Effect of the amount of oxazoline compatibilizer on the mechanical properties of liquid crystalline polymer/polypropylene blends / Shogo Takasuka in INTERNATIONAL POLYMER PROCESSING, Vol. 37, N° 1 (2022)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. 37, N° 1 (2022) . - p. 38-44 Titre : Effect of the amount of oxazoline compatibilizer on the mechanical properties of liquid crystalline polymer/polypropylene blends Type de document : texte imprimé Auteurs : Shogo Takasuka, Auteur ; Tatsuhiro Takahashi, Auteur Année de publication : 2022 Article en page(s) : p. 38-44 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alliages polymères -- propriétés mécaniques Alliages polymères -- Propriétés thermiques Analyse thermique Chimie des surfaces Compatibilité chimique et physique Essais (technologie) Morphologie (matériaux) Oxazoline polymères cristaux liquides Polypropylène Polypropylène greffé anhydride maléique Index. décimale : 668.4 Plastiques, vinyles Résumé : The effect of the amount of 2,2′-Bis(2-oxazoline) on the spectral, thermal, morphological, and tensile properties of polypropylene (PP)/liquid crystalline polymer (LCP)/maleic anhydride grafted PP (PP-g-MAH) blends was investigated. A wholly aromatic LCP having a low melting point, namely a AL-7000 copolyester was used, because it also uses a compatibilizer with a low decomposition temperature. As the amount of 2,2′-Bis(2-oxazoline) increased, the dispersibility of the LCP improved and the tensile properties were improved, but when it was added in excess, a loss in function was observed. In particular, when 0.5 wt% of 2,2′-Bis(2-oxazoline) were added, the tensile strength and elastic modulus were the highest, and cohesive fracture (fracture within the matrix, not at the PP/LCP interface) was observed in the scanning electron microscope image. Note de contenu : - EXPERIMENTAL : Materials - Preparation of blends - Processing - Testing - RESULTS AND DISCUSSON : FTIR spectra - Thermal analysis - Morphology - Mechanical properties - Table 1A : Compositions of PP/LCP blends in presence of compatibilizers - Table 1B : Mol of reactive functional groups in 1 g of composite - Table 2 : Thermal properties of PP/LCP blends En ligne : https://drive.google.com/file/d/1err-wD-RqDtTVjAvuqyZFbCaLEyQOaS-/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38439 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23736	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Epoxidized fatty acid-derived oxazoline in thermoset coatings / David L. Trumbo in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 1 (03/2008)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 5, N° 1 (03/2008) . - p. 107-111 Titre : Epoxidized fatty acid-derived oxazoline in thermoset coatings Type de document : texte imprimé Auteurs : David L. Trumbo, Auteur ; J. T. Otto, Auteur Année de publication : 2008 Article en page(s) : p. 107-111 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Catalyseurs Epoxydation Métaux -- Revêtements Oxazoline Polyacryliques Thermodurcissables Index. décimale : 667.9 Revêtements et enduits Résumé : An oxazoline with an unsaturated side chain was reacted with m-chloroperbenzoic acid in order to convert the unsaturation to oxirane moieties. The conversion of double bonds to oxirane is high provided a significant excess of the perbenzoic acid is used. The conversion was monitored using NMR spectroscopy. The unsaturated oxazoline was reacted with an acid-functional acrylic, and the resulting adduct was reacted with m-chloroperbenzoic acid to epoxidize the pendent unsaturation. Again, a significant excess of the peracid was required to reach high conversion of the double bonds. The epoxidized oxazoline and the modified acrylic were evaluated in thermoset coatings over metal panels. The properties of the films ranged from moderate to good depending on what species was used as a crosslinker. DOI : 10.1007/s11998-007-9040-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-007-9040-1.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3621 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
009979	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Missing link / Kenta Kanaida in ADHESIVES AGE, Vol. 44, N° 8 (08/2001)  

