Ability of metallic nano-particles to provide UV protection to wood surface : a preliminary experiment / Tengfei Yi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 5 (09/2022)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 5 (09/2022) . - p. 1535-550 Titre : Ability of metallic nano-particles to provide UV protection to wood surface : a preliminary experiment Type de document : texte imprimé Auteurs : Tengfei Yi, Auteur ; Jeffrey J. Morrell, Auteur Année de publication : 2022 Article en page(s) : p. 1535-550 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alumine Bois -- Revêtements protecteurs Caractérisation Colorimétrie Dioxyde de silicium Dioxyde de titane Evaluation Fourier, Spectroscopie infrarouge à transformée de Mouillabilité Nanoparticules Oxyde de fer Oxyde de zinc Pins et constituants Protection contre le rayonnement ultraviolet Index. décimale : 667.9 Revêtements et enduits Résumé : The effects of various nano-particle types and sizes on color, wettability, and surface chemistry of radiata pine (Pinus radiata) sapwood samples were investigated over 6 weeks of outdoor exposure. Specimens were treated with 0.2% wt/wt water dispersions of zinc oxide (ZnO), titanium dioxide (TiO2), aluminum oxide (Al2O3), silica dioxide (SiO2), cerium dioxide (CeO2), and iron oxide (Fe2O3), and four nano-sizes of Fe2O3. Color changes during exposure were characterized by measuring CIE L*a*b* color parameters, surface wettability changes were assessed using water droplet contact angle, and chemical changes were characterized by Fourier transform infrared spectroscopy (FTIR). Nano-particles protected wood from photo-discoloration to differing degrees with iron oxide providing the most effective and consistent protection. Smaller alpha Fe2O3 nano-particles provided better UV protection. Nano-particles did not reduce wettability of wood after UV exposure nor were they able to completely prevent lignin degradation. Zinc oxide nano-particles provided some cellulose and hemicellulose protection during UV exposure. Iron oxide nano-particles exhibited some potential for limiting degradation, but the differences were small and not significant from untreated controls. The results suggest that combinations of zinc and iron oxide might be useful for UV protection, and further trials are planned with these mixtures. Note de contenu : - MATERIALS AND METHODS : Materials - Characterization of nano-particles - Preparation of nano-particle solutions and treatment of wood surfaces - Exterior exposure - Color measurements - Wettability assessment - Fourier transform infrared spectroscopy (FTIR) - RESULTS AND DISCUSSION : Nano-particle size analysis - Color changes - Surface wettability changes - FTIR spectroscopic analysis - Table 1 : Reported and actual dimensions of nano-particles used in this study - Table 2 : Average solution uptakes of water alone or with 0.2% wt/wt of selected nano-particles - Table 3 : Climate conditions at the test site over the 6-week field exposure - Table 4 : Assignments of infrared bands to molecular bonds in wood - Table 5 : Ratios of selected peaks on the FTIR spectra with the peak at 1057 cm−1 for non-coated radiata pine wood samples before and after 6 weeks of outdoor exposure - Table 6 : Comparisons between ratios of peak heights at 3343 or 2921/2899 cm−1 with those at 1057 cm−1 for radiata pine sapwood treated with selected nano-particles and exposed outdoors for 6 weeks - Table 7 : Comparisons between peak heights of selected peaks with the peak at 1057 cm−1 for radiata pine sapwood treated with selected nano-particles and exposed outdoors for 6 weeks DOI : https://doi.org/10.1007/s11998-022-00628-8 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00628-8.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38288 [article]

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Alizarin old and new : Extraction techniques for coloration, advances in detection methods for historical textiles and novel applications as a functional dye / Khai Ly Do in COLORATION TECHNOLOGY, Vol. 140, N° 1 (02/2024)  

