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Preparation and characterization of water-based polyurethane–acrylic hybrid nanocomposite emulsion based on a new silane-containing acrylic macromonomer / Hamid Javaheriannaghash in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 3 (05/2012)
[article]
Titre : Preparation and characterization of water-based polyurethane–acrylic hybrid nanocomposite emulsion based on a new silane-containing acrylic macromonomer Type de document : texte imprimé Auteurs : Hamid Javaheriannaghash, Auteur ; Nasrin Ghazavi, Auteur Année de publication : 2012 Article en page(s) : p. 323-336 Note générale : Bibliogr. Langues : Américain (ame) Catégories : acrylique, Acide L'acide acrylique ou acide acroléïque ou acide prop-2-énoïque est un composé organique de formule brute C3H4O2 et de formule semi-développée CH2=CHCOOH. C'est un acide carboxylique et un alcène vinylique, et se présente comme un liquide incolore à l'odeur âcre.
L'acide acrylique et ses esters, les acrylates, sont utilisés dans la fabrication de matières plastiques, dans les peintures acryliques et dans divers autres polyacryliques qui ont de multiples usages.
Anhydride maléique
Caractérisation
EthanolamineL'éthanolamine, également appelée 2-aminoéthanol ou monoéthanolamine, est un composé chimique organique qui est à la fois une amine primaire (par son groupe amine) et un alcool primaire (par son groupe hydroxyle). À l'instar des autres amines, la monoéthanolamine se comporte en base faible. L'éthanolamine est un liquide toxique, inflammable, corrosif, incolore et visqueux ; son odeur est similaire à celle de l'ammoniac.
Matériaux hybrides
Monomères
Polyuréthanes
Revêtements en phase aqueuse:Peinture en phase aqueuse
SilanesIndex. décimale : 667.9 Revêtements et enduits Résumé : A new silane-containing acrylic macromonomer, maleimidedoethoxybutoxydimethylsiloxy butyl acrylate (MEBDMSBA), based on maleic anhydride (MA), ethanolamine (EA), 1,4-butanediol (BDO), dichlorodimethylsilane (DCDMS), and acrylic acid (AA) has been synthesized for formulation of waterborne polyurethane (WPU). Also a series of new silane-containing WPU, methyl methacrylate (MMA), MEBDMSBA, and montmorillonite (MMT) with organically modified montmorillonite (OMMT) content (1.25 wt%) hybrid nanocomposites have been successfully prepared by the emulsion polymerization in the presence of a WPU dispersion, using ammonium peroxodisulfate (APS) as an initiator. The WPU dispersion has been synthesized by a polyaddition reaction of isophorone diisocyanate (IPDI) on polypropylene glycol (PPG-1000) and dimethylol propionic acid (DMPA) as chain extender. The monomer was characterized by Fourier transformer infrared spectroscopy (FTIR), elemental analysis, proton (1H NMR), and carbon (13C NMR) nuclear magnetic resonance spectroscopes, respectively. The nanocomposite emulsions were also characterized using Fourier transform infrared spectroscopy (FTIR) and laser light scattering. Thermal properties of the copolymers were studied using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The OMMT was characterized by FTIR and X-ray diffraction (XRD). The morphology of copolymers was investigated by scanning electron microscopy (SEM) and transition electron microscopy (TEM), and then the effects of silane concentrations on the water absorption ratio were examined. Results showed that OMMT could improve the properties of emulsion; in other words, the properties of nanocomposite emulsion were better when compared with those of the silane–acrylate emulsion. Note de contenu : - EXPERIMENTAL : Materials - Preparation of OMMT - Synthesis of bis-hydroxybutoxydimethyl silane (BHBDMS) - Synthesis of an imide ring and silane-containing acrylic macronomer (MEBDMSBA) - Preparation of polyurethane dispersion (PUD) - Semi-continuous emulsions polymerization using polyurethane dispersions - Morphology of P (U/A/Si)/OMMT hybrid emulsion - Film formation - Water absorption - Polymer characterization
