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Monitoring biocide retention / Sachin Vasudeo Naik in EUROPEAN COATINGS JOURNAL (ECJ), N° 10 (10/2012)
[article]
Titre : Monitoring biocide retention : Non-destructive radiotracer method can determine leaching rates Type de document : texte imprimé Auteurs : Sachin Vasudeo Naik, Auteur ; Ranjit Vishnu Tambe, Auteur ; Harish Jagat Pant, Auteur ; Vijay Kumar Sharma, Auteur ; Gurusharan Singh, Auteur ; Vadakke Kodakara Parmeshwaran Unni, Auteur Année de publication : 2012 Article en page(s) : p. 24-29 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antimicrobiens
Chlorure de polyvinyle
Contrôle non destructif
Durée de vie (Ingénierie)
Lixiviation
Revêtements
Traceurs radioactifsIndex. décimale : 667.9 Revêtements et enduits Résumé : Test methods - Measurements of the rate at which biocides leach out of paint are useful in order to predict the service life of exterior coatings subject to fungal and algal growth. The radiotracer technique was examined by preparing radioactive diuron biocide and incorporating it in test paints. This appears to be a very precise non-destructive test method. Paint PVC appears to strongly affect the leaching rate of diuron. Note de contenu : - Why biocide leaching tests are important
- How radioactive tracer techniques are used
- Experimental procedure summarised
- How radio-labelled diuron was prepared
- Repeatability of radioactivity tests is high
- Linearity of measurement system is confirmed
- Three test paints compared in leaching study
- Clear differences in protective effects confirmed
Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16045
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 10 (10/2012) . - p. 24-29[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14206 - Périodique Bibliothèque principale Documentaires Disponible Quantitative and structural analysis of isotopically labelled natural crosslinks in type I skin collagen using LC-HRMS and SANS / Yi Zhang in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 1 (Année 2019)
[article]
Titre : Quantitative and structural analysis of isotopically labelled natural crosslinks in type I skin collagen using LC-HRMS and SANS Type de document : texte imprimé Auteurs : Yi Zhang, Auteur ; Rafea Naffa, Auteur ; Christopher J. Garvey, Auteur ; Catherine Maidment, Auteur ; Sujay Prabakar, Auteur Année de publication : 2019 Article en page(s) : 9 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse quantitative (chimie)
Chromatographie en phase liquide
Collagène -- Structure
Cuirs et peaux
Réticulation (polymérisation)
Spectrométrie de masse
Traceurs radioactifsIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Collagen structure in biological tissues imparts its intrinsic physical properties by the formation of several covalent crosslinks. For the first time, two major crosslinks in the skin dihydroxylysinonorleucine (HLNL) and histidinohydroxymerodesmosine (HHMD), were isotopically labelled and then analysed by liquid-chromatography high-resolution accurate-mass mass spectrometry (LC-HRMS) and small-angle neutron scattering (SANS). The isotopic labelling followed by LC-HRMS confirmed the presence of one imino group in both HLNL and HHMD, making them more susceptible to degrade at low pH. The structural changes in collagen due to extreme changes in the pH and chrome tanning were highlighted by the SANS contrast variation between isotopic labelled and unlabelled crosslinks. This provided a better understanding of the interaction of natural crosslinks with the chromium sulphate in collagen suggesting that the development of a benign crosslinking method can help retain the intrinsic physical properties of the leather. This analytical method can also be applied to study artificial crosslinking in other collagenous tissues for biomedical applications. Note de contenu : - EXPERIMENTAL METHODS : Materials and methods
- RESULTS AND DISCUSSION : Characterization of natural crosslinks in skin collagen : isotopic labelling using NaBD4 and mechanism of HHMD formation - Quantification of natural crosslinks in skin collagen : relationship with pH and crosslinking conditions - Structural analysis of skin collagen : interplay between natural and artificial crosslinks
- Table 1 : Collagen D-periodicity at different processing stages in control, reduced and labelled skin samples. The D-period decreased for all samples starting from raw to the pickled stage, then increased at the crosslinked stageDOI : https://doi.org/10.1186/s42825-019-0012-x En ligne : https://link.springer.com/content/pdf/10.1186/s42825-019-0012-x.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36955
in JOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 1 (Année 2019) . - 9 p.[article]