Biodegradable polymer coating for controlled release of hydrophobic functional molecules from cotton fabrics / Coral Hartman in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 3 (05-06/2020)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 3 (05-06/2020) . - p. 669–679 Titre : Biodegradable polymer coating for controlled release of hydrophobic functional molecules from cotton fabrics Type de document : texte imprimé Auteurs : Coral Hartman, Auteur ; Yanay Popowski, Auteur ; Daniel Raichman, Auteur ; Elizabeth Amir, Auteur Année de publication : 2020 Article en page(s) : p. 669–679 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Azulène L'azulène est un hydrocarbure aromatique polycyclique de formule C10H8. C'est un monoterpène isomère du naphtalène, mais avec des propriétés sensiblement différentes de ce dernier. Il se présente sous la forme de cristaux bleu foncé (le naphtalène sous la forme de cristaux blancs) qui sont utilisés en cosmétique. C'est un constituant des huiles essentielles, en particulier de l'huile bleue de la camomille matricaire qui en contient entre 9 % et 12 % (sour forme de chamazulène), de l'achillée millefeuille qui contient environ 3 % de chamazulène et du cyprès bleu (Callitris intratropica) qui contient environ 1 % de guaiazulène. Biomolécules actives Biopolymères Coton Le coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles). Hydrophobie Revêtements organiques Système de libération contrôlée (technologie) Index. décimale : 667.9 Revêtements et enduits Résumé : Despite major advances in polymer chemistry, cotton still remains the principal textile component in the global pharmaceutical industry owing to its intrinsic strength, thermal stability, biocompatibility, and pleasant texture. Nevertheless, the hydrophilic nature of cotton requires the development of strategies for the incorporation of hydrophobic functional molecules into the fabric for controlled-release applications. To address this issue, we designed biodegradable crosslinked poly(β-amino ester) (PBAE) coatings as reservoirs for the incorporation of small hydrophobic molecules and studied their release profiles under physiological conditions. Two PBAEs with different hydrophobic and degradation properties were prepared and crosslinked to cotton fabrics in the presence of azulene, which served as a model hydrophobic, active material. Optimization of the crosslinking process in terms of UV curing time and the amount of solvent revealed that curing time of 15 min using 0.5 mL of chloroform was the optimal crosslinking condition. The coatings were characterized by FTIR, XPS, and SEM as well as TGA and DSC analyses. Sustained release of azulene was observed, and there was a correlation between azulene delivery rates and the hydrophobicity of the coating. These results provide a potentially useful platform for the rational design of cotton-based controlled-release systems for bioactive molecule delivery applications. Note de contenu : - MATERIALS AND METHODS : Materials - Instrumentation - Synthetic procedures - Azulene release experiments - RESULTS AND DISCUSSION : Synthesis and characterization of PBAE - macromers - Preparation of crosslinked PBAE-coated cotton fabrics - Azulene incorporation into cotton fabric - Azulene release studies DOI : https://doi.org/10.1007/s11998-019-00278-3 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00278-3.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34098 [article]

