Dyeing of woven polyester fabric with curcumin : effect of dye concentrations and surface pre-activation using air atmospheric plasma and ultraviolet excimer treatment in COLORATION TECHNOLOGY, Vol. 128, N° 3 (2012)

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 3 (2012) . - p. 223-229 Titre : Dyeing of woven polyester fabric with curcumin : effect of dye concentrations and surface pre-activation using air atmospheric plasma and ultraviolet excimer treatment Type de document : texte imprimé Année de publication : 2012 Article en page(s) : p. 223-229 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Curcumine Lampes à excimère Plasma à pression atmosphérique Un plasma à pression atmosphérique (ou plasma à PA ou plasma froid) est le nom donné à une catégorie spéciale de plasma pour lequel la pression approche celle de l’atmosphère. Le plasma à pression atmosphérique marque une nette différence avec le plasma basse et haute pression. En effet, contrairement à ces derniers aucune enceinte de traitement n'est nécessaire. Ce type de plasma peut donc être utilisé directement sur ligne de production, évitant ainsi l'utilisation de vide qui est extrêmement onéreuse. Polyesters Teinture -- Fibres textiles synthétiques Tissés Index. décimale : 667.3 Teinture et impression des tissus Résumé : Dyeing of polyester fabric with curcumin was studied at 90 and 130 °C without and with a prior surface activation of polyester fabric using two different ecotechnologies: air atmospheric plasma treatment and ultraviolet excimer lamp at 172 nm. Without surface activation, dyeing with curcumin followed classical disperse dye behaviour, with higher dye uptake at 130 °C than at 90 °C, and saturation was readily reached at 2% dye owf at 130 °C with a colour yield of 22. Surface-sorbed curcumin molecules extracted with ethanol seemed to increase the colour yield values at 90 °C dyeing, while at 130 °C they decreased the colour yield values. When dyeing was carried out after a prior surface activation of the polyester fabrics, increased colour yield was observed at both dyeing temperatures for the ultraviolet excimer lamp only (with colour yield increasing from 2 to 10 at 90 °C and from 22 to 28 at 130 °C for a 2% dye owf). Indeed, both surface activation methods yielded hydrophilic species at the polyester fabric fibre surface, which were confirmed by water contact angle, X-ray photoelectron spectroscopy measurements and atomic force microscopy. However, the surface of the polyester fabric activated using plasma lost all of its hydrophilic species, reaching the water contact angle of untreated polyester when subjected to the dyeing conditions. The excimer treatment yields hydrophilic species that are more resistant to high temperature and pressure dyeing. Note de contenu : - EXPERIMENTAL : Material - Dyeing with curcumin and characterisation of curcumin-dyed PET fabrics - PET fabric surface activation - PET fabric surface characterisation - RESULTS AND DISCUSSION : Dyeing of PEt fabric with curcumin without surface activation - Dyeing of PET fabric with curcumin with surface activation using UV excimer treatment - Dyeing of PET fabric with curcumin with surface activation using air atmospheric plasma treatment - Characterisation of UV excimer and plasma-activated PET woven fabrics DOI : 10.1111/j.1478-4408.2012.00367.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15125 [article]

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Extracts of curcumin-incorporated hybrid sol–gel coatings for the corrosion mitigation of mild steel in 0.5 M HCl / Nur 'Amirah Ishak in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 6 (11/2020)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 6 (11/2020) . - p. 1515-1535 Titre : Extracts of curcumin-incorporated hybrid sol–gel coatings for the corrosion mitigation of mild steel in 0.5 M HCl Type de document : texte imprimé Auteurs : Nur 'Amirah Ishak, Auteur ; Tuan Sherwyn Hamidon, Auteur ; Tan Zi-Hui, Auteur ; M. Hazwan Hussin, Auteur Année de publication : 2020 Article en page(s) : p. 1515-1535 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs Anticorrosion Caractérisation Curcumine Extraction (chimie) Hydrophobie Métaux -- Revêtements protecteurs Sol-gel, Procédé Surfaces -- Analyse Index. décimale : 667.9 Revêtements et enduits Résumé : Curcumin was extracted from turmeric using two solvents (ethanol and water), doped with hybrid (TEOS-APTES) sol–gel coatings for the corrosion protection of mild steel. Characterization of curcumin extracts was carried out using integral analyses, namely FTIR, NMR, DSC, TGA, total phenolic content, and antioxidant assay. Corrosion-inhibitive ability of coatings doped with curcumin extracts (25, 50, 75, and 100 ppm) were evaluated via electrochemical impedance spectroscopy and potentiodynamic polarization measurements. It was evident that sol–gel incorporated with 100 ppm ethanol extract provided more than 90% of inhibition efficiency. Coated mild steel surfaces were characterized using FTIR, SEM/EDX, and water contact angle analysis where coatings incorporated with curcumin extracts were found to be hydrophobic (θ = 100.2°). Note de contenu : - EXPERIMENTAL : Collection of turmeric - Extraction of curcumin - Characterization of curcumin - Corrosion inhibition analysis - Surface analyses - RESULTS AND DISCUSSION : Fourier transform infrared (FTIR) spectroscopy measurement - Nuclear magnetic resonance (NMR) spectroscopy measurement - Thermal gravimetric analysis (TGA) measurement - Differential scanning calorimetry (DSC) measurement - Total phenolic content measurement - Ferric reducing power measurement - High-performance liquid chromatography (HPLC) measurement - Corrosion inhibition analysis results DOI : https://doi.org/10.1007/s11998-020-00364-x En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00364-x.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34957 [article]

