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ACOMP monitors 2-ethylhexyl acrylate and its comonomer-based reactions in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4647 (12/2018)
[article]
Titre : ACOMP monitors 2-ethylhexyl acrylate and its comonomer-based reactions Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 32-35 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : 2-Ethylhexyl acrylate
Adhésifs sensibles à la pression
Chromatographie sur gel
Copolymères -- Synthèse
Homopolymères
Polymérisation
RhéologieIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : The author discusses the rol of its ACOMP online monitoring system in monitoring the polymerisation of two pressure sensitive adhesives. Note de contenu : - Understanding the optical properties of monomers and polymers
- ACOMP configured to monitor the synthesis of poly2EHA and poly2EHA-AA
- Reaction methodology
- Acomp yields real-time results on the polymerisation of 2-ethylhexyl acrylate
- GPC characterisation
- Fig. 1 : ACM RI data for 2EHA monomer and poly2EHA
- Fig. 2 : UV spectra of 2EHA, acrylic acid and poly2EHA
- Fig. 3 : Raw UV, viscosity and SLS signals of homopolymer 2EHA batch polymerisation
- Fig. 4 : Raw UV, viscosity, and SLS data from copolymer 2EHA and AA batch polymerisation
- Fig. 5 : Polymer concentration at UV detector
- Fig. 6-7 : Intrinsic viscosity vs polymer concentration
- Fig. 8 : GPC analysis
- Fig. 9 : GPC analysis continued
- Table 1 : Reaction conditions for each polymerisation
- Table 2 : ACOMP monitored results of intrinsic viscosity and molecular weight
- Table 3 : GPC analysis resultsEn ligne : https://drive.google.com/file/d/1svtIgwRLdKQRHXbkcAUCg0zwTs8EPy6S/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31517
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 208, N° 4647 (12/2018) . - p. 32-35[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20463 - Périodique Bibliothèque principale Documentaires Disponible An overview of size exclusion chromatography applied to polymers and coatings / Theodore Provder in COATINGS TECH, Vol. 18, N° 4 (04/2021)
[article]
Titre : An overview of size exclusion chromatography applied to polymers and coatings Type de document : texte imprimé Auteurs : Theodore Provder, Auteur Année de publication : 2021 Article en page(s) : p. 46-59 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Chromatographie sur gel
Oligomères
Poids moléculaires
Polymères
Revêtements organiques
ViscosimétrieIndex. décimale : 667.9 Revêtements et enduits Résumé : The coatings technologies of waterborne, high solids, powder, and radiation curable coatings generally require high-molecular-weight latex polymers or strategically designed low-molecular-weight polymers, oligomers, and reactive additives. The design of these resin materials requires molecular weight distribution (MWD) information in the very high and very low-molecular-weight ranges which are accessible by size-exclusion chromatography (SEC). In addition, there is a need for compositional distribution information as a function of molecular weight, particularly for oligomers; absolute MWD information, particularly for water-soluble polymers ; and chain-branching information for high-molecular-weight polymers.
This overview discusses the SEC separation mechanism, molecular weight calibration methods including the use of hydrodynamic volume, data treatment methods, and polymer chain-branching determination. The use of molecular size sensitive detectors (viscometer, light scattering) and compositional sensitive detectors (UV-visible, IR) are discussed in the context of illustrative qualitative and quantitative examples. The practice of high-resolution SEC analysis of oligomers is discussed and illustrated with problem-solving examples.Note de contenu : - SEC SEPARATION MECHANISM : Instrumentation - Calibration - instrument spreading correction - Multiple detectors
- SEC/DRI/UV/IR : Quantitative compositional molecular-weight distribution considerations
- SEC/LALLS/MALS : - SEC/viscometer - Oligomer applications
- FUTURE TRENDS AND NEEDS
- Fig. 1 : Dependence of molecular size in solution upon retention volume
- Fig. 2 : Schematic procedures for obtaining the secondary molecular weight calibration curve from on-line SEC/viscometer data
- Fig. 3 : SEC/DRI/ IR/UV chromatogram for a copolymer of methyl methacrylate (MMA) and vinyl acetate (VA) (25/75)
- Fig. 4 : SEC/UV/IR chromatogram of a blend of a styrene/acrylic/acid terpolymer resin and a melamine resin
- Fig. 5 : SEC/UV and SEC/IR chromatogram of poly(methyl methacrylate) (PMMA) samples
- Fig. 6 : Contour plot of a Glycidal Methacrylate (GMA) acrylic copolymer
- Fig. 7 : Spectrum index plot of an acrylic copolymer
- Fig. 8 : Photodiode array detection (PAD) estimate of the styrene content of a styrene acrylonitrile (SAN) copolymer
- Fig. 9 : SEC/MALS responses from DRI and MALS detectors for a three component polystyrene mixture
- Fig. 10 : Variations of scattering intensities with angular position and retention volume
- Fig. 11 : HPGPC DRI/VISC detector responses versus retention volume
