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Nucleation of polypropylene homo- and copolymers / Markus Gahleitner in INTERNATIONAL POLYMER PROCESSING, Vol. XXVI, N° 1 (03/2011)
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Titre : Nucleation of polypropylene homo- and copolymers Type de document : texte imprimé Auteurs : Markus Gahleitner, Auteur ; C. Grein, Auteur ; S. Kheirandish, Auteur ; J. Wolfschwenger, Auteur Année de publication : 2011 Article en page(s) : p. 2-20 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Copolymères
Homopolymères
Nanoparticules
Nucléation
Polymères en émulsion
Polymères isotactiques
PolypropylèneIndex. décimale : 668.9 Polymères Résumé : The combination of moderately slow crystal growth at large undercoolings together with the practical absence of sporadic nucleation makes isotactic polypropylene (iPP) an ideal material for controlled nucleation. In this review the different types of nucleating agents – inorganic and organic, particulate and soluble – for the different crystal modifications of iPP (α, β andγ) are presented together with their working mechanism and criteria for activity. The interaction between polymer type, nucleating agent and processing conditions in determining mechanical and optical properties conclude the survey. DOI : 10.3139/217.2411 En ligne : https://drive.google.com/file/d/1jgYSDoQg_eFq53uwTVrg2_LwBBADCp_e/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10978
in INTERNATIONAL POLYMER PROCESSING > Vol. XXVI, N° 1 (03/2011) . - p. 2-20[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012871 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Optimized use of titanium : Reducing the cost of white opacity Type de document : texte imprimé Auteurs : Alan Smith, Auteur Année de publication : 2012 Article en page(s) : p. 52-53 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Argile
Charges (matériaux)
Coût -- Contrôle
Dioxyde de titane
Opacifiants
Polymères en émulsion
Revêtements
SurfactantsIndex. décimale : 667.9 Revêtements et enduits Résumé : Titanium dioxide (TiO2) is a key element for creating whiteness and opacity in paints and coatings. Since 2008, TiO2 costs have riser more than 70 %, and current prices now exceed $1.70 per pound. As a result, paint manufacturers are reviewign their technology options to identify opportunities to reduce TiO2 consumption. This is particularly true in the architectural coatings segment where TiO2 is the largest component of raw materials costs.
How can paint manufacturers leverage this broad technology base to help them reduce the cost of whiteness and opacity ? Before we can answer this, it is important to first understand how TiO2 works.Note de contenu : - Basics of opacity : Refraction of light - Diffraction of light
- OPTIMIZING TIO2 : Dispersants/surfactanst - Clay minerals - Polymer emulsionsEn ligne : https://drive.google.com/file/d/1y9iDTN76IIvm-ojPhm2OuSWsfBAWbveY/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14327
in COATINGS TECH > Vol. 9, N° 3 (03/2012) . - p. 52-53[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13853 - Périodique Bibliothèque principale Documentaires Disponible 13793 - Périodique Bibliothèque principale Documentaires Disponible 15599 - Périodique Bibliothèque principale Documentaires Disponible Optimizing nitroxide-mediated miniemulsion polymerization processes / Michael F. Cunningham in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 1, N° 1 (01/2004)
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Titre : Optimizing nitroxide-mediated miniemulsion polymerization processes Type de document : texte imprimé Auteurs : Michael F. Cunningham, Auteur ; Barkev Keoshkerian, Auteur ; Marcus Lin, Auteur Année de publication : 2004 Article en page(s) : p. 33-39 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Latex
nitroxydes
Polyaddition
Polymères en émulsion
PolystyrèneIndex. décimale : 667.9 Revêtements et enduits Résumé : Living/controlled radical polymerizations provide significant advantages in the control of polymer resin microstructure compared to conventional radical polymerization. Advances in our ability to tailor polymer microstructure will enable improvements in coatings properties and possibly new applications of coating technologies. Adapting living radical polymerizations to heterogeneous media such as aqueous-based miniemulsion polymerization presents several challenges related to maintaining the livingness (the fraction of chains that are still living at the end of polymerization) of the polymer chains and also developing a commercially viable process. We have studied