Adsorption in latex paints in relation to some of the properties of the mill base and the final coating / Margareta Huldén in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 66, N° 836 (09/1994)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 66, N° 836 (09/1994) . - p. 99-105 Titre : Adsorption in latex paints in relation to some of the properties of the mill base and the final coating Type de document : texte imprimé Auteurs : Margareta Huldén, Auteur ; E. Sjöblom, Auteur ; A. Saarnak, Auteur Année de publication : 1994 Article en page(s) : p. 99-105 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acide polyacrylique Agents dispersants (chimie) Brillance (optique) Dioxyde de titane Epaississants Humidité -- Absorption hydroxyéthylcellulose Pigments inorganiques Revêtements -- Propriétés optiques:Peinture -- Propriétés optiques Revêtements en phase aqueuse:Peinture en phase aqueuse Rhéologie Surfactants Index. décimale : 667.9 Revêtements et enduits Résumé : The rheological properties, gloss, hiding power, and water absorption of some model latex paints were analyzed in terms of the adsorption of surfactants, dispersing agent, and thickener onto the latex and pigment particles. Special attention was paid to the order of addition of poly(acrylic acid) and ethyl(hydroxyethyl) cellulose, because this has an effect on the adsorption of the polymers onto the TiO2 pigment. The order of addition also affects the rheological properties of the mill base dispersion and the gloss of the paint. The gloss was also affected by the surfactant used to stabilize the latex. Higher gloss was obtained using a nonionic surfactant than with an anionic surfactant Note de contenu : - PAINT INGREDIENTS-ADSORBENTS AND ADSORBATES - ADSORPTION : Adsorption on the latex particles - Adsorption on the TiO2 pigment - CHARACTERIZATION OF PAINTS-METHODS : Paint formulations - Measurement of rheological properties - Characterization of the final coating - RESULTS AND DISCUSSION : Rheological properties of mill base formulations - Rheological properties of the paints - Properties of the final coatings Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18705 [article]

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Application of nonionic gemini aliphatic polyurethane surfactant for improving the performance of vegetable tanned leather / Shuangquan Lai in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 11 (11/2019)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIV, N° 11 (11/2019) . - p. 403-412 Titre : Application of nonionic gemini aliphatic polyurethane surfactant for improving the performance of vegetable tanned leather Type de document : texte imprimé Auteurs : Shuangquan Lai, Auteur ; Yong Jin, Auteur ; Liangjie Shi, Auteur ; Shenghua Wang, Auteur ; Heng Yang, Auteur Année de publication : 2019 Article en page(s) : p. 403-412 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acide polyacrylique Agents de tannage Collagène Cuirs et peaux -- Analyse Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux -- Propriétés organoleptiques Morphologie (matériaux) Photostabilité Polymères -- Synthèse Polymères aliphatiques Retannage Surfactants Surfactants -- Synthèse Tannage végétal Température de retrait Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Vegetable tanned leathers with good embossing, air permeability, natural look and pleasing firm handle properties have applied in many goods with multiple uses. However, the performances of vegetable tanned leathers still need a further improvement. In this work, a kind of nonionic gemini aliphatic polyurethane surfactants (GPUs) with different hydrophobic chain lengths as a retanning agent combined with polyacrylic acid (PAA) for condensed tannin tanned leathers to improve their performances. The effects of the alone or combined use of the PAA and GPU, the hydrophobic chain length of GPU, and the offer percentage of retanning agent were studied by evaluating the organoleptic properties, shrinkage temperature, mechanical properties of the obtained leathers. The best performance was found in the leather retanned with PAA and 12-GPU-550 complex retanning agent, and the mechanical properties of leather could be improved when the total offer percentage was controlled at 4 wt%. Moreover, the collagen fibers morphologies and lightfastness properties of leathers retanned with different retanning agents were investigated. The results showed that the total color difference ΔE and the yellowness index Δb decreased significantly with the introduction of 12-GPU-550, and the leather retanned with PAA and 12-GPU-550 complex retanning agent showed the lowest value of ΔE, demonstrating that the lightfastness properties were improved significantly. Therefore, it was an attractive way to combine use of PAA and 12-GPU-550 as complex retanning agent, which can improve the mechanical and lightfastness properties of vegetable tanned leathers simultaneously. Note de contenu : - MATERIALS AND METHODS : Materials - Synthesis of polyacrylic acid (PAA) - Synthesis of nonionic gemini aliphatic polyurethane surfactants (GPUs) - Application of the synthesized retanning agents - The organoleptic and physical mechanical properties of leathers - Scanning Electron Microscopy analysis of leathers - Light fastness properties of leathers - RESULTS AND DISCUSSION : Effects of different retanning agents on the properties of leathers - Effect of the hydrophobic chain length of GPU on the properties of leathers - Effect of the offer percentage of complex retanning agent on the properties of leathers - SEM analysis of leathers - Effects of retanning agents on the lightfastness properties of leathers En ligne : https://drive.google.com/file/d/1ajQdsq8W9LW8sFu6kytH1lIoq_J-RMzI/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33252 [article]