- RESULTS AND DISCUSSION : Design of MEBDMSBA with silane and imide ring - NMR analysis of MEBDMSBA - FTIR spectra of MMT and OMMT - Distance of MMT and OMMT layers - FTIR spectrum of P (U/A/Si)OMMT nanocomposites - Thermal properties - Morphological characterization of P (U/A), P (U/A/Si), and P (U/A/Si)/OMMT nanocomposites - Effect of MEBDMSBA concentration on reaction rate - Water absorption ratio of the P (U/A/Si)/OMMT nanocompositesDOI : 10.1007/s11998-011-9373-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-011-9373-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15963
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Code-barres Cote Support Localisation Section Disponibilité 14188 - Périodique Bibliothèque principale Documentaires Disponible Preparation and properties of a methacrylic acid-co-modified maleic anhydride/montmorillonite nanocomposite for tanning / Yan Bao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 4 (07-08/2011)
[article]
Titre : Preparation and properties of a methacrylic acid-co-modified maleic anhydride/montmorillonite nanocomposite for tanning Type de document : texte imprimé Auteurs : Yan Bao, Auteur ; Jianzhong Ma, Auteur ; Zhang Jing, Auteur ; E. Tao, Auteur Année de publication : 2011 Article en page(s) : p. 147-151 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anhydride maléique
Diffractométrie de rayons X
EthanolamineL'éthanolamine, également appelée 2-aminoéthanol ou monoéthanolamine, est un composé chimique organique qui est à la fois une amine primaire (par son groupe amine) et un alcool primaire (par son groupe hydroxyle). À l'instar des autres amines, la monoéthanolamine se comporte en base faible. L'éthanolamine est un liquide toxique, inflammable, corrosif, incolore et visqueux ; son odeur est similaire à celle de l'ammoniac.
Matériaux hybrides
Méthacrylique, AcideL'histoire de l'acide méthacrylique commence en 1865, année où il est synthétisé pour la première fois à partir du méthacrylate d'éthyle.
L'acide méthacrylique est très réactif avec les groupes carboxyles, vinyles et esters.
Microscopie électronique en transmission
Montmorillonite
Persulfate de potassium
Polyaddition
Résistance à l'humidité
Résistance thermique
TannageIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Methacrylic acid-co-modified anhydride/montmonrillonite (MAA-co-modified MA/MMT) nanocomposite was prepared via the free radical copolymerization of methacrylic acid and maleic anhydride in the presence of montmorillonite, in which maleic anhydride and montmorillonite were modified respectively by ethanolamine and the initiator (potassium persulfate). The influence of maleic anhydride modifier, the mass ration of MAA to MA and modified MMT contents on the application properties of nanocomposite was investigated.
The wet-heat resistance stability and the fullness of leather tanned by nanocomposite were improved with the increase of hydroxyl group of ethanolamine. The introduction of modified MA and modified MMT resulted in increase and then decrease of the wet-heat resistance stability and the fullness of leather. X-ray diffraction (XRD) and Transmission Electron Microscope (TEM) confirmed MAA-co-modified MA/MMT nanocomposite is categorized as exfoliated and intercalated one.Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Preparation of MAA-co-modified MA/MMT nanocomposite (see appendix for details) - Characterization of MAA-co-modified MA/MMT nanocomposite - Application of MAA-co-modified MA/MMT nanocomposite leather sampels.
