ACOMP monitors 2-ethylhexyl acrylate and its comonomer-based reactions in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4647 (12/2018)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 208, N° 4647 (12/2018) . - p. 32-35 Titre : ACOMP monitors 2-ethylhexyl acrylate and its comonomer-based reactions Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 32-35 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : 2-Ethylhexyl acrylate Adhésifs sensibles à la pression Chromatographie sur gel Copolymères -- Synthèse Homopolymères Polymérisation Rhéologie Index. décimale : 668.3 Adhésifs et produits semblables Résumé : The author discusses the rol of its ACOMP online monitoring system in monitoring the polymerisation of two pressure sensitive adhesives. Note de contenu : - Understanding the optical properties of monomers and polymers - ACOMP configured to monitor the synthesis of poly2EHA and poly2EHA-AA - Reaction methodology - Acomp yields real-time results on the polymerisation of 2-ethylhexyl acrylate - GPC characterisation - Fig. 1 : ACM RI data for 2EHA monomer and poly2EHA - Fig. 2 : UV spectra of 2EHA, acrylic acid and poly2EHA - Fig. 3 : Raw UV, viscosity and SLS signals of homopolymer 2EHA batch polymerisation - Fig. 4 : Raw UV, viscosity, and SLS data from copolymer 2EHA and AA batch polymerisation - Fig. 5 : Polymer concentration at UV detector - Fig. 6-7 : Intrinsic viscosity vs polymer concentration - Fig. 8 : GPC analysis - Fig. 9 : GPC analysis continued - Table 1 : Reaction conditions for each polymerisation - Table 2 : ACOMP monitored results of intrinsic viscosity and molecular weight - Table 3 : GPC analysis results En ligne : https://drive.google.com/file/d/1svtIgwRLdKQRHXbkcAUCg0zwTs8EPy6S/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31517 [article]

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Application of Y-shaped polyurethane and polyacrylic acid as a complex retanning agent in aldehyde-tanned goat leather / Shuangquan Lai in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 11 (11/2017)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXII, N° 11 (11/2017) . - p. 367-376 Titre : Application of Y-shaped polyurethane and polyacrylic acid as a complex retanning agent in aldehyde-tanned goat leather Type de document : texte imprimé Auteurs : Shuangquan Lai, Auteur ; Yong Jin, Auteur ; Hanping Li, Auteur ; Lei Zhang, Auteur ; Xin Yin, Auteur Année de publication : 2017 Article en page(s) : p. 367-376 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acide polyacrylique Copolymères -- Synthèse Copolymères séquencés Cuirs et peaux -- Analyse Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux -- Propriétés organoleptiques Cuirs et peaux -- Propriétés physiques Cuirs et peaux de chèvres Glutaraldéhyde Morphologie (matériaux) Polymères amphiphiles Polyuréthanes Retannage Tannage organique Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : A kind of Y-shaped amphiphilic block polyurethane copolymers (PUGs) with different molecular weights were successfully synthesized to be used as retanning agent combined with polyacrylic acid (PAA) for modified glutaraldehyde tanned goatskin. The structures of resulting products were characterized by FTIR, and the molecular weights of products were measured with GPC. The application performances were investigated by measuring the organoleptic and physical mechanical properties of resulting leathers according to the alone or combined use of PUG and PAA, the molecular weight of PUG, and the offer percentage of retanning agent. The best performance was found in the leather retanned by PUG750 and PAA complex retanning agent at the total offer percentage of 4 wt%. Finally, the free formaldehyde contents in the leathers retanned with 4 wt% PUG750 and PAA at different pH conditions were analyzed with acetyl acetone colorimetric method. The mechanical properties as well as the fibers morphologies of the experimental and control groups were also investigated. The results demonstrated that when the pH value at the later stage of retanning process was controlled at 4.0 or 3.0, the free formaldehyde content was significantly reduced by 20.3% or 38% respectively ; and the physical mechanical properties of leathers were also very excellent to meet the performance requirements of goatskin garment leathers. According to these results, the method for using PUG and PAA as a complex retanning agent might be a good choice in chrome-free tanning process. Note de contenu : - MATERIALS AND METHODS : Materials - Synthesis of Y-shaped amphiphilic block polyurethane copolymers (PUGs) - Synthesis of polyacrylic acid (PAA) - Fourier Transform Infrared Spectra (FTIR) - Gel permeation chromatography (GPC) - Application of polyurethanes and polyacrylic acid - Analysis of leather properties - Scanning electron microscopy analysis - Determination of free formaldehyde contents in leathers - RESULTS AND DISCUSSION : Synthesis of polyurethane copolymers and polyacrylic acid - Effect of different retanning agents on the organoleptic and physical properties of leathers - Effect of the molecular weight of PUG on the organoleptic and physical properties of leathers - Effect of the amount of complex retanning agent on the organoleptic and physical properties of leathers - Application of the complex retanning agent under different pH conditions En ligne : https://drive.google.com/file/d/1n0hhgDSLoOspbiCVezGLJhDkXewQevzZ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29395 [article]