[article]  inCOLORATION TECHNOLOGY > Vol. 140, N° 1 (02/2024) . - p. 5-29 Titre : Alizarin old and new : Extraction techniques for coloration, advances in detection methods for historical textiles and novel applications as a functional dye Type de document : texte imprimé Auteurs : Khai Ly Do, Auteur ; Asim Mushtaq, Auteur ; Feng Zhao, Auteur ; Miao Su, Auteur Année de publication : 2024 Article en page(s) : p. 5-29 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alizarine L'alizarine est un colorant rouge d'origine végétale, extrait de la racine de la garance des teinturiers (Rubia tinctorum L.), une plante vivace de la famille des Rubiacées, autrefois largement cultivée pour la teinture qu'elle fournissait. Antimicrobiens Antioxydants Antiquités (objets anciens) -- Analyse Colorants végétaux Extraction (chimie) Protection contre le rayonnement ultraviolet Répulsifs (chimie) Teinture -- Fibres textiles Textiles et tissus -- Analyse Index. décimale : 667.3 Teinture et impression des tissus Résumé : The current study provides the first review of alizarin, a natural dye, in terms of its historical aspects and its potential for functional applications in textiles. The review begins with a brief overview of natural alizarin and its occurrence in Rubiaceae family plants, followed by a discussion of alizarin acquisition from its botanical sources through conventional and advanced extraction methods. A special emphasis of this study is on the identification of natural alizarin colourants in archaeological and cultural textiles by using analytical methods based on reflectance, Raman spectroscopy, mass spectrometry and chromatographic profiles. In addition, the functional properties of natural alizarin, including its antimicrobial activity, anti-oxidant activity, insect repellence and ultraviolet protection, are analysed. This paper summarises the methods for obtaining alizarin for coloration, as well as advanced techniques for detecting alizarin in historical textiles, and potential applications of natural alizarin as a functional textile dye. Note de contenu : - HISTORY AND BOTANICAL PROVENANCE OF ALIZARIN - EXTRACTION METHODS OF ALIZARIN FROM RUBIACEAE FAMILY PLANTS : Conventional extraction methods - Advanced extraction methods - IDENTIFICATION OF ALIZARIN IN HISTORICAL TEXTILES : Reflectance-based methods - Direct analysis in real time - Surface-enhanced Raman spectroscopy - High-performance liquid chromatography - POTENTIAL APPLICATIONS OF ALIZARIN FOR FUNCTIONAL TEXTILES : Antimicrobial activity - Anti-oxidant activity - Insect-repellent activity - UV-protective activity - Table 1 : Proposed list of plants containing alizarin as a colouring compound - Table 2 : A summary of various methods for alizarin extraction from Rubiaceae family plants - Table 3 : Summary of alizarin identification in historical and archaeological textiles DOI : https://doi.org/10.1111/cote.12711 En ligne : https://drive.google.com/file/d/1fLCZq7maaS7iQcRwPrJqlYbquisBc5TI/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40387 [article]

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Améliorer l'action des protecteurs biologiques grâce aux bicosomes / Martha Vàzquez-Gonzàlez in EXPRESSION COSMETIQUE, N° Hors série (12/2017)  

[article]  inEXPRESSION COSMETIQUE > N° Hors série (12/2017) . - p. 234-239 Titre : Améliorer l'action des protecteurs biologiques grâce aux bicosomes Type de document : texte imprimé Auteurs : Martha Vàzquez-Gonzàlez, Auteur ; Gelen Rodríguez, Auteur ; Mercedes Cócera, Auteur ; Estibalitz Fernández, Auteur ; Lucyanna Barbosa-Barros, Auteur Année de publication : 2017 Article en page(s) : p. 234-239 Note générale : Bibliogr. Langues : Multilingue (mul) Catégories : Antiradicalaire Carotène Chimie biomimétique Cosmétiques Encapsulation Peau -- Soins et hygiène Protection contre le rayonnement infrarouge Protection contre le rayonnement ultraviolet Index. décimale : 668.5 Parfums et cosmétiques Résumé : L'exposition au soleil peut endommager la peau en raison de la formation de radicaux libres qui attaquent les structures cellulaires. Ce sont les principales causes du photo-vieillissement. Le bicosome est une technologie de double encapsulation, capable de cibler des couches spécifiques de la peau grâce à un mécanisme biomimétique. Cette étude démontre la capacité des bicosomes à stabiliser et fournir des carotènes çà l'épiderme profond, afin de protéger la peau contre les dommages causés par le soleil. Note de contenu : - DE LA DIFFICULTE DE DEVELOPPER DES FORMULES TOPIQUES AVEC DES PROTECTEURS BIOLOGIQUES - CARACTERISATION DU SYSTEME : Morphologie et taille - Stabilisation des molécules de carotène par double encapsulation de bicosomes - Pénétration dans la peau - PROTECTION CONTRE LES RADICAUX LIBRES INDUITS PAR IRRADIATION AUX UV-VIS ET IR - PROTECTION CONTRE LES RAYONNEMENTS UV-VIS - PROTECTION CONTRE LE RAYONNEMENT INFRAROUGE - PROTECTION DE L'ADN : Détermination des espèces réactives d'oxygène (ERO) - Quantification de la phosphorylation de l'histone H2AX - L'EFFET PROTECTEUR ET REPARATEUR SUR CELLULES CUTANEES : Protection du collagène cutané contre les rayonnement IR - Effet de réparation : test de la lactate déshydrogénase (LDH) En ligne : https://drive.google.com/file/d/1u-vYWyHN3lx7g9wkWQAPh8XTmCbGl6oJ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29699 [article]