- Fig. 12 : Log [η] versus log Mw plots for two randomly branched polyvinyl acetate samples
- Fig. 13 : HPSEC chromatograms of two high solids polyester resin samples
- Fig. 14 : Chromatograms of three isocyanate crosslinkersEn ligne : https://drive.google.com/file/d/1ppM8QnRv82tUnFIhdRGwbX8o_i_9CUf2/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35699
in COATINGS TECH > Vol. 18, N° 4 (04/2021) . - p. 46-59[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22676 - Périodique Bibliothèque principale Documentaires Disponible Analyse par CES : utilisation du cyclohexane / F. Bonfils in CAOUTCHOUCS & PLASTIQUES, N° 738 (02/1995)
[article]
Titre : Analyse par CES : utilisation du cyclohexane Type de document : texte imprimé Auteurs : F. Bonfils, Auteur ; J. C. Laigneau, Auteur ; J. Sainte-Beuve, Auteur ; A. Koman Achi, Auteur Année de publication : 1995 Article en page(s) : p. 74-76 Note générale : Bibliogr. Langues : Français (fre) Catégories : Caoutchouc
Chimie analytique
Chromatographie sur gel
CyclohexaneIndex. décimale : 668.4 Plastiques, vinyles Résumé : L'emploi du cyclohexane, comme solvant d'élution dans la chromatographie d'exclusion stérique, permet d'accéder à la distribution de différents types de caoutchouc naturel sans provoquer l'obstruction des colonnes, problème généralement rencontré avec d'autres solvants. Note de contenu : - Principales formules relatives à la distribution moléculaire d'un polymère
- FIGURES : 1. Différents types de courbes de distribution moléculaire obtenues pour le caoutchouc naturel - 2. Distribution moléculaire obtenue pour deux échantillons monoclonaux à viscosité stabilisée préparées à partir de latex - 3. Action des UV atmosphériques sur un échantillon de caoutchouc naturel à l'état solide - 4. Action des UV atmosphériques sur un échantillon de polyisoprène synthétique à l'état solide - 5. Action du séchage sur des échantillons de caoutchouc naturel (fond de tasse de PB 235)Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24575
in CAOUTCHOUCS & PLASTIQUES > N° 738 (02/1995) . - p. 74-76[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 002562 - Périodique Bibliothèque principale Documentaires Disponible Bio-based polyester itaconates as binder resins for UV-curing offset printing inks / Tobias Robert in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 3 (05/2019)
[article]
Titre : Bio-based polyester itaconates as binder resins for UV-curing offset printing inks Type de document : texte imprimé Auteurs : Tobias Robert, Auteur ; Steven Eschig, Auteur ; Toine Biemans, Auteur ; Frank Scheifler, Auteur Année de publication : 2019 Article en page(s) : p. 689-397 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Biopolymères
Chromatographie sur gel
Encre -- Séchage sous rayonnement ultraviolet
Encre d'imprimerie
Essais (technologie)
Formulation (Génie chimique)
Itaconates de polyester
Mesure
Offset (imprimerie)
Polymères -- Synthèse
RhéologieIndex. décimale : 667.9 Revêtements et enduits Résumé : UV-curing inks have several economic and environmental advantages compared with standard printing inks, such as high printing velocities, low VOC emissions and good adhesion to nonabsorbing substrates. However, there are also some drawbacks, such as residual monomers, pungent odor and allergic potential of monomers and prepolymers derived from acrylic acid. In addition, only few examples of UV-curing inks derived from renewable resources are known. Herein, acrylate-free UV-curing polyester itaconates with a renewable content up to 100% and their application as binder resins in UV-curing offset ink formulations are presented. In order to obtain a high renewable content in the polyester resins, Zn(OAc)2 had to be used as polycondensation catalyst, as standard Brønsted acid catalyst led to undesired side reactions. The resins obtained with this synthetic protocol were tested on their reactivity, which was slightly lower than a commercial polyester acrylate. Printing inks formulated from these polyester itaconates showed interesting properties despite the fact that no acrylic acid was incorporated in the resins. Note de contenu : - Materials
- Measurements
- Synthesis of polyester itaconates (PE-I)
- Viscosity
- Size exclusion chromatography (SEC) measurements
- Curing tests and printing tests
- Printing ink formulations
- Misting tests
- Flow testDOI : 10.1007/s11998-018-0146-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-0146-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32582
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Code-barres Cote Support Localisation Section Disponibilité 20953 - Périodique Bibliothèque principale Documentaires Disponible Characterization and properties of gradient polyacrylate latex particles by gradient emulsion polymerization / Xinya Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 6 (11/2012)
[article]
Titre : Characterization and properties of gradient polyacrylate latex particles by gradient emulsion polymerization Type de document : texte imprimé Auteurs : Xinya Zhang, Auteur ; Xia Wei, Auteur ; Wenxing Yang, Auteur ; Yongjin Li, Auteur ; Huanqin Chen, Auteur Année de publication : 2012 Article en page(s) : p. 765-774 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acrylate de butyle
