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Homogeneous dispersion of cellulose/graphite oxide nanofibers in water-based urushiol coatings with improved mechanical properties and corrosion resistance / Lei Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 5 (09/2023)
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Titre : Homogeneous dispersion of cellulose/graphite oxide nanofibers in water-based urushiol coatings with improved mechanical properties and corrosion resistance Type de document : texte imprimé Auteurs : Lei Zhang, Auteur ; Haitang Wu, Auteur ; Chonglin Zhao, Auteur ; Lingce Kong, Auteur ; Xiaohua Huang, Auteur Année de publication : 2023 Article en page(s) : p. 1649-1660 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Caractérisation
CelluloseLa cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules.
Greffage (chimie)
Matériaux hybrides
Nanofibres
Oxyde de graphène
Revêtements -- Propriétés mécaniques
Revêtements en phase aqueuse
Revêtements organiques
UrushiolL’urushiol est une toxine organique que l'on trouve dans les plantes de la famille des Anacardiaceae, spécialement dans le genre Toxicodendron (par exemple le sumac grimpant en Amérique du Nord). Il provoque des allergies de la peau ou dermatites, pouvant être importantes, au contact de ces plantes. Le nom vient du mot japonais urushi (漆?), qui désigne une laque produite dans l'Asie orientale à partir du suc des arbres kiurushi (arbre à laque). L'oxydation et la polymérisation de l'urushiol dans le suc de l'arbre en présence d'humidité permet de former une laque dure utilisée traditionnellement pour produire des objets d'art laqués en Chine et au Japon.Index. décimale : 667.9 Revêtements et enduits Résumé : A polymeric coating based on a reactive urushiol-based polymeric emulsion was synthesized by grafting cellulose nanofibers (CNF) and graphene oxide (GO) onto the urushiol backbone, followed by phase inversion to obtain a cellulose nanofiber-graphene oxide/water-based urushiol emulsion (GO-CNF/WU). Following silane treatment (APTES), well-dispersed CNF-GO composites were obtained due to molecular interactions at the interface (including covalent, π-π and hydrogen bonding) between CNF and GO, resulting in a WU polymer which served as a mixing matrix to stabilize and improve the resulting GO-CNF through chemical-crosslinking. As expected, the mechanical properties (hardness and adhesion) and anticorrosion protection of the WU films were improved considerably after incorporating GO-CNF composites at fairly low concentrations. Compared to the WU film, the coated tinplate with the GO-CNF/WU coating displayed higher anticorrosion efficiency, with a PE of 99%. In addition, the pencil hardness of the GO-CNF/WU coatings increased significantly, from 2 to 6H, and adhesion was remarkably enhanced from grade 6 to 1 after the addition of 10% MGO to the films. Due to the synergistic protective effect of CNF and GO, the method may represent a facile and environmentally friendly approach to integrate multi-nanoscale blocks into WU polymer with excellent mechanical properties and corrosion resistance. Note de contenu : - MATERIALS AND METHODS : Materials - Preparation of GO-CNF suspensions - Preparation of the water-based O/W urushiol emulsion - Film preparation - Characterization of the GO-CNF/WU composite coating
- RESULTS AND DISCUSSION : FTIR characterization - XRD characterization - XPS analysis - Micromorphology of WU films - Electrochemical behavior - Mechanical properties
- Table 1 : Atomic concentrations and relative carbon composition of samples
- Table 2 : Impedance measurements and protection efficiencies of WU coatings containing GO and CNF in 3.5% NaCl at 25°C
- Table 3 : Mechanical properties of pure WU, GO/WU, CNF/WU and GO-CNF/WU composite coatingsDOI : https://doi.org/10.1007/s11998-023-00770-x En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00770-x.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39978
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 5 (09/2023) . - p. 1649-1660[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24242 - Périodique Bibliothèque principale Documentaires Disponible Homogeneous Zr and Ti co-doped SBA-15 with high specific surface area : preparation, characterization and application / Qiang Taotao in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 1 (Année 2019)
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Titre : Homogeneous Zr and Ti co-doped SBA-15 with high specific surface area : preparation, characterization and application Type de document : texte imprimé Auteurs : Qiang Taotao, Auteur ; Yajuan Xia, Auteur ; Zhao Jing, Auteur Année de publication : 2019 Article en page(s) : 12 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorbants et adsorbants
