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Surface tension modifiers based on ethoxy silicone polymers in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 210, N° 4666 (12/2020)
[article]
Titre : Surface tension modifiers based on ethoxy silicone polymers Type de document : texte imprimé Année de publication : 2020 Article en page(s) : p. 42-43 Langues : Anglais (eng) Catégories : Mouillage (chimie des surfaces)
polymère éthoxy silicone
Revêtements -- Additifs
Revêtements organiques
Tension superficielleIndex. décimale : 667.9 Revêtements et enduits Résumé : We introduces two additives based on ethoxylated silicone polymers.
I its range of products, Siliconi Commerciale SpA includes modifiers, such as Siltop 715, an additive with substrate wetting properties and Siltop 750, a surface levelling agent with rather good slipping properties.
Both additives are based on ethoxylated silicone polymers.
The chemical composition is very important as it determines its characteristics and properties ; the polyether part serves to give the polymer the right/expected compatibility in the coating systems and with the organic polymers, which they consist of, while the silicone chain guarantees the strong surface activity and determines the specific properties of the polymer, substrate wetting or levelling agent.
Surface tension modifying additives are often useful and, in some cases, fundamental so that a coating system, especially water-based ones, can wet and therefore cover homogeneously and uniformly the surface to be painted and to ensure that the appearance of the dry paint film has the desired characteristics of brilliance and uniformity of colour or opacity.En ligne : https://drive.google.com/file/d/1hEaweh8UZVddXf3RHp8mX5kBMHeF20BZ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36745
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 210, N° 4666 (12/2020) . - p. 42-43[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23119 - Périodique Bibliothèque principale Documentaires Disponible Surface tension studies in colloidal unimolecular polymers / Ashish Zore in COATINGS TECH, Vol. 18, N° 2 (02/2021)
[article]
Titre : Surface tension studies in colloidal unimolecular polymers Type de document : texte imprimé Auteurs : Ashish Zore, Auteur ; Michael van de Mark, Auteur Année de publication : 2021 Article en page(s) : p. 24-31 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alliages polymères -- propriétés mécaniques
Caractérisation
Granulométrie
Latex
Poids moléculaires
Polycarboxylates
Polymères -- Synthèse
Polymères unimoléculaires colloïdaux
Polysulfones
Polyuréthanes
Tension superficielleIndex. décimale : 668.9 Polymères Résumé : Colloidal unimolecular polymer particles, or CUPs, are true nanoscale charged particles of size less than 10 nm that are made by a simple method that allows for preparation of additive-free, zero-volatile organic content (VOC) and stable dispersions. These CUP particles are made from a single polymer chain containing a well-balanced number of hydrophobic and hydrophilic units (Figure 1). The polymer chain is transformed into a CUP particle because the polymer-polymer interaction exceeds polymer-solvent interaction during the addition of water to the polymer in dilute solution in a low-boiling, water-loving solvent, resulting in collapse of the chain to form a particle.
This process is like formation of micelles, or the water reduction process in water-reducible coatings.1 The charged groups on the surface of the particles provide stability and prevent aggregation due to ionic repulsion. The CUP suspension is free of any additives or surfactants as it contains only charged particles, water, and counterions. Due to the process simplicity, it is easy to control the particle size, charge density on the surface, and composition of these particles.2 CUP particles can also be a good model material for study of protein due to similarities in their size. They can also have potential applications in the field of coatings, drug delivery, catalyst matrix, etc.
CUPs have a great potential in the field of coatings as demonstrated in several publications by Van De Mark et.al. They can be used as coating resin in conjunction with latex and polyurethane dispersions (PUDs) and can be cured with an aziridine3 or a melamine crosslinker4. CUPs with sulfonic acids as the charged stabilizing group can be used as a catalyst for waterborne curing such as acrylic-melamine systems.5 CUPs with amine functional groups CUPs with amine functional groups have been synthesized and used as a crosslinker for waterborne epoxy coatings.6 The CUP particles are hydrated with a layer of water around them, often referred to as surface or bound water, which is non-freezable.Note de contenu : - EXPERIMENTAL : Synthesis of polymer and water reduction - Characterization
- RESULTS AND DISCUSSION : Characterization of polymers - Particle size analysis - Equilibrium surface tension behavior
- Fig. 1 : Formation of CUPs
- Fig. 2 : Surface tension vs concentration behavior for PUD1, PUD2 (solid triangles) and PUD2 diluted to different concentration using 12.9% NMP-water mixture instead of water - Dynamic surface tension behavior
- Fig. 3 : Surface tension vs concentration behavior for polymer 2 (CUPs), PUD1 and latex
- Fig. 4 : Equilibrium surface tension of the carboxylate CUPs (polymers 1 and 2), sulfonate CUPs (polymer), and QUAT-CUPs (polymer 4)
- Fig. 5 : Dynamic surface tension behavior of the latex, PUD1, and CUPs at different surface ages at 3% solids
- Fig. 6 : Dynamic surface tension behavior of the carboxylate (polymer 2), sulfonate (polymer3), and QUAT (polymer 4) CUPs at different surface ages
- Table 1 : Acid number, densities, and molecular weights of the copolymers
- Table 2 : Molecular weights and particle size of the CUPs
- Table 3 : Fitting parameters for dynamic surface tension vs surface age at 0.5 mol/m3 and diffusion coefficient (Dc) at 25°CEn ligne : https://drive.google.com/file/d/1Z_Mny6LNFkOkYOVQS4cTyTGyEAqVV8xm/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35256