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Application of Y-shaped polyurethane and polyacrylic acid as a complex retanning agent in aldehyde-tanned goat leather / Shuangquan Lai in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 11 (11/2017)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXII, N° 11 (11/2017) . - p. 367-376 Titre : Application of Y-shaped polyurethane and polyacrylic acid as a complex retanning agent in aldehyde-tanned goat leather Type de document : texte imprimé Auteurs : Shuangquan Lai, Auteur ; Yong Jin, Auteur ; Hanping Li, Auteur ; Lei Zhang, Auteur ; Xin Yin, Auteur Année de publication : 2017 Article en page(s) : p. 367-376 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acide polyacrylique Copolymères -- Synthèse Copolymères séquencés Cuirs et peaux -- Analyse Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux -- Propriétés organoleptiques Cuirs et peaux -- Propriétés physiques Cuirs et peaux de chèvres Glutaraldéhyde Morphologie (matériaux) Polymères amphiphiles Polyuréthanes Retannage Tannage organique Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : A kind of Y-shaped amphiphilic block polyurethane copolymers (PUGs) with different molecular weights were successfully synthesized to be used as retanning agent combined with polyacrylic acid (PAA) for modified glutaraldehyde tanned goatskin. The structures of resulting products were characterized by FTIR, and the molecular weights of products were measured with GPC. The application performances were investigated by measuring the organoleptic and physical mechanical properties of resulting leathers according to the alone or combined use of PUG and PAA, the molecular weight of PUG, and the offer percentage of retanning agent. The best performance was found in the leather retanned by PUG750 and PAA complex retanning agent at the total offer percentage of 4 wt%. Finally, the free formaldehyde contents in the leathers retanned with 4 wt% PUG750 and PAA at different pH conditions were analyzed with acetyl acetone colorimetric method. The mechanical properties as well as the fibers morphologies of the experimental and control groups were also investigated. The results demonstrated that when the pH value at the later stage of retanning process was controlled at 4.0 or 3.0, the free formaldehyde content was significantly reduced by 20.3% or 38% respectively ; and the physical mechanical properties of leathers were also very excellent to meet the performance requirements of goatskin garment leathers. According to these results, the method for using PUG and PAA as a complex retanning agent might be a good choice in chrome-free tanning process. Note de contenu : - MATERIALS AND METHODS : Materials - Synthesis of Y-shaped amphiphilic block polyurethane copolymers (PUGs) - Synthesis of polyacrylic acid (PAA) - Fourier Transform Infrared Spectra (FTIR) - Gel permeation chromatography (GPC) - Application of polyurethanes and polyacrylic acid - Analysis of leather properties - Scanning electron microscopy analysis - Determination of free formaldehyde contents in leathers - RESULTS AND DISCUSSION : Synthesis of polyurethane copolymers and polyacrylic acid - Effect of different retanning agents on the organoleptic and physical properties of leathers - Effect of the molecular weight of PUG on the organoleptic and physical properties of leathers - Effect of the amount of complex retanning agent on the organoleptic and physical properties of leathers - Application of the complex retanning agent under different pH conditions En ligne : https://drive.google.com/file/d/1n0hhgDSLoOspbiCVezGLJhDkXewQevzZ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29395 [article]

