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Nanoclay migration and the rheological response of PBAT-LDPE blends / M. Nofar in INTERNATIONAL POLYMER PROCESSING, Vol. 36, N° 3 (2021)
[article]
Titre : Nanoclay migration and the rheological response of PBAT-LDPE blends Type de document : texte imprimé Auteurs : M. Nofar, Auteur ; M. Mohammadi, Auteur ; P. J. Carreau, Auteur Année de publication : 2021 Article en page(s) : p. 287-296 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alliages polymères
Argile
Cloisite
Energie de surface
Morphologie (matériaux)
Nanoparticules
Polybutylène-adipate-téréphtalate
Polyéthylène basse densité
Rhéologie
Tension superficielleIndex. décimale : 668.4 Plastiques, vinyles Résumé : Blends of a poly(butylene adipate-co-terephthalate) (PBAT) and a low density polyethylene (LDPE) (80 wt%/20 wt%) were prepared through a twin screw extruder while incorporating 3 wt% Cloisite 30B (C30B) nanoclay that possessed a much higher affinity with PBAT. The blends were processed through three melt mixing strategies: ( i) direct mixing of all three components, (ii) mixing C30B and PBAT followed by mixing with LDPE, and (iii) mixing C30B and LDPE followed by mixing with PBAT. The rheological properties of each system were determined in small amplitude oscillatory shear (SAOS) experiments. The migration of C30B nanoparticles from the LDPE minor phase towards the PBAT matrix was then monitored in the blend nanocomposites prepared through strategy (iii) via SAOS time sweep experiments. It was firstly understood that the C30B migration could be detected during time sweep SAOS experiments. The migration time was observed to be frequency dependent due to the smaller length scales probed at larger frequencies. Such migration occurred even faster when the SAOS time sweep experiments were conducted at a higher temperature due to the viscosity reduction. Note de contenu : - EXPERIMENTAL : Materials - Melt compounding and blend nanocomposite preparation - Surface energy, interfacial tension, and localization analysis - Morphological analysis - Rheological measurements
- RESULTS AND DISCUSSION : Characteristics of neat polymers and c30b localization - Morphological and rheological properties of the blend and blend nanocomposites - Monitoring C30B migration through SAOS experiments - Relationship between nanoparticle migration, applied frequency, and LDPE viscosityDOI : https://doi.org/10.1515/ipp-2020-4057 En ligne : https://drive.google.com/file/d/1XhPD0BX6SWTIUyaH0mkZ-xOdYeN3qEoS/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36371
in INTERNATIONAL POLYMER PROCESSING > Vol. 36, N° 3 (2021) . - p. 287-296[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23733 - Périodique Bibliothèque principale Documentaires Disponible New additive to enhance surface cleanability / Gururaj Moharir in PAINTINDIA, Vol. LVII, N° 6 (06/2007)
[article]
Titre : New additive to enhance surface cleanability Type de document : texte imprimé Auteurs : Gururaj Moharir, Auteur Année de publication : 2007 Article en page(s) : p. 137-138 Langues : Anglais (eng) Catégories : Acrylates Les monomères acrylates sont un groupe d'esters faisant partie des vinyles, car renfermant une double liaison carbone-carbone et sont utilisés pour former des polyacryliques qui ont de multiples usages.
Energie de surface
Revêtements -- Additifs
Revêtements antisalissures:Peinture antisalissures
SiliconesLes silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki).