Adsorption
Caractérisation
Chimie analytique
Composés inorganiques -- Synthèse
Santa Barbara Amorphous-15Santa Barbara Amorphous-15 (SBA-15) is a highly stable mesoporous silica sieve developed by researchers at the University of California at Santa Barbara. It gets it high hydrothermal and mechanical stability from a framework of uniform hexagonal pores that feature a narrow pore-size distribution and a tunable pore diameter of 5nm to 15nm, but, most significantly, from its relatively thick walls, which range between 3.1nm and 6.4nm. SBA mesoporous silica 15 has a high internal surface area, which lends itself to various applications, including environmental adsorption and separation, advanced optics, and catalysts. (ACS Materials)
Surfaces (technologie)
Tannage
Thermodynamique
Titane
ZirconiumIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : A facile synthesis procedure is proposed to prepare homogeneous Zr and Ti co-doped SBA-15 (Zr-Ti-SBA-15) with high specific surface area of 876.0 m2 g− 1. Based on “masking mechanism” from tanning, lactic acid was used as masking agent to obtain the uniform distribution of Zr and Ti species in the SBA-15 framework. The obtained materials were characterized by powder X-ray diffraction (XRD), nitrogen adsorption-desorption isotherms, scanning electron microscope (SEM), transmission electron microscope (TEM) and X-ray photoelectron (XPS). The results reveal that in mesoporous materials, the presence of lactic acid gives rise to the uniform distribution of Zr and Ti species. The adsorption equilibrium and kinetic studies of Zr-Ti-SBA-15 materials show that the adsorption process conforms to the Langmuir isotherm and pseudo-second-order kinetic model, respectively. Regenerational experiments show that the Zr-Ti-SBA-15 displays a significant adsorption ability for methylene blue (MB) (up to 291.6 mg/g), along with good reusability, indicating promising potentials of commercialization. Methodologically, this work provides a wide range of possibilities for further development of SBA-15 based on bimetallic and sewage disposal. Note de contenu : - EXPERIMENTAL SECTION : Materials - Preparation of Zr-Ti -SBA-15 - Characterization of Zr-Ti-SBA-15 - Adsorption measurement - Regeneration experiment
- RESULTS AND DISCUSSION : XRD characterization - N2 adsorption-desorption - TEM and SEM characterization - EDS characterization - XPS characterization - Adsorption measurement of Zr-Ti-SBA-15 - Kinetic analysis - Adsorption isotherms - Thermodynamics analysis - Regeneration experiment of Zr-Ti-SBA-15
- Table 1 XRD texture properties of the samples
- Table 2 Textural parameters of the samples
- Table 3 The pseudo-first-order and pseudo-second-order kinetic model parameters for MB adsorption on Zr-Ti-SBA-15 composite
- Table 4 Isothermal parameters for MB adsorption on Zr-Ti-SBA-15 composite
- Table 5 Comparison of the maximum adsorption capacity of different adsorbents
- Table 6 The values of thermodynamics parameters for MB adsorption on Zr-Ti-SBA-15
- Table 7 The leaching data of Zr and Ti during desorption processDOI : https://doi.org/10.1186/s42825-019-0004-x En ligne : https://link.springer.com/content/pdf/10.1186/s428 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36946
in JOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 1 (Année 2019) . - 12 p.[article]Horseradish peroxidase-mediated polyethylene glycol-templated polymerisation of gallic acid and pyrrole to improve the functionalisation and dyeing properties of silk fabrics / Na-won Baek in COLORATION TECHNOLOGY, Vol. 139, N° 1 (02/2023)
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Titre : Horseradish peroxidase-mediated polyethylene glycol-templated polymerisation of gallic acid and pyrrole to improve the functionalisation and dyeing properties of silk fabrics Type de document : texte imprimé Auteurs : Na-won Baek, Auteur ; Dan Wang, Auteur ; Xun Zhang, Auteur ; Jie Wang, Auteur ; Xue-rong Fan, Auteur Année de publication : 2023 Article en page(s) : p. 45-56 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Polyéthylène glycol
Polymérisation
Polymérisation enzymatique
Polyphénols
Polypyrroles
Soie et constituants
Solidité de la couleur
