Accueil
Catégories
Ajouter le résultat dans votre panier Affiner la recherche
Etendre la recherche sur niveau(x) vers le bas
A green substrate wetting alternative / Peter Sheridan in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 18, N° 2 (02/2011)
[article]
Titre : A green substrate wetting alternative Type de document : texte imprimé Auteurs : Peter Sheridan, Auteur Année de publication : 2011 Article en page(s) : p. 17-19 Langues : Américain (ame) Catégories : Additifs
Chimie écologique
Colles:Adhésifs
Formulation (Génie chimique)
Mouillage (chimie des surfaces)
Tension superficielleIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : A new additive offers optimum substrate wetting performance while enabling the formulation of low-VOC aqueous adhesives products. Note de contenu : - Enhancing performance
- Reducing surface tension
- Peel strength testEn ligne : http://www.adhesivesmag.com/Articles/Green_Formulation/BNP_GUID_9-5-2006_A_10000 [...] Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10840
in ADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 18, N° 2 (02/2011) . - p. 17-19[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 012832 - Périodique Bibliothèque principale Documentaires Disponible High-performance sulphate-free cleansers : Surface activity, foaming and rheology / Kelly Yorke in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 43, N° 6 (12/2021)
[article]
Titre : High-performance sulphate-free cleansers : Surface activity, foaming and rheology Type de document : document électronique Auteurs : Kelly Yorke, Auteur ; Andrei Potanin, Auteur ; Suzanne Jogun, Auteur ; Andre Morgan, Auteur ; Hongwei Shen, Auteur ; Samiul Amin, Auteur Année de publication : 2021 Article en page(s) : p. 636-652 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alkyl oléfine sulfonate
Alkyl polyglycosides
Moussage (chimie)
Produits nettoyants
Rhéologie
Rhéomètres
Sulfates -- Produits de remplacement
Surfactants
Tension superficielle
ViscoélasticitéIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : The main objective of this paper is to analyse the composition of a sulphate-free binary or ternary surfactant system with alkyl olefin sulfonate (AOS), alkyl polyglucoside (APG) and lauryl hydroxysultaine (Sultaine). The composition was optimized by observing critical parameters such as surface activity and rheological properties while varying the concentration of APG in a ternary system, varying the ratio of AOS and Sultaine in a binary system and studying the effect of sodium chloride addition. The experimental results can provide an alternative, sulphate-free surfactant system to replace the common system containing sodium laureth sulfate (SLES) and cocamidopropyl betaine (CapB), without compromising on the parameters previously mentioned.
- Methods : A DuNouy Ring was utilized on a tensiometer to measure the surface tension of the samples. To observe foaming abilities of samples, a visual foaming study was conducted and recorded by taking pictures. A TA instruments mechanical rheometer was used to measure the viscosity.
- Results : Studying the effect of APG concentration on surface tension illustrated that as APG concentration decreases, surface tension decreases as well. The minimum surface tension was found to be 26.587 for 7.5 wt.% AOS and 7.5 wt.% Sultaine. When the ratio between AOS and Sultaine changed, the 1:1 system produced the lowest surface tension value again. As the concentration of AOS decreased in the ratio, the surface tension increased. When the ratio was held constant, and APG was introduced into the system, the systems containing APG had higher surface tension values compared with the systems with the same ratios but did not have APG added. As the concentration of salt increased, the surface tension decreased for AOS, increased for the binary mixture and had no effect on Sultaine. Foaming has a direct correlation with surface tension so a decrease in surface tension led to better foaming abilities; therefore, the 1:1 ratio of AOS:Sultaine had the best foaming qualities. The AOS/Sultaine system exhibited Maxwellian behaviour, suggesting the presence of worm-like micellar structures. As the concentration of APG increased, the viscosity decreased and at a concentration of 2.5 wt.% AOS, 5 wt.% APG and 7.5 wt.% Sultaine, the system changed from shear thinning non-Newtonian fluid to Newtonian. Varying the ratio of AOS:Sultaine in the binary system, showed as the ratio changed, the viscosity decreased, and at a ratio of 1:3 AOS:Sultaine, the system was primarily Newtonian. As the ratio remained constant and APG was added, the viscosity continued to decrease and the 1:3 ratio was completely Newtonian. The addition of salt had no effect on the viscosity of Sultaine, but the viscosity of AOS increased at a salt concentration of 2 wt.%. The binary mixture saw as the concentration of salt increased, the viscosity profile decreased, even though the system remained non-Newtonian and shear thinning.