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Blue core-shell nanospheres prepared by dyeing poly(styrene-co-methacrylic acid) dispersions / Kuanjun Fang in COLORATION TECHNOLOGY, Vol. 131, N° 6 (12/2015)  

[article]  inCOLORATION TECHNOLOGY > Vol. 131, N° 6 (12/2015) . - p. 458-463 Titre : Blue core-shell nanospheres prepared by dyeing poly(styrene-co-methacrylic acid) dispersions Type de document : texte imprimé Auteurs : Kuanjun Fang, Auteur ; Xiaojie Xua, Auteur ; Yuqing Cai, Auteur ; Longyun Hao, Auteur ; Jianbo Zhang, Auteur ; Yunguo Zhao, Auteur Année de publication : 2015 Article en page(s) : p. 458-463 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Copolymère styrène/acide méthacrylique Copolymères -- Synthèse Nanoparticules Polymères en émulsion Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : Blue poly(styrene-co-methacrylic acid) nanospheres were prepared by dyeing polymer dispersions with CI Disperse Blue 56. The coloured nanospheres had a clear shell with a thickness of 32.5 nm. The average diameter of the nanospheres increased from 288 to 353 nm, and the glass transition temperature was raised from 109.6 to 117.9 °C after coloration. Ultraviolet-visible absorption spectra, transmission electron microscopy, and differential scanning calorimetry show that the amino and/or hydroxyl groups of the disperse dyes formed hydrogen bonds with the carboxyl groups on the surfaces of the nanospheres during the coloration process, resulting in increased particle sizes and shell layers. The dye content increased almost linearly with increasing dye concentrations or dyeing temperatures within a certain range. By increasing the pH of the dyeing bath from 4 to 5, the dye content increased sharply from 0.68 to 1.49% because of the ionisation of the carboxyl groups of the macromolecules. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of poly(styrene-co-methacrylic acid) nanosphere dispersions - Preparation and purification of coloured poly(styrene-co-methacrylic acid) nanospheres - Dye contents of the coloured nanospheres - Ultraviolet-visible measurements - Transmission electron microscopy - Differential scanning calorimetry - RESULTS AND DISCUSSION : Morphology of the poly(styrene-co-methacrylic acid) nanospheres - Glass transition temperatures - Ultraviolet-visible spectra of the coloured nanospheres - Dye contents of the coloured poly(styrene-co-methacrylic acid) nanospheres DOI : 10.1111/cote.12181 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12181 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25115 [article]

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Characterisation and application of polyurethane copolymers grafted with photoluminescent dyes / Yong Chan Chung in COLORATION TECHNOLOGY, Vol. 130, N° 4 (08/2014)  

[article]  inCOLORATION TECHNOLOGY > Vol. 130, N° 4 (08/2014) . - p. 305-313 Titre : Characterisation and application of polyurethane copolymers grafted with photoluminescent dyes Type de document : texte imprimé Auteurs : Yong Chan Chung, Auteur ; Kiseok Yang, Auteur ; Jae Won Choi, Auteur ; Byoung Chul Chun, Auteur Année de publication : 2014 Article en page(s) : p. 305-313 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse thermique Caractérisation Colorants Copolymères -- Propriétés mécaniques Copolymères -- Synthèse Copolymères greffés Effet mémoire de forme Electrofilature Essais (technologie) Essais dynamiques Photoluminescence Polyuréthanes Traction (mécanique) Index. décimale : 667.9 Revêtements et enduits Résumé : Photoluminescent dyes (aminofluorene, naphthalimide, naphtholbenzein, or phenosafranine) were grafted to polyurethane using an allophanate linkage. The photoluminescence properties and the shape recovery effects of polyurethane samples were investigated. The polyurethane was composed of 4,4?-methylenebis(phenylisocyanate), poly(tetramethyleneglycol), and 1,4-butanediol. The dyes were linked through an extra 4,4?-methylenebis(phenylisocyanate) and the carbamate moiety of the polyurethane chains. Polyurethanes with various dye contents were characterised, and the shape recovery and photoluminescence properties were compared. In the case of the tensile mechanical properties, the highest maximum stress was 56 MPa, and the strain remained > 1500% for the entire series. The shape recovery improved as the test cycle was repeated, with up to 100% recovery being achieved, but shape retention decreased as the dye content increased. Finally, the photoluminescence of the polyurethanes was demonstrated by a luminescent light-emission test, together with pH indication capability and the preparation of non-woven fibre using the electrospinning method. Note de contenu : - EXPERIMENTAL : Materials - Polymer synthesis - Crosslink density - Electrospinning - Characterisation - Shape-memory test - RESULTS AND DISCUSSION : Synthesis and structure of PU - IR and thermal analysis - Crosslink density and viscosity - Tensile mechanical properties - Shape-memory effect - Luminescence of PU - Electrospinning DOI : 10.1111/cote.12097 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12097 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21783 [article]