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L'autoconstruction de films de polyélectrolytes : approche morphogénique / Fouzia Boulmedais in L'ACTUALITE CHIMIQUE, N° 384 (/04/2014)  

[article]  inL'ACTUALITE CHIMIQUE > N° 384 (/04/2014) . - p. 14-20 Titre : L'autoconstruction de films de polyélectrolytes : approche morphogénique Type de document : texte imprimé Auteurs : Fouzia Boulmedais, Auteur Année de publication : 2014 Article en page(s) : p. 14-20 Note générale : Bibliogr. Langues : Français (fre) Catégories : Acide polyacrylique Chimie click Couches minces Electrochimie Polyélectrolytes Polyéthylèneimine Surfaces fonctionnelles Systèmes auto-assemblés Index. décimale : 668.9 Polymères Résumé : La fonctionnalisation de surface par voie ascendante (« bottom-up »), utilisant le principe d’autoassemblage, est considérée comme la voie la plus appropriée pour obtenir des matériaux dits « intelligents ». Les multicouches de polyélectrolytes, systèmes auto-assemblés par adsorptions successives de polycations et polyanions, peinent à trouver des applications concrètes en raison de leur fragilité mécanique et du temps nécessaire à leur assemblage. Afin d’améliorer ces deux difficultés, nous avons développé l’autoconstruction de films polymères par approche morphogénique. Ces films sont à base de polymères portant des groupements alcynes et azotures réticulés par une réaction click catalysée par les ions Cu(I) obtenus par voie électrochimique. Cette approche permet l’autoconstruction d’un film confinée à la surface de l’électrode et caractérisée par la présence en solution de l’ensemble des constituants. Note de contenu : - Vers l'autoconstruction de films - Démonstration du concept d'autoconstruction de films - Influence des paramètres de construction - Traitement post-construction : élimination du cuivre - Réponse des films à un changement de pH En ligne : https://new.societechimiquedefrance.fr/numero/lautoconstruction-de-films-de-poly [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21028 [article]

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Characterization of yield stress and slip behaviour of skin/hair care gels using steady flow and LAOS measurements and their correlation with sensorial attributes / S. Ozkan in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 34, N° 2 (04/2012)  

[article]  inINTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 34, N° 2 (04/2012) . - p. 193-201 Titre : Characterization of yield stress and slip behaviour of skin/hair care gels using steady flow and LAOS measurements and their correlation with sensorial attributes Type de document : texte imprimé Auteurs : S. Ozkan, Auteur ; T. W. Gillece, Auteur ; L. Senak, Auteur ; David J. Moore, Auteur Année de publication : 2012 Article en page(s) : p. 193-201 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acide polyacrylique Analyse sensorielle Caractérisation Copolymères Cosmétiques Epaississants Gels -- Emploi en cosmétologie Maléique, Acide Polyvinyl éther Polyvinylpyrrolidone Rhéologie Tags : 'Gel  main/cheveux'  'Grande  amplitude  oscillatoire'  Rhéologie  'Corrélation  sensorielle'  'Limite  élasticité' Index. décimale : 668.5 Parfums et cosmétiques Résumé : Gels made with three different polymers widely used as rheology modifiers in cosmetic formulations (cross-linked poly(acrylic acid), cross-linked poly(maleic acid-alt-methyl vinyl ether) copolymer and cross-linked poly(acrylic acid-co-vinyl pyrrolidone) copolymer) were characterized by rheological and sensory evaluation methods to determine the relationship between sensorial perception and corresponding rheological parameters. Both conventional rheological characterization methods and a more recent method, Fourier Transform Rheology with Large Amplitude Oscillatory Flow data (LAOS), were utilized to characterize the material with and without wall slip. Sensorial analyses were implemented in vivo to evaluate the perceived ease of initial and rub-out spreadability, cushion, pick-up and slipperiness attributes of the gels. Results were statistically analysed by both variance (ANOVA) and principle component analysis (PCA). Sensorial panel testing characteristics discriminated the three materials, and PCA analyses revealed that sensory attributes could be well predicted by rheological methods. Rheological experiments, without wall slip, revealed that gel strength in the linear viscoelastic region (LVR) and yield stress of these materials are similar, but exhibit significantly different wall slip and thixotropy behaviour in the low shear rate region under wall slip conditions. Above the critical shear rate, which corresponds to the yield stress, all tested materials did not slip and behaved as conventional, shear thinning polymeric fluids. In particular, the rheological parameters and sensorial perception of the 1% cross-linked vinyl pyrrolidone/acrylic acid copolymer were significantly affected by wall slip and/or thixotropy-related shear banding phenomena. Note de contenu : - MATERIALS AND METHODS : Rheological characterization (dynamic oscillatory measurements - Steady torsional flow experiments - Continuous shear rate ramp tests - extensional tests) - Sensory evaluation - Data analysis - RESULTS AND DISCUSSION : Rheological characterization (steady torsional flow experiment - Continuous stress of shear rate ramp measurements to establish the shear rate dependency of shear stress and viscosity at different gap openings - Extensional tests - Sensory evaluation - Correlation of sensory ratings with conventional rheological parameters - Correlation of sensory ratings with large amplitude oscillaroty shear flow (LAOS) parameters (Chebyshev coefficients) DOI : 10.1111/j.1468-2494.2012.00702.x En ligne : https://onlinelibrary.wiley.com/doi/10.1111/j.1468-2494.2012.00702.x Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14392 [article]