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Silk fabrics treated with gallic acid/pyrrole (PGA/PPy) complexes polymerised using horseradish peroxidase have higher electrochemical activity than silk fabrics dyed with gallic acid alone. However, the degree of polymerisation decreases. As a result, the ultraviolet (UV) protection and fastness of the silk fabric were lowered. To solve this problem, we studied the degree of polymerisation of the complex and the functionality of dyed silk fabrics by applying a polyethylene glycol (PEG) template to the enzymatic polymerisation of PGA/PPy. The polymerisation mechanism of the complexes was analysed in detail using UV-visible spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, and high-performance liquid chromatography electrospray ionisation mass spectrometry (HPLC-ESI-MS). Consequently, the PGA/PPy/PEG complex has a higher degree of polymerisation than the PGA/PPy prepared without PEG, indicating that the PEG template can promote the polymerisation of PGA and PPy. As a result, we found that the presence of the PEG template improved the thermal stability and UV protection function of the dyed silk fabric, but did not impair the electrochemical activity of silk fabric. As a result of analysing the colour depth, it exhibited a higher K/S value compared to the dyed silk fabric in the absence of PEG. Additionally, its colour fastness was improved. Note de contenu : - MATERIALS AND METHODS : Reagents and materials - Enzymatic oxidative polymerisation of gallic acid - Dyeing process of silk fabrics - Characterisation of polymers - Characterisation of silk fabrics
- RESULTS AND DISCUSSION : Characterisation of PGA, PFA and the PGA/PPy, PFA/PPy complexes - Properties of functionalised silk fabrics -
- Table 1 : Possible mass-to-charge (m/z) assignments for PGA, PGA/PPy and PGA/PPy/PEG
- Table 2 : Anti-ultraviolet (UV) activity of the treated silk fabrics
- Table 3 : CIELab values obtained for the dyed silk samples
- Table 4 : The colour fastness of the dyed silk fabricDOI : https://doi.org/10.1111/cote.12634 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12634 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39204
in COLORATION TECHNOLOGY > Vol. 139, N° 1 (02/2023) . - p. 45-56[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24084 - Périodique Bibliothèque principale Documentaires Disponible How to characterise kaolin so that you want to use it in your formulation and buy it from the supplier / Artur Palasz in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 212, N° 4675 (06/2022)
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Titre : How to characterise kaolin so that you want to use it in your formulation and buy it from the supplier Type de document : texte imprimé Auteurs : Artur Palasz, Auteur Année de publication : 2022 Article en page(s) : p. 33-38 Langues : Anglais (eng) Catégories : Brillance (optique)
Brillance (optique) -- Mesure
Caractérisation
Essais (technologie)
Formulation (Génie chimique)
Kaolin
Opacifiants
Revêtements -- Additifs:Peinture -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : Each latex paint formulator, both experienced and novice, has encountered various kaolins in start point formulations, which are usually an additional filler, as a titanium dioxide substitution, sheen and gloss modifier of paints in the middle range of pigment volume concentration, or simply as an additional filler present in a formulation without indicating its special property to be added to it. For the latter reason, usually formulators of latex paints, not having sufficiently presented benefits of using a specific kaolin in the formulation, decide to replace it with other types of kaolin. Often, such a substitution is dictated by economic decisions, as the kaolin present in the stripe formulation may be more expensive than the one currently available for the production of current latex paints or requires an order as it has not been used in a given paint factory so far. Often, the lack of appropriate case studies showing the benefits of using this particular kaolin result in modification of the starting recipe in the direction of deteriorating the properties of the coatings, e.g. in terms of opacity, sheen and gloss, etc. Of course, such modifications are carried out mostly unconsciously, because the formulator intends to replace it with a different kaolin, which is assumed to be a similar kaolin that is currently used in production recipes. Note de contenu : - FACTORS IMPACTING CRITICAL PERFORMANCE FEATURES : Appearance of dry coating - Change from wet hiding to dry hiding - Hiding power at fixed spreading rate - Enhancing sheen and gloss when dry rubbing
- KAOLIN USED IN THE STUDIES
- EXPERIMENTAL : Slurries preparation - Paint formulations
- TEST RESULTS : Appearance of dry coating - Wet-to-dry change
- Hiding power at fixed spreading rate - Burnish resistance
- Table 1 : Characteristics of akolins used in the case studies
- Table 2 : Base formulation of paints prepared with slurries
- Table 3 : Formulation constants for paints based on all kaolins used in the preparation of paints