Tension superficielleIndex. décimale : 667.9 Revêtements et enduits Résumé : A new silicone-modified crosslinkable acrylate additive has been developed that provides surfaces with easy cleaning characteristics along with many other interesting properties. Note de contenu : - Lotus-effect
- Lotus-effect in coating
- Introduction of a new additive
- Surface energy/ surface tension of the dry film
- Anti-fouling properties
- Practical experiences and applicationsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11482
in PAINTINDIA > Vol. LVII, N° 6 (06/2007) . - p. 137-138[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 008400 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : New era of superhydrophobic coatings Type de document : texte imprimé Auteurs : Suresh Narute, Auteur ; Anuj Agrawal, Auteur Année de publication : 2015 Article en page(s) : p. 65-69 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Angle de contact
Anticorrosion
Composés organiques
Energie de surface
Fluor
Hydrophobie
Nanoparticules
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : Nowadays smart polymers, smart materials, smart coatings are getting a lot of attention in the research field. Amongst them smart coatings are the fastest developing and the most interesting technology. Smart coatings are called as "SMART'? because they respond to environmental changes in a predictable and noticeable manner. The technology discussed in this paper is "Superhydrophobic coating". This effect, was originally observed in the nature (e.g. on lotus leaves), and is important fora wide range of scientific and technological applications, like developing coatings that possess self-cleaning properties, prevention of surface fouling and anti-corrosion. Superhydrophobic surfaces are those whose water contact angle is greaterthan 150° and have low surface energy. Water droplets do not slide, but roll down the superhydrophobic surface, carrying dust along with it and thereby cleaning the surface. The corrosion protection mechanism is related, first, to the reduction of the electrolyte—metal contact area, and second, to the reduction of the corrosion current. Such coatings are also used to reduce leakage currents on the surface of silicon insulators .This paperfocuses on superhydrophobic coatings based on silicone resins, fluoro-organiccompounds and nanomaterials. Note de contenu : - MEASURING CONTACT ANGLE : Young's equation - Wenzel's equation - Cassie-Baxter's equation
- FABRICATION OF SUPERHYDROPHOBIC COATINGS
- APPLICATIONS : Anti-adhesion & self cleaning - Anti-icing - Anti-corrosion - Maritime industries - Power transmission lines - Textiles
- CHALLENGES FACED BY SUPERHYDROPHOBIC COATINGSEn ligne : https://drive.google.com/file/d/1xMcmjmbhegi4oUfjYUGHz4_2EGt9ViMA/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24463
in PAINTINDIA > Vol. LXV, N° 6 (06/2015) . - p. 65-69[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17394 - Périodique Bibliothèque principale Documentaires Disponible New sizing formulation for recycled carbon fibres / Alessandra Passaro in JEC COMPOSITES MAGAZINE, N° 132 (01-02/2020)
[article]
Titre : New sizing formulation for recycled carbon fibres Type de document : texte imprimé Auteurs : Alessandra Passaro, Auteur ; Antonella Tarzia, Auteur ; Luigia Longo, Auteur Année de publication : 2020 Article en page(s) : p. 62-65 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adhésion
Caractérisation
Encollage
Energie de surface
Etalonnage
Fibres de carbone -- Recyclage
MouillabilitéIndex. décimale : 668.4 Plastiques, vinyles Résumé : The application of a sizing formulation on recycled carbon fibres obtained by pyrolysis can significantly enhance their technical and technological properties. CETMA developed a sizing for recycled carbon fibres produced by ELG Carbon Fibre Ltd., aimed at enhancing the fibre/matrix adhesion and handling performance, also taking into account wettability requirements. Note de contenu : - Opportunities and limits of rCFs
- Sizing formulation
- Experimental : Chemical characterization of rCFs - Interfacial fibre/matrix adhesion
- Fibre handling
- Fibre wettability
- Fig. 1 : Comparison between rCFs and vCFs (virgin carbon fibres
- Fig. 2 : IFFS values for RCFs before (unsized) and after (sized) the sizing application
- Fig. 3 : Graphical representation of fibre distribution lengths
- Table 1 : Fibre distribution lengths : A - Unsized from non-woven mat, B - Sized fibres from non-woven mat, - C. unsized fibres before weaving
- Table 2 : Total surface energy for recycled and virgin carbon fibres before and after sizing application
- Table 3 : BET specific surface area for carbon fibres before (unsized) and after (sized) the sizing applicationPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33905
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Code-barres Cote Support Localisation Section Disponibilité 21395 - Périodique Bibliothèque principale Documentaires Disponible New technology for enhancing wood-plastic composites / Kelly Williams in COATINGS TECH, Vol. 4, N° 8 (08/2007)
[article]
Titre : New technology for enhancing wood-plastic composites Type de document : texte imprimé Auteurs : Kelly Williams, Auteur ; Bernard Bauman, Auteur Année de publication : 2007 Article en page(s) : p. 52-57 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Composites à fibres végétales
Energie de surface
Fluoro-oxydation
Polyéthylène haute densité
Revêtements -- Séchage sous rayonnement ultraviolet:Peinture -- Séchage sous rayonnement ultraviolet
Traîtements de surfaceIndex. décimale : 667.9 Revêtements et enduits Résumé : Wood-plastic composites (WPC) are the combination of wood fibers, most commonly wood four waste, and a thermoplastic such as high density polyethylene (HDPE), polypropylene (PP), or PVC. The polymer content is generally 40-50% by weight. WPCs are extruded into profile shapes via continuous extrusion for the building and construction products industry as an alternative to wood and treated wood. Consumers are choosing WPC over wood, even though it costs more, because of lower maintenance requirements and aesthetic appeal. WPC does not require painting, resists warping and termite attack, and is generally resistant to moisture-related issues such as mold development. Note de contenu : - Industry background
- Problems need to be solved
- Technology overview : Surface modification - Coating material and process
- Fig. 1 : Reaction mechanism for fluorooxidation of polyethylene
- Table 1 : Surface energy of WPC before and after fluorooxidation
- Table 2 : ASTM D 3359 cross-hatch adhesionresults
- Table 3 : UV-cured paint performance resultsEn ligne : https://drive.google.com/file/d/1fuQkPKV19s3zJAzxW0AApjIuZNroAukL/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3590
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