- RESULTS AND DISCUSSION : Effect of maleic anhydride modifier -Effect of the mass ration of MAA to MA - Effect of modified MMT contents - The structure of MAA-co-modifed MA/MMT nanocompositeEn ligne : https://drive.google.com/file/d/17jvN5Q8x52orzKyQQbGiOLQOLVyOknE1/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11857
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Code-barres Cote Support Localisation Section Disponibilité 013212 - Périodique Bibliothèque principale Documentaires Disponible Reactive blending of thermoplastic polyurethane and polypropylene / R. Jaruttrakool in INTERNATIONAL POLYMER PROCESSING, Vol. XXV, N° 5 (11/2010)
[article]
Titre : Reactive blending of thermoplastic polyurethane and polypropylene Type de document : texte imprimé Auteurs : R. Jaruttrakool, Auteur ; S. Tanpichai, Auteur ; D. Pentrakoon, Auteur ; P. Potiyaraj, Auteur Année de publication : 2010 Article en page(s) : p. 327-333 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alliages polymères
Analyse thermique
Anhydride maléique
Extrudeuse bi-vis
Microscopie électronique à balayage
Polypropylène
Polyuréthanes
Thermogravimétrie
ThermoplastiquesUne matière thermoplastique désigne une matière qui se ramollit (parfois on observe une fusion franche) d'une façon répétée lorsqu'elle est chauffée au-dessus d'une certaine température, mais qui, au-dessous, redevient dure. Une telle matière conservera donc toujours de manière réversible sa thermoplasticité initiale. Cette qualité rend le matériau thermoplastique potentiellement recyclable (après broyage). Cela implique que la matière ramollie ne soit pas thermiquement dégradée et que les contraintes mécaniques de cisaillement introduites par un procédé de mise en forme ne modifient pas la structure moléculaire.Index. décimale : 668.9 Polymères Résumé : In this research, reactive blending of thermoplastic polyurethane (TPU) and polypropylene (PP) was studied. Grafting of maleic anhydride (MAH) onto TPU/PP blends was performed by a twin-screw extruder in the presence of dicumyl peroxide (DCP). Mechanical properties and morphology of the blends were investigated by tensile testing and scanning electron microscopy (SEM), respectively. Thermal properties of the blends were characterized by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The obtained results were compared with those of the uncompatibilized blends and the blends compatibilized with a commercial maleic anhydride grafted polypropylene (PP-g-MA). The results from the uncompatibilized blends clearly indicate that the TPU and PP are immiscible resulting in undesirable properties of the blends. These properties were improved significantly when TPU and PP were reactive-blended in the presence of MAH and DCP. When comparing with the blends compatibilized with PP-g-MA, the blends prepared by the reactive blending technique possessed better mechanical properties. DOI : 10.3139/217.2299 En ligne : https://drive.google.com/file/d/1lZ47o3X3uRP2jR8clZvio_QsOlvDoN8D/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10250
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Code-barres Cote Support Localisation Section Disponibilité 012592 - Périodique Bibliothèque principale Documentaires Disponible Recycling the cork powder in a PVC-based composite material : combined effect on physico-mechanical and thermal properties / Hakima Boulahia in INTERNATIONAL POLYMER PROCESSING, Vol. XXXI, N° 3 (07/2016)
[article]
Titre : Recycling the cork powder in a PVC-based composite material : combined effect on physico-mechanical and thermal properties Type de document : texte imprimé Auteurs : Hakima Boulahia, Auteur ; A. Zerizer, Auteur ; Z. Touati, Auteur ; A. Sesbou, Auteur Année de publication : 2016 Article en page(s) : p. 346-355 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anhydride maléique
Chlorure de polyvinyle
Composites -- Propriétés mécaniques
Granulométrie
Liège
Microscopie électronique à balayage
Morphologie (matériaux)
Poudres
Réaction de couplage
Recyclage (déchets, etc.)
ThermogravimétrieIndex. décimale : 668.4 Plastiques, vinyles Résumé : A large amount of cork powder (CP) produced by cork industry ended up in landfills, they are the result of the crushing of natural floor (bark) cork oak, hence the need to recycle these wastes to prevent environmental problems. To this end, the work is to combine the powdered cork recovered with a thermoplastic material to provide a cork based composite (CPC) having physico-mechanical characteristics and thermal very interesting. Several formulations of composite materials based on PVC (as matrix), cork powder (as a charge) and a PVC-g-MA coupling agent, have been the subject of experimental study to evaluate the physical-mechanical and thermal properties. To investigate the combined effect of cork powder and PVC-g-MA on composite properties, the samples were manufactured by varying the content of PC (30 %, 40 % and 50 %) with two PVC-g-MA concentrations. Improving the stability of PVC which is accentuated in the presence of the coupling agent. In addition, it was found that the incorporation of the coupling agent has enabled the elimination of the adverse effect of cork powder, improving the tensile strength. The composite obtained in this study yielded some promising properties, even if building strategies to achieve greater strength and rigidity could beings needed for specific applications. Note de contenu : - EXPERIMENTAL STUDIES : Materials - Preparation of the composite material
- TEST METHODS : Particle size analysis (laser granulometer) - Relative density - Thermogravimetric analysis (TGA) - Mechanical tests - Scanning electron microscopy (SEM)
- RESULTS AND DISCUSSIONS : Relative density - Thermogravimetric analysis (TGA/DTG) - Mechanical evaluation - Morphological analysis (SEM)DOI : 10.3139/217.3199 En ligne : https://drive.google.com/file/d/1A23WfHbaYWQGQZZ6K1ikA608svvG1MTY/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26647
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Code-barres Cote Support Localisation Section Disponibilité 18175 - Périodique Bibliothèque principale Documentaires Disponible Synthesis, characterization and application of sulphite castor maleic adduct as an effective leather fatliquor / Muhammad Imran-Ul Haq in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 5 (09-10/2016)
[article]
Titre : Synthesis, characterization and application of sulphite castor maleic adduct as an effective leather fatliquor Type de document : texte imprimé Auteurs : Muhammad Imran-Ul Haq, Auteur ; Ayoub Rasheed, Auteur ; Ahmad Adnan, Auteur ; Fahim Ashraf Qureshi, Auteur ; Rashid Saleem, Auteur Année de publication : 2016 Article en page(s) : p. 263-270 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anhydride maléique
Composés organiques -- Synthèse
Croûte (cuir)On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés.