the nitroxide-mediated polymerization of styrene in miniemulsion, with the intent of maintaining a high degree of livingness by balancing the rates of biradical termination and disproportination. We can now achieve > 95 % monomer conversion in less than three hours, while maintaining polydispersities ~1.3. Monomer conversion can be dramatically increased from about 60-95 % by changing the concentration of sodium dodecylbenzenesulfonate (SDBS) surfactant. Conversions in Dowfax 8390 stabilized miniemulsions showed no comparable dependency. Reasons for this potentially commercially important effect are under investigation. DOI : 10.1007/s11998-004-0022-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-004-0022-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3930
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 1, N° 1 (01/2004) . - p. 33-39[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000585 - Périodique Bibliothèque principale Documentaires Disponible Organic fluorosilicone modified polyacrylate emulsion finishing agent / Sui Zhihui in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 4 (07-08/2019)
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Titre : Organic fluorosilicone modified polyacrylate emulsion finishing agent Type de document : texte imprimé Auteurs : Sui Zhihui, Auteur ; San Jinglong, Auteur ; Wang Xu, Auteur ; Zu Bin, Auteur ; Cao Xiangyu, Auteur ; Qiang Xihuai, Auteur Année de publication : 2019 Article en page(s) : p. 208-212 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Copolymères
Cuirs et peaux -- Finition
Fluoropolymères
Hydrophobie
Latex
Polyacrylates
Polymères en émulsion
Polymérisation en émulsion
Résistance thermique
Revêtements antisalissuresIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : In order to improve the hydrophobicity and applied properties of leather products, 3- (Trimethoxysilyl)propyl methacrylate (KH-570) and Dodecafluoroheptyl methacrylate (G04) were used as modified monomers preparing a fluorosilicone polyacrylate leather finishing agent by semi-continuous seed emulsion polymerisation. The structure of the prepared latex film was characterised and analysed by FTIR and XPS. The effects of the addition of silicone monomer on the latex film and the application properties were investigated by SEM and TG. The results showed that: both the organic fluorine and the silicone monomers participated in the polymerisation, and the particle size of the emulsion was 50-70nm. XPS showed that the fluorine and silicon elements in the film-air interface were 1.74% and 3.12% higher than the theoretical values. SEM showed that the surface microstructure of the latex film of the fluorosilicone copolymer emulsion was relatively rough, and the roughness was helpful to further improve the hydrophobicity and antifouling property of the finished leather. TG showed that, after the addition of silicone monomer, the heat resistance of the film was obviously improved. Compared with fluorinated polyacrylate emulsion, the contact angle of the leather sample finished by organo fluorosilicone polyacrylate emulsion to water increased about 7°. The applied properties of the finished leather were also improved. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Preparation of fluorosilicone polyacrylate - Finishing technology of leather - FTIR characterisation of polymer film - Testing of emulsion particle size - XPS analysis of latex film surface - SEM analysis of latex film - TG analysis of latex film - Contact angle of finished leather to water - Testing of the finished leather applied properties
- RESULTS AND DISCUSSION : FTIR analysis of latex film - XPS analysis of latex film - Scanning electron microscopy of latex film - Measurement of contact angle of leather to water - Testing of the finished leather applied propertiesEn ligne : https://drive.google.com/file/d/1Au_o7I11Y6vnpVSH9P51Ieebo4ZKsFs1/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32801
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 103, N° 4 (07-08/2019) . - p. 208-212[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21085 - Périodique Bibliothèque principale Documentaires Disponible Organic fluorosilicone modified waterborne polyurethane leather finishing agent / Zhao Wenjing in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 1 (01-02/2023)
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Titre : Organic fluorosilicone modified waterborne polyurethane leather finishing agent Type de document : texte imprimé Auteurs : Zhao Wenjing, Auteur ; Sui Zhihui, Auteur ; Qi Zhang, Auteur ; Deng Lihua, Auteur ; Li Zeyang, Auteur ; Zu Bin, Auteur Année de publication : 2023 Article en page(s) : p. 1-4 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Cuirs et peaux -- Finition