Analyse thermique
Caractérisation
Chromatographie sur gel
Copolymérisation
Latex
Méthacrylate de méthyle
Microscopie à force atomique
Microscopie électronique en transmission
Particules (matières)
Polyacrylates
Polymérisation en émulsion
Résonance magnétique nucléaireIndex. décimale : 667.9 Revêtements et enduits Résumé : In this study, gradient acrylate latex particles were synthesized by gradient copolymerization. n-Butyl acrylate (BA) and methyl methacrylate (MMA) were used as co-monomers, dodecyl diphenyl ether sodium disulfonate as the emulsifier, and potassium persulfate as the initiator. The technique involved the continuous addition of one monomer mixture into a stirred tank containing another monomer mixture. Their microstructure and properties were analyzed by nuclear magnetic resonance (NMR), gel permeation chromatography (GPC), differential scanning calorimetry (DSC), atomic force microscopy (AFM), transmission electron microscopy (TEM), and particle size analysis. 1H-NMR spectra show a gradual change in the chemical composition with the growth of molecular chains. The gradient polymer latexes, the instantaneous copolymer composition of which varies as the polymerization proceeds, are obtained. GPC analyses show that the aggregated molecular chain in the BA-centered latex particle experiences a process from dominant BA to MMA with changes in the monomer's feed composition during the polymerization. Particle size and TEM analyses show that the increasing latex size agrees well with the gradient growth pattern. DSC analyses show that the gradient latex particles exhibit only one broadened and ambiguous glass transition region. AFM analyses indicate no obvious microphase segregation occurs in the gradient latex particles, further verifying that the gradient microstructure is obtained. Note de contenu : - EXPERIMENTAL DETAILS : Materials - Gradient emulsion polymerization - Testing and characterization
- RESULTS AND DISCUSSION : H-NMR analyses - GPC analyses - Particle size analyses - DSC and MFT analyses - AFM analysesDOI : 10.1007/s11998-012-9422-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-012-9422-x.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16662
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Code-barres Cote Support Localisation Section Disponibilité 14359 - Périodique Bibliothèque principale Documentaires Disponible Characterization of commercial polysorbates using different chromatographic techniques / S. Abrar in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 46, N° 5/2009 (09-10/2009)
PermalinkChromatographie d’exclusion stérique multi-détection / Luc Picton in L'ACTUALITE CHIMIQUE, N° 422-423 (10-11/2017)
PermalinkCombinatorial approach to study the effect of acrylic polyol composition on the properties of crosslinked siloxane-polyurethane fouling-release coatings / Robert J. Pieper in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 4 (12/2007)
PermalinkContribution à l'étude de l'aptitude à l'extrusion de divers polyéthylènes et copolymères d'éthylène. Application au gainage des cables / Jean Delale / 1979
PermalinkEffect mechanism of acidification and vulcanization on SBS-modified asphalt / Feng Zhang in INTERNATIONAL POLYMER PROCESSING, Vol. 37, N° 5 (2022)
PermalinkEffect of phenol concentration on cure and epoxide equivalent weight (EEW) of cardanol based epoxidized novolac type phenolic resins / Priti Shukla in PAINTINDIA, Vol. LX, N° 9 (09/2010)
PermalinkEnvironmentally preferred coatings from modified cardanol-based epoxidized novolac resin / Ranjana Yadav in PAINTINDIA, Vol. LVIII, N° 6 (06/2008)
PermalinkGreen wood protection / Dirk Mestach in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 194, N° 4477 (06/2004)
PermalinkImpact of microwave irradiation on vegetable tanning / Jiacheng Wu in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 1 (01-02/2018)
PermalinkInfluence of microwave on chromium complex composition in tanning liquor / Jinwei Zhang in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 2 (Année 2020)
PermalinkKeeping an eye on quality / G Saunders in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 192, N° 4451 (04/2002)
PermalinkKnowledge-based control of emulsion polymerization : Tailoring adhesive properties / Oihana Elizalde in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 1, N° 1 (01/2004)
PermalinkLiants pour peintures et vernis. Chromatographie par perméation de gel (GPC) - Partie 1 : Utilisation de tétrahydrofurane (THF) comme éluant - Norme ISO 13885-1 / International Organization for Standardization (Genève, Suisse) / Geneve [Switzerland] : International Organization for Standardization (ISO) (1998)
PermalinkMolecular sieve chromatography / David S. Robinson in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 60 (Année 1976)
PermalinkMolecular sieve chromatography / David S. Robinson in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 60, N° 2 (03-04/1976)
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