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Comparative release rates from controlled release polymer coatings—comparisons between models and experiment / Prakash S. Sane in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 4 (07/2019)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 4 (07/2019) . - p. 1193-1200 Titre : Comparative release rates from controlled release polymer coatings—comparisons between models and experiment Type de document : texte imprimé Auteurs : Prakash S. Sane, Auteur ; Kumar Ghosh Swapan, Auteur ; Donald Sundberg, Auteur Année de publication : 2019 Article en page(s) : p. 1193-1200 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Etudes comparatives Revêtements -- Additifs:Peinture -- Additifs Revêtements antisalissures:Peinture antisalissures Revêtements organiques Système de libération contrôlée (technologie) Index. décimale : 667.9 Revêtements et enduits Résumé : Controlled release devices and coatings are used heavily in widely varying applications. Here, we focus on applications to antifouling coatings by adding an active agent to polymeric coatings. Quantitative models were developed for four distinctively different methods of dispersing the active agent in the coating. The predicted release rates from these models were contrasted to reveal the inherent differences in the time-dependent release rate profiles achievable from these types of coatings. The majority of these four coatings (monolithic, dispersed particle and reservoir membrane) release the active agent with greatly varying rates over their effective lifetimes, while a microcapsule-based coating has the potential to produce relatively constant rates of release. While the models are potentially of great value, they require a number of parameters, particularly the diffusion coefficient of the active agent through the polymer, to be quantified. We demonstrate how such parameters can be quantified through release rate measurements from simple experimental coatings. Note de contenu : - MODELING FRAMEWORK : Monolithic coatings - Dispersed particle coatings - Reservoir membrane coatings - Microcapsule-based coatings - EXPERIMENTAL WORK : Materials - Emulsion polymerization - Typical paint preparation - Characterization - RESULTS AND DISCUSSION : Comparative release rates from different types of coatings - Experimental release rates DOI : 10.1007/s11998-019-00226-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-019-00226-1.pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32873 [article]

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Conductive polymers as anticorrosive additive for marine coatings : a review / Umesh Wagh in PAINTINDIA, Vol. LXX, N° 9 (09/2020)  

[article]  inPAINTINDIA > Vol. LXX, N° 9 (09/2020) . - p. 84-95 Titre : Conductive polymers as anticorrosive additive for marine coatings : a review Type de document : texte imprimé Auteurs : Umesh Wagh, Auteur ; Vivek Krishnan, Auteur ; Ashok Kumar, Auteur Année de publication : 2020 Article en page(s) : p. 84-95 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosifs Anticorrosion Conducteurs organiques Corrosion Epoxydes Métaux -- Oxydation anodique Métaux -- Revêtements protecteurs Passivité (Chimie) Polyaniline Polythiophènes Revêtements -- Additifs:Peinture -- Additifs Système de libération contrôlée (technologie) Thermogravimétrie Index. décimale : 667.9 Revêtements et enduits Résumé : Protection of metals and alloys against corrosion by using organic coatings is an area of great interest. Thus, the development of new paints attempts to improve the performance increasing their corrosion resistance and extending the fields of application. Within coating technology, there is increasing interest in the development of efficient anticorrosive additives able to replace the conventional inorganic anticorrosive pigments usually added to paints, which may have detrimental effects on both environment and health. A number of recent studies have evidenced that the modification of a paint formulation by the addition of a low concentration of conducting polymer (0.2-0.3%, w/w) increases sign ificantly the protective properties of the coating. Here we focus on the principles of anticorrosive additives based on conducting polymers for marine paints. The article reviews the most important findings achieved in recent studies. The general aim of this work is to set new standards for research and development in the paint industry by focussing on the addition of a conducting polymerto paint formulation without losing its properties and assuring a good performance. Note de contenu : - Basics of corrosion - Introduction to conductive polymers - Conventional paint system for corrosion protection - Conductive polymers (CP) based anticorrosive paints - Mechanism of corrosion protection using conducting polymers - Anodic protection mechanism - Controlled inhibitor release mechanism - Fig. 1 : Electrochemical corrosion showing rusting of plain carbon steel - Fig. 2 : Chemical structure of polythiophene and polyaniline - Fig. 3 : Outline of the redox-reactions that combines the emeraldine form and the leuco forms of polyaniline and their chemical structures - Fig. 4 : TGA curve of epoxy paint with and without corrosion inhibitors - Fig. 5 : Photographs of the painted rectangular test pieces (scale bar: 1 cm): (a) initial sample, (b) and (c) samples without and with conducting polymer, respectively, optical micrographs from the polymeric films (scale bar: 200_m) and scanning electron micrographs (scale bar: 100 _m) - Fig. 6 : Passivation of steel by conducting PANI-based paint coating - Fig. 7 : Controlled inhibitor release mechanism for a metal, M coated by a CP layer such as PANI doped with an ion, A-which acts as a corrosion inhibitor En ligne : https://drive.google.com/file/d/14IhkCrcgpw7YVYEajqQYxADflGg77zRs/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34662 [article]

