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Development of a prototype for the rubber latex industry to detect dry rubber content of fresh natural rubber latex using a novel measurement system with proton-electron transfer / Sittidet Chooduang in INTERNATIONAL POLYMER PROCESSING, Vol. 38, N° 2 (2023)
[article]
Titre : Development of a prototype for the rubber latex industry to detect dry rubber content of fresh natural rubber latex using a novel measurement system with proton-electron transfer Type de document : texte imprimé Auteurs : Sittidet Chooduang, Auteur ; Korn Taksapattanakul, Auteur Année de publication : 2023 Article en page(s) : p. 225-232 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caoutchouc Tags : Détection 'Caoutchouc sec' 'Latex caoutchouc frais' 'Mesure par transfert de protons-électrons' Index. décimale : 668.4 Plastiques, vinyles Résumé : Rubber latex industry has been looking for techniques to rapidly estimate the dry rubber content (DRC) of rubber latex with accuracy, at a low cost, and to be used by non-technical people in the field. The basis of electrical charge in terms of proton-electron transfer (P.E.TF) was used to develop a new prototype. The prototype was created with the P.E.TF system, two electrode probe detectors, and a new code program on Arduino board. The data was collected using the P.E.TF system of fresh natural rubber latex and presented as the P.E.TF number and the percentage of dry rubber content (%DRC). The standard method (ISO126:2005(E)) was used to calculate %DRC. The comparison of the %DRC measurement using the prototype and the standard method was studied. It was found that the new code program on Arduino board could evaluate the data. In real-time, it converted the P.E.TF number into %DRC on the LCD screen. The %DRC measurement using the prototype was close to that calculated using the standard method. The correlation between the two methods is 0.9814 of Rsqr. Therefore, the novel measurement system can replace the standard method for the %DRC measurement of fresh natural rubber latex. The prototype is simple, fast to detect, small, and low-cost without operator training. Note de contenu : - The new device
- Proton-electron transfer (P.E.TF) system
- Code program on Arduino board
- Data collection
- Result and discussion : Data collection with the new code program, the P.E.TF system of the prototype, and the standard method (ISO126:2005(E)) - Conversion of the P.E.TF number into the %DRC with the code program
- Table 1 : The data ranges of the P.E.TF number and the %DRC of fresh natural rubber latex
- Table 2 : The % DRC measurement of fresh natural rubber latex using the prototype with the P.E.TF system
- Table 3 : The % DRC measurement of fresh natural rubber latex using the standard method, ISO126:2005(E)DOI : https://doi.org/10.1515/ipp-2022-4304 En ligne : https://drive.google.com/file/d/1UG3luz9LRDYucNn5kdww0mVKBVNHDwR4/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39503
in INTERNATIONAL POLYMER PROCESSING > Vol. 38, N° 2 (2023) . - p. 225-232[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24121 - Périodique Bibliothèque principale Documentaires Disponible Effect of itaconic acid on the wet scrub resistance of highly pigmented paints for architectural coatings / Mauricio Pinheiro de Oliveira in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 4 (07/2011)
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Titre : Effect of itaconic acid on the wet scrub resistance of highly pigmented paints for architectural coatings Type de document : texte imprimé Auteurs : Mauricio Pinheiro de Oliveira, Auteur ; Caroline Reggiani Silva, Auteur ; Lilia Müller Guerrini, Auteur Année de publication : 2011 Article en page(s) : p. 439-447 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Itaconique, Acide
Latex
Pigments
Polymérisation en émulsion
Résistance aux frottements humides
RevêtementsTags : 'Latex fonctionnalisé' 'Résistance à la friction' 'Acide itaconique' 'Polymérisation en émulsion' 'Peintures hautement pigmentées' Index. décimale : 667.9 Revêtements et enduits Résumé : This study investigates the influence of carboxylic monomers, such as itaconic acid (IA), on the colloidal properties of the latexes made by semi-continuous emulsion copolymerization of styrene (STy) with n-butyl acrylate (BA). A number of copolymerization runs were carried out with different IA concentrations. The effect of functional monomer on the overall conversion, the colloidal properties of the latexes, and the distribution of the carboxylic groups (buried, particle surface and aqueous phase) were examined. The carboxylic groups present in the latexes were analyzed using conductimetric and potentiometric titrations. The behavior of the IA on the wet scrub resistance of highly pigmented paints for architectural coatings was examined and correlated with the distribution of the carboxylic groups. The results obtained showed that the properties of highly pigmented paints are greatly dependent on the amount and distribution of the carboxylic groups. The carboxylic acid distributed in the aqueous phase has a strong influence on the wet scrub resistance and on the characteristics of the final products. Note de contenu : EXPERIMENTAL : Materials - Polymerization - Composition and paint formulation
CHARACTERIZATIONS : Particle size analysis - Viscosity and pH - Coagulum formation - Freeze-thaw stability - Carboxylic group distribution - Web scrub test - Optical property
RESULTS AND DISCUSSION : Overall conversion and particle size - Distribution of carboxyl groups - Scrub resistance of dried paint filmDOI : 10.1007/s11998-010-9317-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9317-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12131
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 4 (07/2011) . - p. 439-447[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 013158 - Périodique Bibliothèque principale Documentaires Disponible