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Antioxidant extracts from Dicerocaryum senecioides as active ingredients in semi-permanents and hair conditioners / Hardlife Rambwawasvika in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 43, N° 4 (08/2021)  

[article]  inINTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 43, N° 4 (08/2021) . - p. 446-457 Titre : Antioxidant extracts from Dicerocaryum senecioides as active ingredients in semi-permanents and hair conditioners Type de document : document électronique Auteurs : Hardlife Rambwawasvika, Auteur ; Pamhidzai Dzomba, Auteur ; Luke Gwatidzo, Auteur ; Haleden Chiririwa, Auteur Année de publication : 2021 Article en page(s) : p. 446-457 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antioxydants Cheveux -- Soins et hygiène Conditionneurs (cosmétique) Cosmétiques Extraits de plantes:Extraits (pharmacie) Formulation (Génie chimique) Produits capillaires Protection contre le rayonnement ultraviolet shampooings Stress oxydatif Index. décimale : 668.5 Parfums et cosmétiques Résumé : - Background : Different hair types respond differently to cosmetic treatments; hence, many options ought to be availed to the consumer. The purpose of this study was to evaluate the use of antioxidant extract from Dicerocaryum senecioides as active alternatives in hair semi-permanent waving and hair conditioning. - Methods : The antioxidant phytochemicals were first identified and isolated by thin-layer chromatography (TLC) and spraying with revealing agents. The antioxidant potency was determined by DPPH antiradical scavenging and ferric reducing power methods. The extract was incorporated in two different formulations to make the extract perm (bio-semi-permanent) and the antioxidant hair conditioner (AC). The formulations had their performance examined for hair curling and conditioning on Asian and African hair types. Hair damage was assessed by scanning the surface of treated samples on an attenuated total reflectance–Fourier transform infrared spectrometer (ATR-FTIR) and by quantifying lost protein on ultraviolet visible (UV-Vis) spectrophotometer. - Results : The extract antioxidant had an IC50 of 26.54 ± 0.34 µg/ml exhibiting greater antioxidant potency compared to the controls quercetin (38.84 ± 0.12 µg/ml) and ascorbic acid (35.22 ± 0.07 µg/ml). The extract perm had a lower curling ability indicated by a perm set of 85.10 ± 3.92% and 81.35 ± 2.35% for Asian and African hairs, respectively, while commercial product, ammonium thioglycolate (ATG) had 96.05 ± 1.70% and 93.60 ± 2.21% for the same. The curling of hair with extract perm resulted in less oxidative damage with oxidative peak areas of 3.37 ± 0.09 and 3.71 ± 0.03 as well as lower protein losses of 4.72 ± 0.71 µg/mg and 5.62 ± 0.70 µg/mg on Asian and African hair samples, respectively. The application of AC reduced the oxidative damage peak areas of ATG and extract perm treated Asian hair samples by 1.15 and 0.48 units, respectively. AC was also effective in reducing damage caused by UV radiation on ATG-treated samples by 1.06 units (African hair) and 1.09 units on Asian hair. - Conclusion : The results show antioxidant extracts from Dicerocryum senecioides as a promising and safer alternative for hair conditioning and semi-permanent curling. Note de contenu : - MATERIALS AND METHODS : Collection and preparation of plant material - Isolation and identification of the antioxidants - Antioxidant assay for extracts - Formulation of a bio-semi-permanent and antioxidant conditioner - Analysis of hair damage after treatment - Statistical analysis of data - RESULTS : Detection and assaying for antioxidant with DPPH - Antioxidant assaying using ferric reducing power method - Ring test for hair curling performance - Determination of oxidative damage by ATR-FTIR - Assay for hydrolysable amino acids on treated hair samples - Protection of hair against UV radiation by antioxidant conditioner (AC) - Table 1 : Important bands for cystine derivatives and their characteristic vibrational wavenumbers - Table 2 : Treatments given to hair samples - Table 3 : Oxidative damage peak area after chemical treatment - Table 4 : Amount of protein lost by hair in different treatments - Table 5 : Hair oxidative damage expressed as cysteic acid peak area after both chemical treatment and irradiation with UV light DOI : https://doi.org/10.1111/ics.12719 En ligne : https://drive.google.com/file/d/1krMOCFzvySkX0kXPgSOVnh7zB6whzAT9/view?usp=shari [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36678 [article]