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Controlled fertilizer release via tunable poly(vinyl alcohol)/ammonium sulfate-coated nonwoven materials / Ilhan Özen 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. 93-102 Titre : Controlled fertilizer release via tunable poly(vinyl alcohol)/ammonium sulfate-coated nonwoven materials Type de document : texte imprimé Auteurs : Ilhan Özen, Auteur ; Gamze Okyay, Auteur ; Ulaş Abdullah, Auteur Année de publication : 2019 Article en page(s) : p. 93-102 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alcool polyvinylique Engrais organiques Glutaraldéhyde Nontissés Revêtement de surface Sulfate d'ammonium Système de libération contrôlée (technologie) Index. décimale : 667.9 Revêtements et enduits Résumé : In this study, nonwoven fabrics were coated with two different ammonium sulfate fertilizer loadings (27.75% and 55.50%) by using two different poly(vinyl alcohol) types (high and low molecular weight). The poly(vinyl alcohol) coating amounts were adjusted to 60 and 120 g/m2. In order to study the effect of poly(vinyl alcohol) crosslinking on fertilizer release, a glutaraldehyde (GA) crosslinking agent was used in two different ratios (GA/PVOH ratio: 0.01 or 1). A concentration of 0.01 GA was insufficient for PVOH crosslinking, and water absorption capacity was reduced with increasing poly(vinyl alcohol) and glutaraldehyde loading amount. Fertilizer release was affected mostly by molecular weight and loading amounts of poly(vinyl alcohol) and fertilizer. It was possible to achieve controlled fertilizer release when the nonwoven fabric was coated at 120 g/m2 with high molecular weight poly(vinyl alcohol) containing 55.50% ammonium sulfate fertilizer in the absence of glutaraldehyde. Note de contenu : - EXPERIMENTAL : Materials - Methods - RESULTS AND DISCUSSION : Morphology - FTIR - Gel fraction - Dynamic and equilibrium water absorption capacity - Ammonium nitrogen release DOI : 10.1007/s11998-018-0103-2 En ligne : https://link.springer.com/article/10.1007/s11998-018-0103-2 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31968 [article]

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Design of leather footwear for diabetics containing chlorhexidine digluconate microparticles / Fatih Yalcin in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 3 (03/2020)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXV, N° 3 (03/2020) . - p. 79-86 Titre : Design of leather footwear for diabetics containing chlorhexidine digluconate microparticles Type de document : texte imprimé Auteurs : Fatih Yalcin, Auteur ; Huseyin Ata Karavana, Auteur ; Seda Rencber, Auteur ; Sinem Yaprak Karavana, Auteur Année de publication : 2020 Article en page(s) : p. 79-86 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antiseptiques Caractérisation Chaussures -- Conception et construction Cuir Diabète Digluconate de chlorhexidine Encapsulation Ethylcellulose Formulation (Génie chimique) Matériaux -- Imprégnation Microbiologie Particules (matières) Pieds -- Soins et hygiène Système de libération contrôlée (technologie) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : ChlorHexidine Digluconate [CHD] was encapsulated inside an ethylcellulose shell material [Aquacoat ECD], and then spray dried to produce mixed microparticles (MPs). The validity and functional quality of the resultant [CHD-MPs] were analyzed on vamp and lining leather which are used to manufacture shoes for diabetics. The morphology, efficiency of encapsulation and in vitro release characteristics of the [CHD-MPs] were optimized in order to impregnate [CHD-MPs] onto leather footwear for diabetics. Scanning electron microscopy (SEM) was used to characterize the [CHD-MPs] and the leathers treated with it. SEM images illustrated that the [CHD-MPs] were spherical, smooth in shape and adhered well to leather. In vitro CHD-release studies from its MPs, and for leather treated with it were performed in phosphate buffer saline at pH =7.2. There was an inherently controlled release behaviour of CHD for all the formulations on leather. Finally, microbiologic studies on leather treated with [CHD-MPs] were done. This study suggested that footwear containing [CHD- MPs] is/will improve the quality of daily life for diabetics. Note de contenu : - EXPERIMENTAL : Materials - METHODS : Prepration of MPs - Particle morphology of the MPs - Conditions of Ultra-Performance Liquid Chromatography (UPLC) - Encapsulation efficiency of the MPs - FT-IR analysis - In vitro drug release of the MPs - Application of the MPs on the leathers - Scanning Electron Microscopy (SEM) of the leathers with the MPs - In vitro drug release of the leathers with MPs - Microbiologic studies on leathers with MPs - RESULTS AND DISCUSSION : Particle morphology - UPLC conditions - Encapsulation efficiency - Fourier Transform Infrared Spectroscopy (FT-IR) - In vitro drug release of the MPs - SEM of the leathers with the MPs - In vitro drug release of the leathers impregnated with MPs - Microbiologic studies on leathers with MPs DOI : https://doi.org/10.34314/jalca.v115i03.1625 En ligne : https://drive.google.com/file/d/1bMgMmBeb608l3LTX7OTST1S0mMdLW9-K/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33885 [article]

