High performance moisture cured poly(ether–urethane) amide coatings based on renewable resource (cottonseed oil) / Pawan D. Meshram in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 3 (05/2013)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 10, N° 3 (05/2013) . - p. 331-338 Titre : High performance moisture cured poly(ether–urethane) amide coatings based on renewable resource (cottonseed oil) Type de document : texte imprimé Auteurs : Pawan D. Meshram, Auteur ; Ravindra G. Puri, Auteur ; Amol L. Patil, Auteur ; Vikas V. Gite, Auteur Année de publication : 2013 Article en page(s) : p. 331-338 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Huile de coton Polyéther bloc amide Polyéther uréthane Revêtements:Peinture Tags : 'Revêtement  haute  performance'  'Polyéther-urethane  amide'  'Ressource  renouvelable'  'Huile  végétale'  Huile  coton'  Polyaddition  'Propriétés  mécaniques'  chimiques'  'Résistance  impact'  rayure'  Flexibilité  chimique' Index. décimale : 667.9 Revêtements et enduits Résumé : In this investigation, polyetheramide resin was prepared through the condensation polymerization of N,N-bis (2-hydroxyethyl) cottonseed oil fatty amide (HECOFA) with bisphenol-A. It was further modified by 2,4-toluene diisocyanate (TDI) in 10–30 wt% of polyetheramide to develop a series of moisture curing urethane-modified polyetheramide resins (UMCOPEtA). The synthesized resin was characterized using 1H NMR, 13C NMR, FTIR and solubility in various organic solvents at room temperature. The thermal and curing behavior of the resin was investigated using thermogravimetric analysis and differential scanning calorimetric techniques. The physico-chemical properties such as hydroxyl value, iodine value, specific gravity and mechanical properties like scratch hardness, impact, and flexibility were determined by standard laboratory methods. Coatings of UMCOPEtA resin were prepared on mild steel panels to evaluate chemical resistance performance against acid, alkali, water and xylene. The newly developed UMCOPEtA coatings showed improved hardness, impact, gloss, water and chemical resistance when compared with unmodified polyetheramide coatings, and thus were found to be suitable as a high performance coating material. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of N,N-bis (2-hydroxyethyl) cottonseed oil fatty amide (HECOFA) - Synthesis of cottonseed oil polyeteramid (COPEtA) - Synthesis of urethane-modified polyétheramide (UMCOPEtA) - Preparation and testing of coatings - Characterization - RESULTS AND DISCUSSION : FTIR spectral analysis - NMR spectral analysis - Physico-chemical characterization - Coating properties - Thermal analysis DOI : 10.1007/s11998-012-9449-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-012-9449-z.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18732 [article]

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Study of the performance of polyurethane coatings derived from cottonseed oil polyol / Prashant Narute in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 1 (01/2016)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 13, N° 1 (01/2016) . - p. 171-179 Titre : Study of the performance of polyurethane coatings derived from cottonseed oil polyol Type de document : texte imprimé Auteurs : Prashant Narute, Auteur ; Aruna Palanisamy, Auteur Année de publication : 2016 Article en page(s) : p. 171-179 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse spectrale Analyse thermomécanique dynamique Caractérisation Coton Le coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles). Epoxydation Huile de coton Hydroxylation Polyols Polyuréthanes Revêtements -- Propriétés mécaniques Index. décimale : 667.9 Revêtements et enduits Résumé : Cottonseed oil (CSO) was converted into a polymerizable polyol by in-situ epoxidation and hydroxylation in the presence of water as nucleophile and sulfuric acid as catalyst. This hydroxylated CSO (HCSO) was polymerized with isophorone diisocyanate at different NCO-to-OH ratios to furnish polyurethane coatings of different composition. The mechanical properties of the resulting moisture-cured films were studied. The adhesion, abrasion resistance, impact strength, flexibility, water vapor permeability, and chemical and/or solvent and corrosion resistance of the coatings were investigated. Note de contenu : - EXPERIMENTAL : Characterization - Epoxidation of cottonseed oil - Hydroxylation of epoxidized cottonseed oil - Preparation of crosslinked PU coatings - RESULTS AND DISCUSSION : Spectral analysis of cotton seed oil derivatives epoxidized oil and polyol - Properties of the PU films - Dynamic mechanical thermal analysis - Mechanical properties - Physicochemical properties DOI : 10.1007/s11998-015-9741-9 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9741-9.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25386 [article]

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Synthesis and characterization of UV-curable cellulose acetate butyrate-based oligomers and their cotton fabric coatings / Ozan Gazi Dehmen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 4 (07/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 4 (07/2021) . - p. 1075–1085 Titre : Synthesis and characterization of UV-curable cellulose acetate butyrate-based oligomers and their cotton fabric coatings Type de document : texte imprimé Auteurs : Ozan Gazi Dehmen, Auteur ; Hacen Aysen Onen, Auteur ; Zehra Yildiz, Auteur ; Atilla Güngör, Auteur ; Yalcin Boztoprak, Auteur Année de publication : 2021 Article en page(s) : p. 1075–1085 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Brillance (optique) Butyrate d'acétate de cellulose Caractérisation Coton Le coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles). Enduction Essais (technologie) Huile de coton Oligomères Perméabilité Polymères -- Synthèse Résistance thermique Revêtements -- Propriétés mécaniques Revêtements organiques Textiles et tissus Index. décimale : 667.9 Revêtements et enduits Résumé : In order to improve the thermal stability and flexibility, cellulose acetate butyrate (CAB) was modified with toluene diisocyanate–hydroxyethyl methacrylate (TDI–HEMA) adduct in various molar ratios. The obtained oligomer was characterized by proton nuclear magnetic resonance (1H NMR) and Fourier transform infrared (FTIR) spectroscopies. Gloss, cross-hatch, contact angle, and Taber abrasion tests were all used to investigate the film forming performance of the modified CAB oligomers on glass plates. The UV-cured free films of the synthesized oligomers were examined in terms of the mechanical tests. By using the synthesized CAB oligomers, coating formulations were prepared and applied onto cotton fabrics in order to make the cotton fabrics more durable in outdoor environments. The existence of the coating layer on the fabric surfaces was investigated by scanning electron microscopy (SEM). The coated UV-cured fabrics were evaluated separately in terms of abrasion, thermal conductivity, and air and water vapor permeability properties. Results proved that the oligomer (50%-CAB) in which 50% of the hydroxyl groups of CAB were reacted with TDI–HEMA adduct showed the best mechanical properties with the highest tensile strength and modulus values. Considering the coated fabrics, the least deformation against abrasion, the highest air/water vapor permeability, and the best thermal conductivity were all recorded in 50%-CAB coated sample. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of modified CAB oligomers - Coating applications on cotton fabrics - Characterization - RESULTS AND DISCUSSION : FTIR spectra - Film forming properties on glass layers - Mechanical properties of free films - Table 1 : Sample codes with modification percentages - Table 2 : Gloss, cross-hatch, and contact angle test results of samples on glass plates - Table 3 : Mechanical properties of UV-cured free films of modified CAB oligomers - Table 4 : Abrasion test results of coated UV-cured cotton fabrics for each formulation - Table 5 : Clothing comfort properties of coated UV-cured cotton fabrics for each formulation DOI : https://doi.org/10.1007/s11998-020-00461-5 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00461-5.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36214 [article]

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