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Fabric dyeing with colorimetric pH-responsive colours / Roberta Peila in COLORATION TECHNOLOGY, Vol. 137, N° 2 (04/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 2 (04/2021) . - p. 123-133 Titre : Fabric dyeing with colorimetric pH-responsive colours Type de document : texte imprimé Auteurs : Roberta Peila, Auteur ; Alessio Varesano, Auteur ; Claudia Vineis, Auteur ; Vittorio Bobba, Auteur ; Jacopo Bobba, Auteur ; Anne Piriou, Auteur ; Michele Barazzotto, Auteur Année de publication : 2021 Article en page(s) : p. 123-133 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acétate de cellulose L'acétate de cellulose est une matière plastique inventée en 1865. C'est l'ester acétate de la cellulose. Bleu (couleur) Colorants halochromiques 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). Curcumine Evaluation Laine pH Polyacrylonitrile Polyamide 66 Rouge (couleur) Teinture -- Fibres textiles Violet Index. décimale : 667.3 Teinture et impression des tissus Résumé : This paper explores the possibility of dyeing textile fabrics with halochromic dyes. Five different halochromic dyes were tested: bromocresol purple, m-cresol purple, chlorophenol red, curcumin and bromothymol blue. Preliminary dyeing was carried out on wool, polyacrylonitrile, polyester, polyamide 6.6, cotton and cellulose acetate at 100°C for 40 minutes to evaluate affinity. All the dyes showed good affinity to wool and polyamide 6.6. Cotton required a mordant phase before dyeing. Washing and light fastness were evaluated for the dyed fabrics, as well as colour changes at different pH values. Some fibres displayed good dye fastness and halochromic properties. Bromothymol blue was selected to dye polyamide 6.6 and cotton fabrics. The dyed fabrics displayed good halochromic properties across a pH range of 4 to 10. Cotton fabrics exhibited an immediate colour change; polyamide 6.6 changed colour after several minutes. An industrial dyeing process was performed on natural cellulosic fibres. The results confirmed the possibility of scaling up the process with regard to textile applications of halochromic dyes. Note de contenu : - EXPERIMENTAL : Materials - Methods - Analysis - RESULTS AND DISCUSSION : Evaluation of the halochromic properties of the dyes - Multifibre textile fabric dyeing - Polyamide 6.6 textile fabric dyeing with bromothymol blue - Cotton gauze dyeing with bromothymol blue - Industrial dyeing with bromothymol blue dye DOI : https://doi.org/10.1111/cote.12511 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12511 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36072 [article]

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Hair bulb epigenetic reset by genuine plant growth factors / Oscar Expósito in SOFW JOURNAL, Vol. 142, N° 10 (10/2016)  