- Conclusion : The surface activity and rheological study of the sulfate-free surfactant systems unveil a strong synergistic interaction between AOS and Sultaine specifically at a ratio of 1:1 resulting in high surface activity and corresponding good foaming and formation of entangled wormlike micelles resulting in excellent viscosity build in the system. If introducing a biobased surfactant into this system is desired without completely compromising the performance properties, the ternary surfactant system 4.5 wt.% AOS, 3 wt.% APG and 7.5 wt.% Sultaine should be considered optimal. Any further addition of APG or changing the ratio results in detrimental reductions of all performance controlling physio-chemical parameters.Note de contenu : - MATERIALS AND METHODS : Materials - Sample preparation - Surface tension - Foaming - Mechanical rheology
- RESULTS AND DISCUSSION : Surface activity : Surface tension at air–water interface and impact on foaming - Rheological properties
- Table 1 : Composition of Samples, Varying the Amount of APG present
- Table 2 : Compositions of samples, varying the ratio of AOS:Sultaine
- Table 3 : Compositions of samples, varying the amount of salt presentDOI : https://doi.org/10.1111/ics.12740 En ligne : https://drive.google.com/file/d/1cPvP9X2TckezNRY1s0pXlWixQ-eDmdd7/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37046
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 43, N° 6 (12/2021) . - p. 636-652[article]High performance wetting agents based on acetylenic glycol chemistry / Virendra V. Shah in ADHESIVES AGE, Vol. 41, N° 9 (09/1998)
[article]
Titre : High performance wetting agents based on acetylenic glycol chemistry Type de document : texte imprimé Auteurs : Virendra V. Shah, Auteur Année de publication : 1998 Article en page(s) : p. 36-44 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésifs en phase aqueuse
Agents mouillants
Etanchéité
Formulation (Génie chimique)
Glycol acétylénique
Rhéologie
Surfactants
Tension superficielleIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : High performance surfactants based on acetylenic glycol chemistry offer many benefits in waterborne adhesives. These surfactants provide excellent dynamic wetting with low foam, excellent shear stability, minimum impact on adhesive properties and ease of handling without gel formation. These surfactants provide excellent wetting to plastic film and other low energy substrates. In addition, these surfactants also offer wide FDA compliance. Note de contenu : - Waterborne adhesives
- Substrate wetting agent
- Dynamic surface tension effects
- Acetylenic glycol-based surfactant chemistry and performance
- Surfactant's role in waterborne adhesives
- Formulations
- Test methods
- RESULTS : Viscosity response and shear stability - Equilibrium and dynamic surface tension - Water resistance - Substrate wetting - Foam control
- Adhesive system formulations
- Adhesive properties
- FDA complianceEn ligne : https://drive.google.com/file/d/1dLaDoe1USCc-gg1QWpoTs7BeAGg_fYba/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20319
in ADHESIVES AGE > Vol. 41, N° 9 (09/1998) . - p. 36-44[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001437 - Périodique Bibliothèque principale Documentaires Exclu du prêt Hyperbranched polyesters as potential additives to control the surface tension of polymers / K. Grundke in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B2 (05/2005)
[article]
Titre : Hyperbranched polyesters as potential additives to control the surface tension of polymers Type de document : texte imprimé Auteurs : K. Grundke, Auteur ; P. Kierkus ; M. Kreitschamann, Auteur ; B. Voit, Auteur ; F. Simon, Auteur ; D. Pleul, Auteur ; S. Michel, Auteur ; A. Ziemer, Auteur ; M. Azizi, Auteur Année de publication : 2005 Article en page(s) : p. 101-106 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alliages polymères
Polyesters
Polymères ramifiés
Spectroscopie de photoélectrons
Tension superficielleIndex. décimale : 667.9 Revêtements et enduits Résumé : In this study, the authors report on the potential application of hyperbranched polymers as surface tension modifiers in linear polymers or compatibilisers in polymer blends. The influence of hyperbranched polyesters (HBP) with different functional end groups on the surface tension of mixtures with an oligo(ester diol) was investigated. The surface tension of the pure components and of the mixtures was studied within a temperature range of 20°C up to 100°C. The results indicate that the surface tension of the pure HBPs strongly depends on the functionality of the end-groups. The modification of the hydroxyl end groups by short alkyl chains (methyl, tert-butyl) reduced the surface tension, depending on the degree of functionalisation. The surface tension of mixtures could be considerably decreased using 1% HBP that was partially substituted with short alkyl chains. In this case, the modified HBPs acted as surface active agents. On the molecular level, the enrichment of the modified HBP in the surface region was proven by XPS (x-ray photoelectron spectroscopy) measurements. DOI : 10.1007/BF02699540 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699540.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5422
