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A new dye-modified poly(ethylene oxide)–poly(propylene oxide) polymer used as a dispersant for CI Disperse Red 60 / Bin Zhang in COLORATION TECHNOLOGY, Vol. 129, N° 5 (10/2013)
[article]
Titre : A new dye-modified poly(ethylene oxide)–poly(propylene oxide) polymer used as a dispersant for CI Disperse Red 60 Type de document : texte imprimé Auteurs : Bin Zhang, Auteur ; Xia Dong, Auteur ; Jian Xian, Auteur ; Jinxin He, Auteur Année de publication : 2013 Article en page(s) : p. 377-384 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants -- Adsorption
Colorants -- Synthèse
Copolymères séquencés
Dispersions et suspensions
Eaux usées -- Analyse
Isotherme d'adsorption
Polyesters
Polyéthylène glycol
Polyoxypropylène
Résistance au lavage
Teinture -- Fibres textiles synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : A new dye-modified poly(ethylene oxide)–poly(propylene oxide) polymer, in which the dye molecule (CI Disperse Red 60) is bonded onto polyether monoamine via a triazine ring, was synthesised for the preparation of dye aqueous dispersions and was characterised by Fourier Transform-infrared spectroscopy, 1H nuclear magnetic resonance spectroscopy and elemental analysis. This polymer exhibits unique dispersing performance for CI Disperse Red 60. The mechanism behind the improved performance is briefly discussed with the help of adsorption isotherms. The results indicated that the hydrophobic dye group of this polymer can strongly adsorb onto the dye particle surface through π–π interaction while its long hydrophilic poly(ethylene oxide) chains allow the formation of a thick layer around the dye particles. It was speculated that the adsorbed polymer molecule on the dye surface would form a brush-like monolayer conformation. The dyeing performance of the prepared dye dispersions on polyester fabrics was also investigated. It was found that this polymer can effectively increase the apparent solubility of disperse dye. The dyed fabrics showed very good to excellent fastness to washing and rubbing, while the dyeing effluent was colourless. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of dye-modified poly(ethylene oxyde)-poly(propylene oxide) polymer - Characterisation - Dye dispersion preparation and characterisation- Adsorption measurements - Dyeing and measurements - Analysis of dye wastewater
- RESULTS AND DISCUSSION : Characterisation of dye-modified (poly(ethylene oxyde)-poly(propylene oxide) polymer - Dispersion stability - Adsorption isotherms - Dispersion mechanism - Dyeing performance and fastness properties - Dyeing effluentDOI : 10.1111/cote.12036 En ligne : http://onlinelibrary.wiley.com/doi/10.1111/cote.12036/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19359
in COLORATION TECHNOLOGY > Vol. 129, N° 5 (10/2013) . - p. 377-384[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15533 - Périodique Bibliothèque principale Documentaires Disponible Optimisation of ultrasonic-assisted extraction of natural dyes from pomegranate rind using response surface methodology and its characterisation / TengFei Lei in COLORATION TECHNOLOGY, Vol. 137, N° 3 (06/2021)
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Titre : Optimisation of ultrasonic-assisted extraction of natural dyes from pomegranate rind using response surface methodology and its characterisation Type de document : texte imprimé Auteurs : TengFei Lei, Auteur ; Ying Pan, Auteur ; Bin Zhang, Auteur ; RongZhan Liu, Auteur ; YuanFeng Pan, Auteur Année de publication : 2021 Article en page(s) : p. 259-271 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antibactériens
Antioxydants
Caractérisation
Colorants végétaux
Extraction par ultrasons
Fourier, Spectroscopie infrarouge à transformée de
Grenade (fruit) et constituants
Mesure
Plan d'expérience
Teinture -- Fibres textilesIndex. décimale : 667.2 Colorants et pigments Résumé : This paper reports the optimal ultrasonic-assisted extraction (UAE) conditions for the maximum recovery of natural dyes from pomegranate rind using response surface methodology. The optimum UAE conditions were found to be an extraction time of 60 minutes, an extraction temperature of 65°C, a water to material ratio of 19 mL/g and an ultrasonic power of 132 W. The yield of the extracted pomegranate rind dyes (PRD) under optimum conditions was 17.1% ± 0.1%, which closely agrees with the predicted value of 17.2%. Fourier Transform–infrared and ultraviolet-visible absorption spectroscopy indicated that there were no significant structural changes in the PRD under optimal UAE conditions. The PRD particle size was clearly reduced, and the distribution was more uniform under the action of the ultrasonic waves. The total anti-oxidant activity of the PRD was analysed using DPPH• assay, and the results indicated that a proper and reasonable ultrasonic-assisted treatment can enhance the anti-oxidant capacity of the pomegranate rind natural dyes. Furthermore, in comparison with Staphylococcus aureus using the Agar plate method, the anti-bacterial activity indicated that the fabrics dyed with PRD under UAE conditions displayed outstanding anti-bacterial activity. Note de contenu : - EXPERIMENTAL : Materials - PRD extraction procedure - Measurements - Experimental design
- RESULTS AND DISCUSSION : Optimisation of the UAE conditions by RSMDOI : https://doi.org/10.1111/cote.12528 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12528 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36092
in COLORATION TECHNOLOGY > Vol. 137, N° 3 (06/2021) . - p. 259-271[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22845 - Périodique Bibliothèque principale Documentaires Disponible Preparation and anticorrosive performances of polysiloxane-modified epoxy coatings based on polyaminopropylmethylsiloxane-containing amine curing agent / Ling Chen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 4 (07/2011)
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Titre : Preparation and anticorrosive performances of polysiloxane-modified epoxy coatings based on polyaminopropylmethylsiloxane-containing amine curing agent Type de document : texte imprimé Auteurs : Ling Chen, Auteur ; Shuxue Zhou, Auteur ; Shisen Song, Auteur ; Bin Zhang, Auteur ; Guangxin Gu, Auteur Année de publication : 2011 Article en page(s) : p. 481-487 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion
Cardanol
Epoxydes
Revêtements
Revêtements protecteurs
SiliconesLes silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki).
Spectroscopie d'impédance électrochimiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : In this article, polysiloxane-modified epoxy coatings were prepared using the mixture (CPSA) polyaminopropylmethylsiloxane (PAPMS) oligomer/N-(2-hydroxyethyl)ethylenediamine as a curing agent and cardanol as a compatibilizer. The PAPMS oligomer was prepared from the controlled hydrolysis and condensation of (γ-aminopropyl)methyldimethoxysilane. Conventional epoxy coatings based on commercial phenalkamine epoxy curing agent (PECA) were also fabricated for comparison. The compatibility between the CPSA amine curing agent and epoxy resin was investigated by SEM and element-mapping measurements. The anticorrosive performances of the CPSA- or PECA-based epoxy coatings were thoroughly examined by electrochemical impedance spectroscopy (EIS), salt fog tests, and immersion experiments in acid (25 wt % NaCl). It was found that cardanol can dramatically improve the miscibility of CPSA with epoxy resins. Polysiloxane-modified (namely, CPSA-based) epoxy coatings have much better corrosion resistance than conventional (namely, PECA-based) epoxy coatings. Note de contenu : EXPERIMENTAL : Materials - Preparation of the hardener - Preparation of epoxy protective paints - Characterization
RESULTS AND DISCUSSION : FTIR analyses - The compatibility of CPSA with epoxy resin - Electrochemical impedance results - Anticorrosive performances - WeatherabilityDOI : 10.1007/s11998-010-9311-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9311-0.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12136
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 4 (07/2011) . - p. 481-487[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 013158 - Périodique Bibliothèque principale Documentaires Disponible