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Evaluating combinations of leather fungicides by inhibition zone / Gu Haibin in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 2 (03-04/2007)
[article]
Titre : Evaluating combinations of leather fungicides by inhibition zone Type de document : texte imprimé Auteurs : Gu Haibin, Auteur ; Changqing Zhao, Auteur ; Wuyong Chen, Auteur ; Yan Li, Auteur Année de publication : 2007 Article en page(s) : p. 63-68 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Conservation
Fongicides
Inhibition microbienne
SynergieIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : synergism index (SI, Formula (1)) and graphical method (Fig. 1) expressed by the minimum inhibitory concentrations (MIC) are often used to evaluate the type of action of combined leather fungicides. The determination of MIC is a complicated and time-consuming process and the exact value is difficult to determine, so a rapid, simple method would be useful to evaluate synergistic combinations. In this study, a formula of the synergism index (SI*, Formula (3)) and the graphical method (Fig. 3) expressed by the diameters of inhibition zones were defined.
(2-thiocyanoethyl)-cinnamate (A) and a commercial product of Isothiazoline whose active ingredients are the mixture 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one (B) were chosen for combination, and the diameters of inhibition zones and minimum inhibitory concentrations for the effectiveness of different combinations to nine fungi were determined to verify the feasibility of the two methods.
Results show that the values of SI calculated by MIC and the value of SI* calculated by diameters of inhibition zones are only slightly different, but they both show the same tendency in that, to most fungi and for most proportions, the values of SI and SI* are all less than 1.0. So, the different combinations of A and B show a synergistic effect or additive effect and the method of SI* is viable to evaluate their action. The relation between the value of SI* and the type of action is same as that of SI. Regarding the graphical method, the results for MIC show a dramatic synergistic effect that is different from that of SI method, and the results of evaluation of diameters of inhibition zones is similar to that of SI* method. So the graphical method expressed by the diameters of inhibition zones is also usable. As the determination of inhibition zones is a relative simple process, the two new methods are very convenient for evaluating synergistic combinations of leather fungicides.Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Preparation off ungal spore suspensions - Preparation ofme dium containing fungal spores - Evaluation ofaction type by crossed filter paper strip - Mensuration ofdiam eter ofinhibit ion zone - Determination ofminim um inhibitory concentration (MIC)
- RESULTS AND DISCUSSION : Evaluation by crossed filter paper strip - Evaluation by synergism index - Evaluation ofacti on type by the graphical methodEn ligne : https://drive.google.com/file/d/1wYcVNUB_nVyO6LGAkIDktar9D2dydMan/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39035
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 91, N° 2 (03-04/2007) . - p. 63-68[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Self-healing hybrid coating of phytic acid/silane for improving the corrosion resistance of magnesium alloy / Yan Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 3 (05/2018)
[article]
Titre : Self-healing hybrid coating of phytic acid/silane for improving the corrosion resistance of magnesium alloy Type de document : texte imprimé Auteurs : Yan Li, Auteur ; Shu Cai, Auteur ; Guohua Xu, Auteur ; Feiyang Zhang, Auteur ; Fengwu Wang, Auteur Année de publication : 2018 Article en page(s) : p. 571-581 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Biomatériaux
Electrochimie
Magnésium -- Alliages
Matériaux hybrides
Matériel médical
Métaux -- Revêtements protecteurs
Revêtement autoréparant
Test d'immersionIndex. décimale : 667.9 Revêtements et enduits Résumé : In order to improve the corrosion resistance of a biodegradable magnesium alloy, a series of phytic acid/3-aminopropyltrimethoxysilane (γ-APS) hybrid coatings was prepared on AZ31 magnesium alloys by dipping the magnesium alloy into the mixing solution of phytic acid and γ-APS. During the preparation of hybrid coatings, the pH values of the mixing solutions greatly affected the uniformity of the coatings and subsequently influenced their corrosion resistance. Electrochemical tests indicated that the hybrid coating prepared in the solution of pH = 8.0 could highly improve corrosion resistance of AZ31 magnesium alloys. Meanwhile, corrosion current density of the hybrid coating coated sample was significantly decreased from the uncoated sample of 138.1 ± 11.9 to 8.5 ± 0.8 μA cm−2. Immersion test in simulated body fluid revealed that the cracks on the surface of the hybrid coating gradually healed up during the lengthy immersion. Note de contenu : - EXPERIMENTAL METHOD AND MATERIALS : Materials and reagents - Synthesis of hybrid coatings of AZ31 magnesium alloy substrates - Coating characterization - Immersion test - Electrochemical test
- RESULTS AND DISCUSSION : Coating characterization and formation kinetics of hybrid coatings - In vitro degradation behavior - Electrochemical behaviors - "Self-healing ability of hybrid coatingsDOI : 10.1007/s11998-017-0014-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-0014-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30753
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