BvlfMV3UrNoDX/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14818 [article]

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