in COATINGS TECH > Vol. 18, N° 2 (02/2021) . - p. 24-31[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22580 - Périodique Bibliothèque principale Documentaires Disponible 22581 - Périodique Bibliothèque principale Documentaires Disponible Surfactants in pressure sensitive adhesives / Virendra V. Shah in ADHESIVE TECHNOLOGY, Vol. 15, N° 3 (09/1998)
[article]
Titre : Surfactants in pressure sensitive adhesives Type de document : texte imprimé Auteurs : Virendra V. Shah, Auteur ; Donald A. Werkema, Auteur Année de publication : 1998 Article en page(s) : p. 15-19 Langues : Anglais (eng) Catégories : Adhésifs sensibles à la pression
Diol acétylénique
Essais (technologie)
Essais d'adhésion
Formulation (Génie chimique)
Mouillage (chimie des surfaces)
Mousse (chimie)
Surfactants
Tension superficielle
Tétraméthyl decyne diolIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : The proper choice and level of surfactant is critical to the adhesive formulator to provide the required coating characteristics without excessive foaming. Note de contenu : - Surface tension
- Acetylenic diol surfactant chemistry
- Hydrophilic/hydrophobic structure
- Surfactants for pressure sensitive and laminating adhesives
- Formulations
- Test methods
- Results
- Substrate wetting
- Foam control
- Adhesive system formulations
- Adhesive properties
- FDA compliances
- Fig. 1 : Tetramethyldecynediol
- Fig. 2 : PSA foam generation
- Fig. 3 : 24 hours dry PVC/cloth peel strength
- Fig. 4 : Wet PVC/cloth peel strength
- Table 1 : Surface tension performance of various surfactant chemistries (0.1 % concentration of active material in demi water)
- Table 2 : Effect of structures ABA vs BAB vs AB (A = hydrophobe) ; B = hydrophile)
- Table 3 : effect of branched chain compared with linear hydrophobe (0.1 % concentration of active in demi water)
- Table 4 : Adhesive formulation properties as a function of coater type
- Table 5 : Pressure sensitive adhesive formulation
- Table 6 : Wet laminating adhesive formulationPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37381
in ADHESIVE TECHNOLOGY > Vol. 15, N° 3 (09/1998) . - p. 15-19[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001980 - Périodique Bibliothèque principale Documentaires Disponible Synergies of hydrophobic polymers and surfactants on surface activity and cleaning performance / M.-E. Chateau in SOFW JOURNAL, Vol. 133, N° 4 (04/2007)
[article]
Titre : Synergies of hydrophobic polymers and surfactants on surface activity and cleaning performance Type de document : texte imprimé Auteurs : M.-E. Chateau, Auteur ; Michael Lang, Auteur ; Markus Antonietti ; K. Rodrigues ; A. M. Carrier Année de publication : 2007 Article en page(s) : p. 76-82 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Détergents
Dodécylbenzènesulfonate
Ethoxylate d'alcool
Formulation (Génie chimique)
Hydrophobie
Polycarboxylates
Tension superficielleIndex. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Detergency is the removal of soil through a complex process involving interactions between the wash liquor, the soil and the substrate. In this paper, we describe the results of our preliminary investigations into polymer-surfactant interactions, focusing on primary detergency in laundry applications. We have studied the interaction between surfactants typically used in laundry formulations and hydrophobically modified polycarboxylate polymers. These polymers are a series of copolymers of acrylic acid and styrene with varying molar amounts of the styrene hydrophobe. The effect of a partial replacement of the surfactant by these polymers was characterized by the static surface tension measurements. These measurements predict that these polymers should aid in primary detergency. Primary detergency tests show that these polymers in combination with the anionic surfactant sodium-dodecylbenzenesulfonate (LAS) improve detergency when the LAS level is below its critical micelle concentration (CMC). Even more remarkable is the oily soil release improvement with the non-ionic alcohol ethoxylate (AE) surfactant, C13-15,7 E0, even above the CMC. This is possibly due to a change in micelle shape, which favours spontaneous emulsification, and subsequent soil release by mechanical action. Note de contenu : - MATERIALS AND METHODS : Hydrophobically modified polycarboxylate polymers - Surfactants : LAS and AE (7 EO) - Physicochemical measurements - Primary detergency test protocol for European was conditions
- RESULTS AND DISCUSSION : Polymer interactions with sodium-dodecylbenzenesulfonates (LAS) - Polymer interactions with an alcohol ethoxylate non ionic surfactantPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30984
in SOFW JOURNAL > Vol. 133, N° 4 (04/2007) . - p. 76-82[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20074 - Périodique Bibliothèque principale Documentaires Disponible Synthesis and characterization of a new cationic galactolipid with carbamate for gene delivery in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 47, N° 5/2010 (09-10/2010)
[article]
Titre : Synthesis and characterization of a new cationic galactolipid with carbamate for gene delivery Type de document : texte imprimé Année de publication : 2010 Langues : Anglais (eng) Catégories : Caractérisation
Carbamates
Composés organiques -- Synthèse
Glycolipides
Surfactants
Tension superficielleIndex. décimale : 668.1 Agents tensioactifs : savons, détergents Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9955
in TENSIDE, SURFACTANTS, DETERGENTS > Vol. 47, N° 5/2010 (09-10/2010)[article]Réservation
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PermalinkSynthesis and properties of lactobionamide-based polysiloxane surfactant / L. Wang in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 48, N° 4/2011 (07-08/2011)
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