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Les COC font recette chez Ticona et Nippon Zeon / Jean-Philippe Forest in CAOUTCHOUCS & PLASTIQUES, N° 772 (11/1998)

[article]  inCAOUTCHOUCS & PLASTIQUES > N° 772 (11/1998) . - p. 33-34 Titre : Les COC font recette chez Ticona et Nippon Zeon Type de document : texte imprimé Auteurs : Jean-Philippe Forest, Auteur Année de publication : 1998 Article en page(s) : p. 33-34 Langues : Français (fre) Catégories : Copolymères -- Propriétés optiques Copolymères -- Synthèse Copolymères d'oléfines cycliques Index. décimale : 668.4 Plastiques, vinyles Résumé : Après plusieurs années d'incertitudes quant à son devenir, la production de co-polymère cyclo-oléfine passe finalement au stade industriel. Note de contenu : - Tableau 1 - Historique des développements des COC - Tableau 2 - Principales caractéristiques du Topas - Fig. 1 - Synthèse des COC Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24061 [article]

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Copolymère a-acétoxystyrènes / Styrènes substitués : Synthèses. Caractérisation. Etudes diélectriques / Saad Allah Kawaye / 1980

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Copolymères éthylène-hexène-1 : synthèse, caractérisation, étude de quelques propriétés / Brigitte Michel-Florin

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A durable and multifunctional antifog, antifrost, and self-cleaning/oil repellant UV curable coating based on poly(sorbitol-co-isophorone-co-ethyleneglycol)acrylate / Dhiraj S. Kaikade in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 3 (05/2024)  

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Effect of acrylation on the properties of waterborne epoxy : evaluation of physicochemical, thermal, mechanical and morphological properties / Sukanya Pradhan in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 3 (05/2018)  

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Effects of NCO:OH ratio and HEMA on the physicochemical properties of photocurable poly(ester-urethane)methacrylates / Ganesh S. Bhusari in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 3 (05/2015)  

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Effects of polymeric microcapsules on self-healing composites reinforced with carbon fibers : a comparative study / Naveen Veeramani in INTERNATIONAL POLYMER PROCESSING, Vol. 38, N° 4 (2023)  

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Facile fabrication of durable superhydrophobic SiO2/polyacrylate composite coatings with low nanoparticle filling / Yanfen Huang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 5 (09/2020)  

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Des hybrogels injectables pour réparer le cerveau / Thomas Trimaille in L'ACTUALITE CHIMIQUE, N° 451 (05/2020)  

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Hydrophilicity-hydrophobicity adjustable polymer-modified surfaces from one-step dip-coating method / Xing Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 4 (07/2024)  

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Imidization of styrene-maleic anhydride copolymer for dispersing nano-SiO2 in water / Tao Xue in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 6 (11/2023)  

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A new approach to correlate emission of free formaldehyde of urea formaldehyde resin synthesised under different reaction conditions / Tirthankar Jana in PAINTINDIA, Vol. LXV, N° 4 (04/2015)  

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New process controls polymer development / Matthias Haeussler in PERSONAL CARE EUROPE, Vol. 6, N° 1 (02/2013)  

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Novel bio-based poly(vinylether)s for coating applications / Bret J. Chisholm in COATINGS WORLD, Vol. 20, N° 9 (09/2015)

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Part 1 : Synthesis principle and properties / Klaus-Uwe Koch in ADHESION - ADHESIVES + SEALANTS, N° 1/2015 (2015)  

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Poly(N-acryloyl ciprofloxacin-co-acrylic acid)-incorporated waterborne polyurethane leather coating with long-lasting antimicrobial property / Jinming Chang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 1 (01/2017)  

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