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Synthesis of xylitol-based hyperbranched polyurethane acrylate and its application in self-matting acrylate coatings / Ruijun Lin in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 5 (09/2023)
[article]
Titre : Synthesis of xylitol-based hyperbranched polyurethane acrylate and its application in self-matting acrylate coatings Type de document : texte imprimé Auteurs : Ruijun Lin, Auteur ; Xingshan Yin, Auteur ; Huameng Liu, Auteur ; Lijing Chen, Auteur ; Jianxin Wu, Auteur ; Liang Liu, Auteur ; Yuxin Gu, Auteur ; Yong Li, Auteur ; Xiaofeng Lin, Auteur ; Wenjing Lin, Auteur ; Guobin Yi, Auteur Année de publication : 2023 Article en page(s) : p. 1579-1594 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Agent mattant
Caractérisation
Copolymère uréthane acrylate
Copolymères -- Synthèse
Formulation (Génie chimique)
Polyacryliques
Polymères ramifiés
Potentiel zeta
Revêtements -- Propriétés mécaniques
Revêtements en phase aqueuse
Stabilité thermique
Taille des particules
XylitolIndex. décimale : 667.9 Revêtements et enduits Résumé : Self-matting acrylate has attracted much interest due to excellent weather resistance, hardness, water resistance, and chemical resistance. However, the poor mechanical properties of acrylate limit its application in coatings. To overcome this problem, a series of self-matting acrylate emulsions (SMAE) modified by xylitol-based hyperbranched urethane acrylate (HP-IH) were successfully synthesized. The results revealed that the amount of emulsifier was the primary factor affecting the gloss of the films. Upon the incorporation of HP-IH, the elongation at break and fracture energy of the SMAE films were significantly improved by 52.6% and 59.6%, respectively, due to the internal plastic effect and increased crosslink density induced by HP-IH. The S-2-1.5 sample exhibited the excellent comprehensive performance, i.e., tensile strength of 12.7 MPa, elongation at break of 952%, fracture energy of 71.1 MJ/m3, adhesion of 5B, temperature of 5% weight loss at 350 °C, and gloss at 60° of 14.8, respectively, indicating its great application potential in the field of low-gloss coatings. Note de contenu : - MATERIALS : Synthesis of hydroxyl-terminated hyperbranched polyester (HP-OH) - Synthesis of xylitol-based hyperbranched urethane acrylate (HP-IH) - Synthesis of self-matting acrylate emulsion (SMAE) - Preparation of self-matting acrylate films - Characterization
- RESULTS AND DISCUSSION : Chemical structural characterization
- Table 1 : Basic formulations for the preparation of self-matting acrylate emulsion
- Table 2 : Average particle size and zeta potential of SMAE with different amounts of HP-IH
- Table 3 : Thermal stabilities of the SMAE films
- Table 4 : Dynamic mechanical properties of the SMAE films
- Table 5 : Comprehensive properties of SMAEDOI : https://doi.org/10.1007/s11998-023-00764-9 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00764-9.pdf?pdf=button Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39973
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 5 (09/2023) . - p. 1579-1594[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24242 - Périodique Bibliothèque principale Documentaires Disponible Technological scenario for green and sustainable architectural coatings / Vaibhav J. Dave in PAINTINDIA, Vol. LXIV, N° 8 (08/2014)
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Titre : Technological scenario for green and sustainable architectural coatings Type de document : texte imprimé Auteurs : Vaibhav J. Dave, Auteur ; Rachana S. Surana, Auteur Année de publication : 2014 Article en page(s) : p. 56-70 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chimie écologique
Composés organiques -- Synthèse
Composés organiques volatils
Copolymère éthylène acétate de vinyle
Copolymères -- Synthèse
Durée de vie (Ingénierie)
Monomères
Polyalkydes
Polymères en émulsion
Revêtements en bâtiment:Peinture en bâtimentIndex. décimale : 667.9 Revêtements et enduits Résumé : Global concerns of environmental pollution and greenhouse gas (GHG) emission has led growing legislative stringency to be more tightened in present scenario. Increased consumer/user awareness towards green and sustainable chemistry is a demanding factor for major coatings and raw material suppliers to direct their efforts, either in the area of reformulating their existing product formulations or adopt new approaches to meet the requirements. Architectural coatings occupy around 55% portion of the total global coating consumption. Ultra low and Zero VOC coatings with low odor are the need of the hour for sustaining the business as well as future of the coating industry. This review article highlights the progress in the area of designing green architectural coatings with special focus on water based paints including the processing and chemistry of emulsion polymers viz. acrylics, VeoVa, EVA and waterborne alkyd technology for glossy finishes. Some critical paint ingredients which are major contributors of VOC like coalescing aids, rheology modifiers, surfactants and other additives are also being addressed with reference to legislative aspects. Further alternatives over depleting petro-products such as biochemicals (bio- monomers) and renewable sources of raw materials to ensure sustainability are discussed. Note de contenu : - GREEN AND SUSTAINABLE IN COATINGS CONTEXT