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Assessment of UV-permeability in nano-ZnO filled coatings via high throughput experimentation / Michael S. Lowry in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 2 (06/2008)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 5, N° 2 (06/2008) . - p. 233-239 Titre : Assessment of UV-permeability in nano-ZnO filled coatings via high throughput experimentation Type de document : texte imprimé Auteurs : Michael S. Lowry, Auteur ; David R. Hubble, Auteur ; Amy L. Wressell, Auteur ; Menas S. Vratsanos, Auteur ; Frank R. Pepe, Auteur ; Charles R. Hegedus, Auteur Année de publication : 2008 Article en page(s) : p. 233-239 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Copolymère uréthane acrylique Nanoparticules Oxyde de zinc Perméabilité Protection contre le rayonnement ultraviolet Vernis Index. décimale : 667.9 Revêtements et enduits Résumé : The degree of UV protection afforded by nano-ZnO in a polyurethane/acrylic clear topcoat was investigated. The influence of nano-ZnO concentration and dry film thickness on the optical properties (e.g., UV permeability and visible transmittance) of the coating was probed using a library of 28 samples that were prepared by high throughput techniques. A model for predicting the UV permeability of nano-ZnO filled coatings was developed and the nano-ZnO loading condition required to block >99% UV radiation was determined to be 2.0 g/m2. This model can be used to assist in the development of coatings and other polymeric systems embedded with nano-ZnO to protect the coating and underlying materials (i.e., substrate) from UV degradation. DOI : 10.1007/s11998-007-9064-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-007-9064-6.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2999 [article]

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Astaxanthin : Red diamond amongst antioxidants / Katharina Dokulil in GLOBAL PERSONAL CARE, Vol. 22, N° 9 (10/2021)  

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Average-size minerals for UV, Vis & IR protection / Blanca Motos-Pérez in GLOBAL PERSONAL CARE, Vol. 23, N° 1 (01/2022)  

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Basalt fibers as functional additives in coating of textiles / Carolin Ruffen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 1 (01/2021)  

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Bioglycogen has moisturizing and anti-UV effects on human skin / Takashi Furuyashiki in SOFW JOURNAL, Vol. 143, N° 3 (03/2017)  

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Chances and limits of an improved method to assess water resistance of cosmetic sunscreen products in vitro on polymethylmethacrylate plates / Stephan Biefeldt in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 35, N° 1 (02/2013)  

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A coating concept for shrink films / Stefan Schiessl in PLASTICS INSIGHTS, Vol. 113, N° 8 (2023)  

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Coating of modified ZnO nanoparticles on cotton fabrics for enhanced functional characteristics / Muhammad Usman Munir in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 2 (03/2022)  

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Coexistence effect of UVA absorbers to increase their solubility and stability of supersaturation / M. Endo in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 36, N° 6 (12/2014)  

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Combinatorial coating based on light-sensitive photocatalysts - biostatic, self-cleaning and UV protective textiles / Omid Etemad-Parishanzadeh in TECHNICAL TEXTILES, Vol. 65, N° 4 (10/2022)  

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Cryptomphalus aspersa mollusc eggs extract promotes migration and prevents cutaneous ageing in keratinocytes and dermal fibroblasts in vitro / J. Espada in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 37, N° 1 (02/2015)  

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Dornbirn 2000 / André Dubois in L'INDUSTRIE TEXTILE, N° 1327 (01/2001)

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Durable UV-protective cotton fabric by deposition of multilayer TiO2 nanoparticles films on the surface / Deshan Cheng in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 3 (05/2018)  

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Eco-shield for paints in EUROPEAN COATINGS JOURNAL (ECJ), N° 9 (09/2017)  

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EcoSun Pass : A tool to evaluate the ecofriendliness of UV filters used in sunscreen products / S. Pawlowski in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 43, N° 2 (04/2021)  

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Effect of reactive dyeing on the UV protection affected by knitted fabric made from different types of cotton fibre / C. W. Kan in COLORATION TECHNOLOGY, Vol. 132, N° 2 (04/2016)  

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