[article]  inSOFW JOURNAL > Vol. 142, N° 10 (10/2016) . - p. 34-42 Titre : Hair bulb epigenetic reset by genuine plant growth factors Type de document : texte imprimé Auteurs : Oscar Expósito, Auteur ; Mireia Perez, Auteur ; Maria Mas, Auteur ; Ana Gallego, Auteur ; Tarik Ruiz, Auteur ; Sara Laplana, Auteur Année de publication : 2016 Article en page(s) : p. 34-42 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cheveux -- Croissance Cheveux -- Soins et hygiène Curcuma et constituants Curcumine Extraits de plantes:Extraits (pharmacie) Produits capillaires Index. décimale : 668.5 Parfums et cosmétiques Résumé : Hair loss is a problem that affects both men and women and has diverse origins. Despite the different aetiologies, there is a common link between them : dermal papilla cells become latent, and all the hair growth processes stop. The ingredient CAPILIA LONGA ppf, made from Curcuma longa (Turmeric) callus culture, offers a solution to the problem. lt represents the first generation of plant peptides (Phyto-Peptidic FractionsTM) and achieves hair growth reactivation through a biological approach : rich in signalling peptides specially designed to create the optimal micro-environment to reactivate growth, it produces an epigenetic reset of the hair bulb, reactivating dermal papilla cells and simultaneously nourishing the hair follicle with a nutritive blend, It represents a new activity profile for the species : a new range of bioactives (curcurnin is only 2-5% turmeric powder). A full panel of tests support there claims : in vitro studies measured the ability of the ingredient to activate processes of proliferation and release of key growth factors for the production of new hair and epigenetic modulation in dermal papilla cells, while the in vivo tests showed up to 89% hair loss reduction, up to 52% increase of hair density and an average of 13,500 new hairs. Note de contenu : - INTRODUCTION : Hair loss, a problem beyond aesthetics - DERMAL PAPILLA, THE CONDUCTOR OF THE ORCHESTRA : Insulin growth factor-1 (IGF-1) - miRNAs - PLANTS AND HAIR, NATURALLY SIMILAR - FIRST GENERATION OF PLANT PEPTIDES - A NEW CURCUMA LONGA, MORE THAN CURCUMIN - EXPERIMENTAL : In vitro efficacy En ligne : https://drive.google.com/file/d/1BPZKYDKjcSkZs54hFtqMu7t9cM2Ybv7h/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27695 [article]

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Influence of curcumin-modified graphene oxide on antibacterial properties of polyurethane coating / Nguyen Thuy Duong in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 5 (09/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 5 (09/2021) . - p. 1379-1387 Titre : Influence of curcumin-modified graphene oxide on antibacterial properties of polyurethane coating Type de document : texte imprimé Auteurs : Nguyen Thuy Duong, Auteur ; Van Cuong Bui, Auteur ; Bo An Tran, Auteur ; Thanh Thao Phan, Auteur ; Ke Oanh Vu, Auteur ; Anh Son Nguyen, Auteur ; Anh Truc Trinh, Auteur ; Thi Chinh Tang, Auteur ; Thi Xuan Hang To, Auteur Année de publication : 2021 Article en page(s) : p. 1379-1387 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antibactériens Caractérisation Curcumine Essais (technologie) Oxyde de graphène Polyuréthanes Revêtements -- Propriétés physiques Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : This study aims to prepare antibacterial coatings based on polyurethane and curcumin-modified graphene oxide. Curcumin-modified graphene oxide (GO-CU) as an antibacterial agent was prepared using the adsorption method. GO-CU was incorporated in polyurethane (PU) coatings at concentrations of 0.1 and 0.5 wt%. Synthesized GO-CU was characterized by Fourier transform infrared spectroscopy, UV–Vis spectroscopy, transmission scanning electron microscopy, and zeta potential measurement. Curcumin content in GO-CU was determined by thermogravimetric analysis. Antibacterial properties of GO-CU powder and PU coatings containing GO-CU were investigated by counting the colony-forming unit (CFU) of Escherichia coli (E. coli) strain. The results showed that curcumin was attached on GO-CU surface and curcumin content in GO-CU was about 32.9%. GO-CU provided a higher antibacterial effect against E. coli than GO. The antibacterial efficiency of PU coatings containing 0.1 wt% GO-CU was 85.8%; however, the increase in GO-CU concentration did not significantly increase the antibacterial efficiency of PU coating. Note de contenu : - EXPERIMENTAL : Materials - Modification of graphene oxide by curcumin - Preparation of polyurethane coatings containing GO-CU - Analytical characterization - Antibacterial test of GO-CU - Antibacterial test of PU coatings containing GO-CU - RESULTS AND DISCUSSION : Characterization of Go-CU - Morphology of PU coating containing GO-CU - Physical properties of PU coating - Antibacterial ability of GO-CU and PU coating loading GO-CU - Table 1 : Physical properties of coatings DOI : https://doi.org/10.1007/s11998-021-00502-z En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00502-z.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36440 [article]

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Into the red storm : fighting the effects of inflammation / Marisabel Mourelle in PERSONAL CARE EUROPE, Vol. 12, N° 2 (04/2018)  

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Preparation and drug release properties of curcumin-loaded PVA-PAA nanofibers / Shi Jiayin in CHEMICAL FIBERS INTERNATIONAL, Vol. 72, N° 3 (09/2022)  

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Vers de nouvelles perspectives en optoélectronique organique / Anthony d'Aléo in L'ACTUALITE CHIMIQUE, N° 433 (10/2018)  

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