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Cleaner chrome tanning - technology of chrome-reduced tanning without salt, pickling and short procedure / Luo Jian-Xun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 6 (11-12/2019)  

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Contribution à l'étude des complexes Cr3+ - acide polyacrylique et du système Cr3+ - acide polyacrylique-collagène / Abdessatar Toumi / 1984

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Effect of histological feature of leather on acrylic resin retanning / Ying Song in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 3 (05-06/2018)  

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Effect of prepolymerization of acrylic acid under high gravity on the properties of acrylic resin retanning agent / Xin Shu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 11 (11/2019)  

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Effects of PAA on the different scales of leather structure / Zou Xianglong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 5 (09-10/2018)  

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Effects of polyacrylic acid on the structure of collagen fibre / Zou Xianglong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 98, N° 4 (07-08/2014)  

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Enhancement of the Mie scattering effect using floatstone-like TiO2 spherical micropigment / Tomohiro Shirosaki in COLORATION TECHNOLOGY, Vol. 133, N° 3 (06/2017)  

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Enzymatic synthesis of sodium alginate-g-poly (acrylic acid) grafting copolymers as a novel printing thickener / Nan Zhang in COLORATION TECHNOLOGY, Vol. 138, N° 3 (06/2022)  

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Exfoliated graphite/acrylic composite film as hydrophobic coating of 3D-printed polylactic acid surfaces / Bryan B. Pajarito in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 4 (07/2019)  

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La formulation des électrodes composites des batteries Li-ion / Bernard Lestriez in L'ACTUALITE CHIMIQUE, N° 464 (07-08/2021)

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High-salt-tolerance anticorrosion coating with salt-enabled self-healing ability from branched polyethyleneimine and poly(acrylic acid) / Jiajia wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 3 (05/2019)  

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Implementing DOE to study the effect of paint application parameters, film build, and dehydration temperature on solvent pop / Lindita Prendi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 1 (03/2008)  

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Nanosilver/hyperbranched polyester (HBPE): synthesis, characterization, and antibacterial activity / C. Kavitha in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 5 (09/2013)  

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Polyacrylic acid (PAA)/Zn2+ complex films fabricated on steel substrate via one-step assembly for corrosion protection / Ru Yan in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 1 (01/2024)  

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Preparation and drug release properties of curcumin-loaded PVA-PAA nanofibers / Shi Jiayin in CHEMICAL FIBERS INTERNATIONAL, Vol. 72, N° 3 (09/2022)  

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