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Drug equipped polymer fibers for "medication you can wear" / René Rossi in CHEMICAL FIBERS INTERNATIONAL, Vol. 68, N° 4 (12/2018)  

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Effect of zinc oxide and zinc oxide nanoparticles coating on urea diffusion and its release kinetics for design and development of slow-release fertilizer: an experimental and numerical investigation / Bilal Beig in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 1 (01/2024)  

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Electrospun bead-on-string PLA nanofibers for sustained drug release / Liu Zhaolin in CHEMICAL FIBERS INTERNATIONAL, Vol. 69, N° 4 (12/2019)  

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L’enroulement spontané des films polymères / Valeriy Luchnikov in L'ACTUALITE CHIMIQUE, N° 426 (02/2018)

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Formulation and characterization of polyester-lignite composite coated slow-release fertilizers / Gunaratnam Abhiram in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 1 (01/2023)

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Formulation and testing of a slow-release antimicrobial paint: a case study of antifungi and antialgae activity for interior and exterior applications / Amir S. Kazemi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 2 (03/2023)  

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Formulation development and characterization of highly water-soluble drug-loaded extended-release pellets prepared by extrusion–spheronization technique / Muhammad Iqbal Nasiri ; Rabia Ismail Yousuf ; Muhammad Harris Shoaib ; Kamran Zaheer ; Tariq Ali ; Kamran Ahmed ; Faaiza Qazia ; Sohail Anwer in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 5 (09/2019)  

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Hyperbranched polymers - A primer for their uses in the leather industry / Wang Xue-Chuan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 2 (03-04/2006)  

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Lubricant controlled release silicone fouling release coatings based on mesoporous molecular sieves / Jinhua Lei in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 2 (03/2023)  

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Overview on progress in polysaccharides and aliphatic polyesters as coating of water-soluble fertilizers / Taha El Assimi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 4 (07/2022)  

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Reloadable antimicrobial coatings based on amphiphilic silicone networks / J. C. Tiller in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B1 (03/2005)  

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Sustainable protection of building façades / Frank Sauer in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 203, N° 4580 (01/2013)  

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Sustained actives release using silica aerogel / Naoki Arifuku in GLOBAL PERSONAL CARE, Vol. 25, N° 6 (06/2024)  

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Toward a new generation of fertilizers with the approach of controlled-release fertilizers: a review / Samira Moradi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 1 (01/2024)  

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A tunable controlled-release urea fertilizer coated with a biodegradable polyurethane-nanoclay composite layer / Kannika Sitthisuwannakul in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 2 (03/2023)  

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