- Table 4 : Summary of the results of sheen and gloss measurements with the requirements of EN 1330 and MPI
- Table 5 : Hiding power test results according to ISO 6504-3En ligne : https://drive.google.com/file/d/1AIggtzEVNl1x3mg9_X9NtwIUP2c_goyC/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37784
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 212, N° 4675 (06/2022) . - p. 33-38[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23475 - Périodique Bibliothèque principale Documentaires Disponible How to prepare test report for super plasticizer PCE base ? / Harish Agrawal in PAINTINDIA, Vol. LXXI, N° 12 (12/2021)
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Titre : How to prepare test report for super plasticizer PCE base ? Type de document : texte imprimé Auteurs : Harish Agrawal, Auteur Année de publication : 2021 Article en page(s) : p. 116 Langues : Anglais (eng) Catégories : Caractérisation
Plastifiants
Rapports techniques
SpécificationsIndex. décimale : 668.9 Polymères En ligne : https://drive.google.com/file/d/1WON8aMRrXA54qZ2R4ZgKKifyy291IsWr/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37122
in PAINTINDIA > Vol. LXXI, N° 12 (12/2021) . - p. 116[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23262 - Périodique Bibliothèque principale Documentaires Disponible Hybrid epoxy-SiO2/GO nanosheets anti-corrosive coating for aeronautic aluminum Al6061-T5 / Jevet E. D. López-Campos in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 2 (03/2024)
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PermalinkHydrogen peroxide-oxidized soybean polysaccharides as novel masking agents for zirconium tanning / Haolin Zhu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 7 (07/2021)
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PermalinkHydrophilic nano-SiO2/PVA-based coating with durable antifogging properties / Guoqiang Wu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 5 (09/2020)
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PermalinkHydrophobic phytic acid conversion layers for corrosion protection of steel surfaces / Michelle Weinert in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 2 (03/2024)
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PermalinkHyperbranched-linear polymers as promising leather additives / Wang Xuechuan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 1 (01-02/2017)
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PermalinkHyperbranched polyglycerol as an additive for water-based printing ink / Zuzanna Zolek-Tryznowska in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 2 (03/2015)
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PermalinkHyperbranched polymer surfactant : synthesis, characterization and surface tension activity / Ren Longfang in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 3 (Année 2021)
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PermalinkHyperbranched polyurethanes with flammability resistance for leather retanning / Sheng Ding in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 10 (10/2022)
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PermalinkIdentification and characterisation of Aspergillus sp. from leather / Muhammad Ali in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 6 (11-12/2021)
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PermalinkIdentification and characterization of potential biocide-resistant fungal strains from infested leathers - A systematic study / Kavitha Sundar in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 2 (02/2020)
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PermalinkIdentification and quantification of CI Reactive Blue 19 dye degradation product in soil / Chengcheng Fen in COLORATION TECHNOLOGY, Vol. 137, N° 3 (06/2021)
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PermalinkIdentification du comportement mécanique de tissu 3D interlock chaire à base de mèches de lin / Henri Lansiaux in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 29, N° 4 (08/2019)
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PermalinkIdentification du comportement mécanique de tissu 3D interlock chaire à base de mèches de lin / Henri Lansiaux in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 29, N° 5 (10/2019)
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PermalinkIllustration de la complémentarité de la résonance magnétique nucléaire et de la spectrométrie de masse / Caroline Barrère-Mangote in L'ACTUALITE CHIMIQUE, N° 393-394 (02-03/2015)
PermalinkImidization of styrene-maleic anhydride copolymer for dispersing nano-SiO2 in water / Tao Xue in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 6 (11/2023)
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