[article]  inADHESIVES AGE > Vol. 44, N° 8 (08/2001) . - p. 25-31 Titre : Missing link : Study indicates oxazoline-functional polymers can be used effectively as waterborne crosslinkers Type de document : texte imprimé Auteurs : Kenta Kanaida, Auteur ; Makoto Mizushima, Auteur Année de publication : 2001 Article en page(s) : p. 25-31 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésifs en phase aqueuse Copolymères Copolymères en émulsion Copolymérisation Groupement carboxyle Oxazoline Polyacryliques Polyaddition Réticulants Réticulation à l'humidité Tests de toxicité Index. décimale : 668.3 Adhésifs et produits semblables Résumé : Waterborne reactive polymers that contain pendant 2-oxazoline groups were prepared by radical copolymerization of 2-alkenyl-2-oxazoline and unsaturated co-monomers. By varying the composition of co-monomers, a series of emulsion polymers with the various glass transition temperatures (Tg) or water-soluble polymers with high oxazoline contents were prepared. The crosslinking reactions of these oxazolidine-functional polymers with waterborne carboxylated polymers were examined. As a result, the oxazoline-functional polymers show sufficient reactivity and stability to be used as a low-toxic, one-packed crosslinker providing improved properties for waterborne carboxylated polymer. The pH value of the formulation has an important effect on its reaction rate and pot life. It was also found that the mechanical property of cured film can be controlled by selecting the composition of backbone polymer in the oxazoline-functional polymer. Furthermore, the performances of waterborne acrylic adhesives using these oxazoline-functional polymers as the crosslinker were discussed. Note de contenu : - RESULTS & DISCUSSION : Preparation of oxazoline-functional polymers - Reaction of oxazoline-functional polymer with carboxylated acrylic-styrene copolymer emulsion - Reaction temperature - Effect of neutralization of carboxyl group - Hardenable pressure sensitive adhesive - Toxic study of oxazoline-functional polymer En ligne : https://drive.google.com/file/d/1niuCOQ1TBQj5ZRStST1MWpVQbIQjQ-uy/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19940 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
001461	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Modified low molecular weight acrylics in coating application : synthesis and property evaluation / H. A. A. Rasoul in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 1 (03/2008)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 5, N° 1 (03/2008) . - p. 113-121 Titre : Modified low molecular weight acrylics in coating application : synthesis and property evaluation Type de document : texte imprimé Auteurs : H. A. A. Rasoul, Auteur ; G. W. Rinke, Auteur ; J. P. Wiruth, Auteur ; A. E. Trevino, Auteur ; B. E. Mote, Auteur ; M. A. Langer, Auteur ; David L. Trumbo, Auteur Année de publication : 2008 Article en page(s) : p. 113-121 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acides gras Métaux -- Revêtements Oxazoline Polyacryliques Polymérisation par oxydation Revêtements -- Propriétés chimiques Revêtements en phase aqueuse Index. décimale : 667.9 Revêtements et enduits Résumé : Low molecular weight resins containing relatively high levels of acrylic acid were converted to oxidatively curable materials by reacting the carboxylic acid groups with oxazoline functional alkenes. The oxazolines were obtained by reacting fatty acid with 2-amino-2-methyl-1-propanol. The oxazolines were then reacted with the acrylic resins at elevated temperature. Relatively high yields of the desired reaction products were obtained in relatively short reaction times. The resulting resins were formulated into aqueous coatings and films were made over metal substrates. The films were cured oxidatively and evaluated for property development. The films had good general solvent resistance but poor resistance to dilute sodium hydroxide. DOI : 10.1007/s11998-007-9068-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-007-9068-2.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3622 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
009979	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Oxazoline-based crosslinking reaction for coatings / Philipp Knospe in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 5 (09/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 5 (09/2021) . - p. 1199-1207 Titre : Oxazoline-based crosslinking reaction for coatings Type de document : texte imprimé Auteurs : Philipp Knospe, Auteur ; Patrick Böhm, Auteur ; Jochen S. Gutmann, Auteur ; Michael Dornbusch, Auteur Année de publication : 2021 Article en page(s) : p. 1199-1207 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse thermomécanique dynamique Auto-réticulation Catalyseurs Oxazoline Polyisocyanates Polyuréthanes Réseaux polymères Réticulants Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : Nowadays, coating materials must meet high demands in terms of mechanical, chemical and optical properties in all areas of application. Amongst others, amines and isocyanates are used as crosslinking components for curing reactions, meeting the highly demanding properties of the coatings industry. In this work, a new crosslinking reaction for coatings based on oxazoline chemistry is investigated with the objective to overcome disadvantages of established systems and fulfill the need for sustainable coating compounds. The oxazoline-group containing resin, synthesized from commercially available substances, undergoes cationic self-crosslinking polymerization to build up a network based on urethane and amide moieties. NMR-, IR- and ES-mass spectroscopy are suitable techniques to characterize the synthesized oxazoline monomers, which are linked to polyisocyanates and polymerized afterwards via self-polymerization. The progress of crosslinking is followed by changes in IR spectra and by rheological measurements to calculate time dependent values for storage and loss modulus. The glass transition temperature of the resulting coating is determined, too. Furthermore, sol–gel-analysis is performed to determine the degree of crosslinking. After application on steel and aluminium panels, application tests are performed. In addition to excellent adhesion to the substrate, the polymer network shows promising mechanical properties and with that it could represent a new technology for the coatings industry. Note de contenu : - Raw materials - Analytical methods - Synthesis of the compounds - Polyisocyanate-oxazoline adduct 2 - Application testing - Table 1 : Screening of different catalysts using curing temperatures 190°C and 160°C - Table 2 : Coating properties at different curing temperatures using various catalysts DOI : https://doi.org/10.1007/s11998-021-00479-9 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00479-9.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36425 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
22991	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Use of a fatty acid oxazoline derivative as a reactive diluent / Y. Berry-Walker in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B4 (12/2005)  

Permalink

---

1 (1 - 6 / 6)