in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 88, B2 (05/2005) . - p. 101-106[article]Réservation
Réserver ce document
Exemplaires (2)
Code-barres Cote Support Localisation Section Disponibilité 001966 - Périodique Bibliothèque principale Documentaires Disponible 002343 - Périodique Bibliothèque principale Documentaires Disponible Hyperbranched polymer surfactant : synthesis, characterization and surface tension activity / Ren Longfang in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 3 (Année 2021)
[article]
Titre : Hyperbranched polymer surfactant : synthesis, characterization and surface tension activity Type de document : texte imprimé Auteurs : Ren Longfang, Auteur ; Zheng Tang, Auteur ; Taotao Qiang, Auteur ; Guoguo Zhang, Auteur Année de publication : 2021 Article en page(s) : 11 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Chlorure d'acide gras
Concentration micellaire critique
Polymères ramifiés
Surfactants -- Synthèse
Tension superficielleIndex. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : A series of hyperbranched polymer surfactants (HBP-C8, HBP-C12 and HBP-C16) were synthesized by the reaction between hydroxyl-terminated hyperbranched polymers (HBP) and fatty acyl chloride. The structure of obtained hyperbranched polymer surfactant was characterized by FTIR, NMR and GPC. The results showed that the products have amphiphilic structure. The thermal property of the hyperbranched polymer surfactant investigated by DSC and TGA was strongly influenced by the length of end alkyl chain. Surface activity of hyperbranched polymer surfactant was analyzed by surface tension method and UV spectrophotometry, respectively. The results showed that hyperbranched polymer surfactant took on better surface activity, which can effectively reduce the surface tension of the water. The hyperbranched polymer surfactant has a lower critical micelle concentration (CMC) and displays single molecular micellar properties, which can package small hydrophilic molecules in relatively low concentration. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of hyperbranched polymer surfactant - Testing and characterization - Surface tension activity of HBP-C - Critical micelle concentration (CMC) of HBP-C
- RESULTS AND DISCUSSION : Characterization of HBP-C - Optimization of HBP-C - Grafting rate of HBP-C - Thermal properties of HBP-C - Surface tension of HBP-C - CMC of HBP-C
- Table 1 The grafting rate of HBP-C
- Table 2 GPC results of HBP-CDOI : https://doi.org/10.1186/s42825-020-00049-6 En ligne : https://link.springer.com/content/pdf/10.1186/s42825-020-00049-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37473
in JOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 3 (Année 2021) . - 11 p.[article]Influence of additives on interfacial phenomena during film formation of powder coatings / Petra Uhlmann in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 915 (04/2001)
PermalinkInk-jet printing of cotton with natural dyes / Georgios Savvidis in COLORATION TECHNOLOGY, Vol. 130, N° 3 (06/2014)
PermalinkInterfacial phenomena / John Tasman Davies / New York [Etats-Unis] : Academic Press inc. (1961)
PermalinkInterfacial phenomena / John Tasman Davies / Londres [Royaume-Uni] : Academic Press (1961)
PermalinkInterfacial tension properties in biopolymer blends : from deformed drop retraction method (DDRM) to shear elongation rheology-application to blown film extrusion / Khalid Lamnawar in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIII, N° 3 (07/2018)
PermalinkInterfacial tensions, partition coefficients, and interfacial eelasticities : measures for emulsion stability ? / N. Buchavzov in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 44, N° 4/2007 (08-09/2007)
PermalinkInvestigating changes in electrochemical properties when nano-silica is incorporated into an acrylic-based polyurethane clearcoat / Hamed Dastmalchian in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 2 (03/2012)
PermalinkInvestigation of interfacial instabilities with a two-layer slide coating process / Cornelia K. Buerkin in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 5 (09/2017)
PermalinkLeather finishing : Preparation and application of cationic organosilicone/polyurethane micro-emulsion / Shen Yiding in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 3 (05-06/2007)
PermalinkLeveling of a model paint film with ayield stress / D. E. Weidner in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 4 (07/2020)
PermalinkLimitations of classical methods for measuring surface tension in visco-elastic liquids / A. Bochkarev in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 3 (05/2010)
PermalinkLiquid film coating of small molecule OLEDs / Katharina Peters in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 1 (01/2014)
PermalinkLowering the tension / Vicky James in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 197, N° 4510 (03/2007)
PermalinkMatériaux thermoplastiques à base de biopolymère pour leur impression 3D par dépôt de fil fondu / Laurent Chaunier in RHEOLOGIE, Vol. 38 (12/2020)
PermalinkModélisation et simulation numérique de l’étalement goutte fluide sur un plan horizontal / H. Alla in RHEOLOGIE, Vol. 6 (10/2004)
Permalink