Synthesis and characterization of novel water-based poly(urethane-imide) nanodispersions / Baharak Pooladian in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 3 (05/2018)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 3 (05/2018) . - p. 643-647 Titre : Synthesis and characterization of novel water-based poly(urethane-imide) nanodispersions Type de document : texte imprimé Auteurs : Baharak Pooladian, Auteur ; Mir Mohammad Alavi Nikje, Auteur Année de publication : 2018 Article en page(s) : p. 643-647 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Chimie analytique Copolymères en émulsion Diisocyanate d'hexaméthylène Dispersions et suspensions Polyuréthane-imide Polyuréthanes Rhéologie Taille des particules Index. décimale : 667.9 Revêtements et enduits Résumé : Poly(urethane-imide) nanodispersions were synthesized in four steps, as described below. In the first step, polyurethane prepolymer was prepared by the reaction of hexamethylene diisocyanate and polypropylene glycol in the presence of a catalytic amount of dibutyltin dilaurate. In the second step, poly(urethane-imide) prepolymer was prepared by the reaction of synthesized polyurethane prepolymer in the first step with pyromellitic dianhydride in dimethylformamide. In the third step, the prepared poly(urethane-imide) (PUI) reacted with 2,2-bis (hydroxymethyl) propionic acid, and the reaction completed in the last step which involved neutralization and dispersion in water, where acidic poly(urethane-imide) was neutralized by the addition of triethylamine. The prepared poly(urethane-imide) dispersions were characterized by fourier transform infrared spectrometry, proton nuclear magnetic resonance spectroscopy (1HNMR), thermogravimetric analysis, and dynamic laser scattering. A series of PUI dispersions with 30 wt% solid content, viscosities of 9 ± 1 cps, and particle sizes of 78–133 nm range were prepared and characterized. Note de contenu : - EXPERIMENTAL : Materials - Measurements - Synthesis of water-based poly(urethane-imide) nanodispersions - RESULTS AND DISCUSSION : FTIR spectra analysis - HNMR analysis - TGA analysis - DLS analysis - Viscosity DOI : 10.1007/s11998-017-0047-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-0047-6.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30760 [article]

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