- APPROACHES AND CRITERIA FOR MAKING COATINGS A GREEN/SUSTAINABLE PRODUCT : 1. VOC and its impact - 2. Why is VOC a major concern ? - 3. Measurement of VOc in paints - 4. Persistence of VOC - 5. VOC regulations
- VOC REDUCTION IN ARCHITECTURAL PAINT : 1. Strategies to reduce VOCs in the binder - 2. Reducing of free monomers from the binder - 3. Increasing extent of monomer conversion - 4. Processing changes to remove unreacted monomers - 5. Coalescing waters - 6. Green Trends in formulation acids - 7. Synthesis of vinyl acetate and ethylene - 8. Synthesis of various acrylic monomers - 9. Waterborne alkyd resin - 10. Vegetable oil macromonomers (VOMM)En ligne : https://drive.google.com/file/d/11YeABshpHoemgUXuVS5u9fCfLm7eSw1J/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22106
in PAINTINDIA > Vol. LXIV, N° 8 (08/2014) . - p. 56-70[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16516 - Périodique Bibliothèque principale Documentaires Disponible The best of both systems : Improving poly(urethane-acrylate)hybrid coatings using bio-based 1,3 propanediol / Michael Shen in EUROPEAN COATINGS JOURNAL (ECJ), N° 1 (01/2021)
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Titre : The best of both systems : Improving poly(urethane-acrylate)hybrid coatings using bio-based 1,3 propanediol Type de document : texte imprimé Auteurs : Michael Shen, Auteur ; W. Curtis Anderson, Auteur ; Xianghong Xu, Auteur ; Yun Zhu, Auteur ; Guiyou Wang, Auteur Année de publication : 2021 Article en page(s) : p. 34-39 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biomatériaux
Copolymère uréthane acrylate
Copolymères -- Propriétés mécaniques
Copolymères -- Synthèse
Polymères en émulsion
Polytriméthylène éther glycol
Polyuréthanes
Propanediol
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Poly(urethane-acrylate) (PUA) hybrid dispersions were successfully synthesised through an in situ soap-free emulsion polymerisation of acrylic monomers by using water-borne polyurethanes (WPUs) as seed emulsions. Introducing polyacrylate into WPU dispersion seffectively improves their mechanical properties and alkali resistance. Note de contenu : - Poly(trimethylene ether) glycol offers unique mechanical properties
- Excellent storage and mechanical stability
- Dynamic mechanical properties
- Bio-based PO3G improves mechanical properties
- Explanation of coating properties
- Greater understanding of how to improve coating performance
- Table 1 : Physical properties of WPU and PUA dispersions
- Table 2 : WPU and PUA coating propertiesEn ligne : https://drive.google.com/file/d/1nsHufqzk0UbcNfBkbodQNd-b2c3pF9FP/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35839
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 1 (01/2021) . - p. 34-39[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22760 - Périodique Bibliothèque principale Documentaires Disponible The influence of chemical reaction conditions upon poly(styrene-methyl methacrylate-crylic acid) synthesis : Variations in nanoparticle size, colour and deposition methods / Rui D. V. Fernandes in COLORATION TECHNOLOGY, Vol. 136, N° 2 (04/2020)
[article]
Titre : The influence of chemical reaction conditions upon poly(styrene-methyl methacrylate-crylic acid) synthesis : Variations in nanoparticle size, colour and deposition methods Type de document : texte imprimé Auteurs : Rui D. V. Fernandes, Auteur ; Pedro Gomes, Auteur ; Andrea Zille, Auteur ; Antonio Pedro Souto, Auteur Année de publication : 2020 Article en page(s) : p. 101-109 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chimie textile
Copolymère styrène-méthacrylate de méthyle-acide crylique
Copolymères -- Synthèse
Latex
Lumière -- Diffusion
Polyamide 66
Polymérisation en émulsion
Potentiel zeta
Réactions chimiques
Textiles et tissusIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Monodisperse latex nanospheres of poly(styrene-methyl methacrylate-acrylic acid) with different sizes were synthetised by soap-free emulsion copolymerisation and applied onto polyamide 6,6 fabrics by two methods, ie, gravitational sedimentation and dip-drawing. Different-sized nanospheres were synthetised by varying temperature and stirring velocity as reaction parameters. Scanning electron microscopy and scanning transmission electron microscopy were used to evaluate nanosphere sizes and deposition structures. The results showed two different nanosphere structural arrangements on the fabric surface, a hexagonal packed centre structure in the even surfaces and a square arrangement in the out-of-plane surfaces. Different colours were observed according to particle size, namely, violet (ca . 170 nm), blue (ca . 190 nm), green (ca . 210 nm), yellow (ca . 230 nm) and red (ca . 250 nm). An iridescence effect was also observed, displaying different colours at different observation angles. By controlling the size of the nanospheres it was possible to obtain different, brilliant and iridescent colours. Using different nanosphere sizes it was possible to obtain different interplanar distances and to control the light scattering in the crystalline lattice planes, obtaining Bragg diffraction patterns. Note de contenu : - Materials
- Preparation of monodisperse P(St-MMA-AA) composite nanospheres
- Fourier Transform-infrared spectroscopy with attenuated total reflectance
- Dynamic light scattering and zeta potential measurements
- Deposition of PCs by the dip-drawing method
- Scanning electron microscopy and scanning transmission microscopy
- Optical microscopy
- Diffuse reflectance spectroscopy
- