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Titre : Sticking to the regulations : Advantages of benzoates in waterborne adhesives for food contact Type de document : texte imprimé Auteurs : Emily McBride, Auteur ; William D. Arendt, Auteur ; Marianne Conner, Auteur Année de publication : 2014 Article en page(s) : p. 28-31 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adhésifs en phase aqueuse
BenzoatesUn benzoate est un sel de l'acide benzoïque (C6H5COOH ou C7H6O2) qui est un acide carboxylique aromatique dérivé du benzène.
Les benzoates sont notamment utilisés dans l'industrie alimentaire comme additifs :
- Le benzoate de sodium (Na+ + C6H5COO-), référencé en Europe sous le code « E211 »
- Le benzoate de potassium (K+ + C6H5COO-), référencé en Europe sous le code « E212 »
- Le benzoate de calcium (Ca2+ + (C6H5COO-)2), référencé en Europe sous le code « E213 »
Matériaux pour les industries agro-alimentaires
Plastifiants
Transition vitreuse
ViscositéIndex. décimale : 667.9 Revêtements et enduits Résumé : Regulatory concerns increasingly limit the choice of plasticisers in coatings. Tests on two new monobenzoate plasticisers and established dibenzoate blends used in the adhesives market are reported. The monobenzoates are approved as flavouring additives, reducing concerns over safety. All performed well in a range of adhesive formulations. Note de contenu : - The importance and problems of plasticiser use
- The search for safer plasticisers
- Experimental procedures summarised
- All benzoates show low volatility
- Viscosity and Tg results summarised
- Benefit apparent in set and open times
- Packaging glue formulation shows similar results
- Benzoates offer high flexibility in formulationEn ligne : https://drive.google.com/file/d/1a06DbKNCRDxfJUNwnTQ9Z4FV8aaJ6TI3/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21485
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 6 (06/2014) . - p. 28-31[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16308 - Périodique Bibliothèque principale Documentaires Disponible Study of melt spinning processing conditions for a polyacrylonitrile copolymer with a water/ethanol mixture as a plasticizer / J. Yu in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIV, N° 5 (11/2019)
[article]
Titre : Study of melt spinning processing conditions for a polyacrylonitrile copolymer with a water/ethanol mixture as a plasticizer Type de document : texte imprimé Auteurs : J. Yu, Auteur ; D. G. Baird, Auteur Année de publication : 2019 Article en page(s) : p. 557–563 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alcool
Alliages polymères
Eau
Extrusion filage
Fusion, Points de
Plastifiants
Polyacrylonitrile
RhéologieIndex. décimale : 668.4 Plastiques, vinyles Résumé : This paper is concerned with the feasibility of melt spinning of polyacrylonitrile (PAN) copolymer (acrylonitrile/methylacrylate 95.6/4.4 mol% ratio) plasticized with water-ethanol (EtOH) mixtures. The melting point and rheological and stability behaviors of PAN/water/ethanol mixture are reported. The objective is to determine whether this mixture is appropriate for allowing the PAN to be melt spun. The melting point results from differential scanning calorimetry show the Tm of PAN/water/ethanol (70/15/15 wt%) mixture can be reduced to 150 °C from 300 °C. The time-dependent viscosity results showed that this mixture can be processed at 170 °C for more than 100 min without degradation. The steady-shear viscosity results indicated the shear-thinning behavior is observed for this mixture at a temperature ranging from 170 °C to 190 °C. These rheological data are also highly similar to the reference condition and other potential conditions reported in our previous paper, which indicates PAN/water/ethanol (70/15/15 wt%) at 170 °C is a potential condition for PAN melt spinning. The scanning electron microscopy diagrams show the copolymer strand melt extruded from PAN/water (70/30 wt%) mixture contains many more voids and bubbles than the PAN/water/ethanol (70/15/15 wt%) system. In conclusion, PAN/water/ethanol (70/15/15 wt%) at 170 °C is the most benign set condition (i. e. the composition and temperature) for carrying out the PAN melt spinning process. Note de contenu : - EXPERIMENTAL : Material and sample preparation - Rheological measurements - Differential scanning calorimetry and Scanning Electron Microscopy
- RESULTS AND DISCUSSION : Melting point results - Rheological results of the PAN/EtOH/H2O composition - Composition of rheological results - Scanning Electron Microscopy resultsDOI : https://doi.org/10.3139/217.3847 En ligne : https://www.hanser-elibrary.com/doi/pdf/10.3139/217.3847 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33618
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXIV, N° 5 (11/2019) . - p. 557–563[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21324 - Périodique Bibliothèque principale Documentaires Disponible Tackifiers and VAA adhesives : new tools for the packaging industry / Mark C. Bricker in ADHESIVES AGE, Vol. 37, N° 8 (07/1994)
[article]
Titre : Tackifiers and VAA adhesives : new tools for the packaging industry Type de document : texte imprimé Auteurs : Mark C. Bricker, Auteur ; Stuart T. Gentry, Auteur Année de publication : 1994 Article en page(s) : p. 30-33 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Alcool polyvinylique
Colles:Adhésifs
Copolymère acrylique acétate de vinyle
Emballages
Essais de pelage
Matières premières
Plastifiants
Polyéthylène basse densité
Tackifiant (adhésifs)Index. décimale : 668.3 Adhésifs et produits semblables Résumé : New, soft vinyl acetate/acrylic (VAA) copolymers fall in a Tg range where customers can make use of the advantages of tackifiers. The result is a set of tools that allows adhesive compounders a broad latitude in performance flexibility to meet the needs of the industry. Note de contenu : - Improvements with polymers
- Improvements with tackifiers
- Plasticizers vs. tackifiers
- Tackifiers : why the wait ?
- Which tackifier to choose ?
En ligne : https://drive.google.com/file/d/1k65AXh8zyO3xPPNKA5qxCMs9nGRCg_ow/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20852
in ADHESIVES AGE > Vol. 37, N° 8 (07/1994) . - p. 30-33[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001041 - Périodique Bibliothèque principale Documentaires Exclu du prêt Tackifying resin dispersions : more than just soap and water / George J. Kutsek in ADHESIVES AGE, Vol. 39, N° 7 (06/1996)
[article]
Titre : Tackifying resin dispersions : more than just soap and water Type de document : texte imprimé Auteurs : George J. Kutsek, Auteur Année de publication : 1996 Article en page(s) : p. 24-30 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésifs -- Stockage
Adhésifs en phase aqueuse
Antimicrobiens
Antioxydants
Gommes et résines
Matières premières
Plastifiants
Procédés de fabrication
Rhéologie
Stabilisants (chimie)
SurfactantsIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : Resin dispersions are widely used in water based adhesives to impart specific properties. A resin dispersion is a stable heterogeneous system of resin droplets in water. The resin phase is referred to as the dispersed, internal or discontinuous phase. The surrounding water is the external or continuous phase. The diameter of the resin droplets is less than one micron. Coalescence of the particles is prevented by the repulsive force arising from like surface charges on the particles. This charge is provided by the surfactant used to emulsify the resin. Surfactants are surface active agents that decrease interfacial tension and aid the process of emulsification.
Hydrocarbon resins are low-molecular-weight thermoplastic polymers derived from cracked petroleum distillates, terpene fractions, coal tar and a variety of pure monomers. They are neutral materials with [less than]1 acid number and [less than]2 saponification number. Naturally occurring rosins, rosin esters of aromatic and aliphatic alcohols, and polymerized rosins are also suitable for water-based tackifiers.
A dispersion must be selected that contains a resin suited to the latex polymer, and a dispersion system compatible with that of the latex. Base resin selection is most important, since it affects characteristics of the finished adhesive, including tack, wettability, plasticization and specific adhesion. Compatibility and temperature performance properties are major considerations in selecting a base resin. A less compatible resin may be selected if the high temperature performance it provides outweighs having a fully compatible resin.Note de contenu : - PHYSICAL PROPERTIES OF DISPERSIONS : Solids content - Particle size - Specific gravity - pH - Viscosity - Grit - Mechanical stability - Ion tolerance
- METHOD OF MANUFACTURE
- BATCH VS CONTINUOUS EMULSIFICATION
- RESIN : Hydrocarbon resins - Naturally occuring rosins - Wood rosin - Gum rosin - Tall oil rosin - Rosin esters
- ANTIOXIDANTS
- PLASTICIZERS
- SURFACTANTS : Anionic surfactants - Cationic surfactants - Amphoteric or zwitterionic surfactants - nonionics -
- PROTECTIVE COLLOIDS, THICKENERS AND ADDITIVES : Sodium carboxymethylcellulose - Gum arabic, gum karaya and guar gum - Methylcellulose - Polyvinyl alcohol - Starch - Casein - Polyacrylic acid salts
- BIOCIDES
- STABILITY : Steric stabilization - pH - Viscosity - Specific gravity - Particle size - Multivalent cations - Mechanical shear - Temperature - Loss of stabilizer - Surface evaporation - Biological - Intentional de-emulsification
- STORAGE AND HANDLING : Shipping - Bulk storage - Temperature - Piping - Pumps - Filtration - Sampling - ChemicalEn ligne : https://drive.google.com/file/d/1gPFYGhY18j6DZ3mkjsZ2GY5Euqh8vXUw/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20504
in ADHESIVES AGE > Vol. 39, N° 7 (06/1996) . - p. 24-30[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001065 - Périodique Bibliothèque principale Documentaires Exclu du prêt The mechanical properties of plasticized PVC processed in an extruder with a modified feed zone / Janusz W. Sikora in INTERNATIONAL POLYMER PROCESSING, Vol. XXX, N° 3 (07/2015)
[article]
Titre : The mechanical properties of plasticized PVC processed in an extruder with a modified feed zone Type de document : texte imprimé Auteurs : Janusz W. Sikora, Auteur ; B. Samujlo, Auteur ; A. Stasiek, Auteur ; A. Tor-Swiatek, Auteur Année de publication : 2015 Article en page(s) : p. 359-365 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chlorure de polyvinyle
Extrudeuse monovis
Matières plastiques -- Extrusion:Polymères -- Extrusion
Matières plastiques -- Propriétés mécaniques
PlastifiantsIndex. décimale : 668.9 Polymères Résumé : The work presents the results of experimental studies of selected mechanical properties of plasticized poly(vinyl chloride) extruded by a single-screw extruder with a modified feed section. The variable factors were: feed opening width, feed pocket depth in the extruder barrel and the rotational speed of the screw. The following parameters were studied: yield strength ReH (MPa), tensile strength Rm (MPa), percentage total extension at maximum force ?m (%), Shore hardness H (°ShA). It was found that the increase in the depth of the pocket and the decrease in the width of the feed opening in the studied range increase mechanical properties (besides percentage total extension at maximum force). It was determined that the increase of the screw speed and the simultaneous displacement of both the axis and edge of the feed opening in relation to the plasticizing system axis towards the direction of revolutions of the screw is favorable. DOI : 10.3139/217.3040 En ligne : https://drive.google.com/file/d/18wkwsFGgdV7X8lI-dXqTcJ2orsvgbLFO/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24331
in INTERNATIONAL POLYMER PROCESSING > Vol. XXX, N° 3 (07/2015) . - p. 359-365[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17309 - Périodique Bibliothèque principale Documentaires Disponible The search for improved alternatives in epoxy toughening / William Starner in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 16, N° 6 (06/2009)
PermalinkVersatile speciality plasticisers / Karl Billast in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 202, N° 4568 (01/2012)
PermalinkVOC, smell and plasticisers / Karl B. Flower in INTERNATIONAL LEATHER MAKER (ILM), N° 47 (05-06/2021)
PermalinkWhat type of anti-corrosive plasticizer is applicable for RMC concrete for bridge and road construction applications / Harish Agrawal in PAINTINDIA, Vol. LXXIII, N° 6 (06/2023)
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