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux de chèvres
Douceur (toucher)
Huile de ricin et constituants
Huiles et graisses
Métabisulfite de sodiumLe métabisulfite de sodium ou pyrosulfite de sodium est un désinfectant, antioxydant et conservateur alimentaire jaunâtre.
Photostabilité
Produits de nourriture du cuir
Solubilité
ViscositéIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Fatliquors are involved in leather making process to separate fibres of leather from each other and impart soft hand feeling. Fatliquors are chemically modifications of vegetable and animal oils. Castor oil is suitable as a basic raw material for the preparation of fatliquor due to hydroxyl functionality on ricinoleic acid. In this paper, castor ail based synthetic fatliquors were synthesised by two step processes. In a first step castor oil is condensed with maleic anhydride at varying mole ratio from 1 to 3. In the second step castor maleic adduct was sulphited with sodium metabisulphite at varying mole ratios from zero to 1.5. Solubility behaviour with viscosity changes were observed at différent mole ratios of reactants. Structural changes in synthetic fatliquors were studied by FTIR spectroscopy.
Fatliquoring properties at the stabilised fatliquors were comparatively evaluated on goat crust leather. Comparative analysis at leather softness, lear and tensile strengths, elongation at break, light fastness and scanning electron microscopy (SEM) of the fatliquored feathers were studied and comparatively better results were found in leather using the synthetic fatliquor which was synthesised at optimal conditions of castor ail to maleic anhydride mole ratio of 1:1.5 and further sulphitation of the castor maleic adduct with sodium metabisulphite at a mole ratio of 1.Note de contenu : - EXPERIMENTAL PROCEDURES : Chemicals - Apparatus - Preparation of sulphited castor maleic condensate based synthetic fatliquor
- RESULTS AND DISCUSSIONS : Schematic approach for synthetic fatliquor - Solubility and viscosity behavior - Fatliquor application - Organoleptic properties - Scanning electron microscopy - Structure elucidationEn ligne : https://drive.google.com/file/d/1Gdqv54OnVR3LcJIsVxL245nq0s-ZLlrc/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27092
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Code-barres Cote Support Localisation Section Disponibilité 18411 - Périodique Bibliothèque principale Documentaires Disponible Tailored composites / Beate Treffler in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 198, N° 4531 (12/2008)
PermalinkThe particle size effect of MALPB-DEA dispersions on their anticorrosion performances as waterborne coatings on galvanized sheet / Jinwei Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 1 (01/2011)
PermalinkThe use of apparent yield stress to characterize exfoliation in polymer nanocomposites / Bruno Vergnes in INTERNATIONAL POLYMER PROCESSING, Vol. XXVI, N° 2 (05/2011)
PermalinkThermally stable polymers from gum rosin of pinus roxburghii / Arundhati Panda in PAINTINDIA, Vol. LXIII, N° 3 (03/2013)
PermalinkThermoplastic blends of PP and waste rubber powder : Effects of compatibilizer on tensile properties, thermal behavior and decomposition kinetics / J.-N. Yan in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIII, N° 4 (08/2018)
PermalinkTop coating of low-molecular weight polymer MALPB used for enhanced protection on anodized AZ31B Mg alloys / Jinwei Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 6 (11/2010)
PermalinkPermalinkVOC free water thinnable coatings based on unsaturated polyester / Anuradha Satpute in PAINTINDIA, Vol. LVIII, N° 7 (07/2008)
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