Douceur (toucher)
Fluorosilicones
Granulométrie
Hydrophobie
Polymères en émulsion
Polymérisation en émulsion
PolyuréthanesIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : In order to improve the hydrophobicity and softness of leather, a fluoro-silicon-modified waterborne polyurethane (FSiWPU) leather finishing agent was prepared by emulsion polymerisation using 1H,1H,2H,2H-Nonafluoro-1-hexanol (F9) and N-(2-aminoethyl) -3-aminopropyl trimethoxy silane (KH-792) as modified monomers. The structure of the latex film and the film was characterised by FTIR, XRD and UV. The effects of F9 and KH-792 on the properties of the film was investigated. The water contact angle and application properties of the coated leather were tested. FTIR and XRD showed that F9 and KH-792 were successfully introduced into the main chain of waterborne polyurethane. The particle size of the modified composite emulsion was 106nm; the UV transmittance of the composite emulsion was significantly reduced compared to pure aqueous polyurethane. The water contact angle of the leather finished with the composite emulsion was 111° Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Preparation of fluorosilicone waterborne polyurethane emulsion - Finishing technology of leather - Fourier transform infrared spectra (FTIR) analysis - XRD analysis of emulsion - Particle size analysis of emulsion - UV analysis of emulsion - Contact angle of finished leather to water - Testing of the finished leather applied properties
- RESULTS AND DISCUSSION : FTIR analysis - Emulsion particle size distribution test - Testing of the finished leather's applied performance
- Table 1 : Application performance of the finished leatherEn ligne : https://drive.google.com/file/d/1d_WJZIXs1zK5qGap1DDngHkVOX0uhsbX/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38866
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 107, N° 1 (01-02/2023) . - p. 1-4[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23893 - Périodique Bibliothèque principale Documentaires Disponible Oxymer M112 - Use in anionic polyurethane dispersions / Malin Rex in PAINTINDIA, Vol. LXIII, N° 5 (05/2013)
PermalinkPerformances et polyvalences des silicones / Joanne Schwark in L'INDUSTRIE TEXTILE, N° 1327 (01/2001)
PermalinkPermeability of polymer coatings / Elena B. Potemina in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 202, N° 4578 (11/2012)
PermalinkPhysical properties and morphology of siloxane–polyacrylate dispersion and coating films / Weepol Pramualkijja in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 5 (09/2020)
PermalinkPickering aqueous foam templating : a promising strategy to fabricate porous waterborne polyurethane coatings / Jianhui Wu in COLLAGEN AND LEATHER, Vol. 5 (2023)
PermalinkPermalinkPlastics - Polymers dispersions - Determination of white point temperature and minimum film-forming temperature - Norme ISO 2118 / International Organization for Standardization (Genève, Suisse) / Geneve [Switzerland] : International Organization for Standardization (ISO) (1996)
PermalinkPlastiques. Résines à l'état liquide ou en émulsions ou dispersions. Détermination de la viscosité apparente selon le Procédé Brookfield - Norme NF EN ISO 2555 / Association Française de Normalisation (Paris) / Saint-Denis La Plaine : Association Française de Normalisation (AFNOR) (1999)
PermalinkPoly(N-acryloyl ciprofloxacin-co-acrylic acid)-incorporated waterborne polyurethane leather coating with long-lasting antimicrobial property / Jinming Chang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 1 (01/2017)
PermalinkPolyamide resin dispersion offers beneficial properties for coated roll stock uses / Palitha K. Abeywardena in ADHESIVES AGE, Vol. 40, N° 2 (02/1997)
PermalinkPolydopamine functional reduced graphene oxide for enhanced mechanical and electrical properties of waterborne polyurethane nanocomposites / Shengwen Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 6 (11/2018)
PermalinkPolymer dispersions and their industrial applications / Dieter Urban
PermalinkPolymer solution characterization with the FENE-P model / B. Purnode in LES CAHIERS DE RHEOLOGIE, Vol. XIV, N° 1 (09/1995)
PermalinkLes polymères vinyliques en émulsion pour peinture / M. Tapin / Paris : AFTPVA (1976)
PermalinkA polyurethane-based retanning agent with fluorescent effect / Saiqi Tian in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 4 (04/2016)
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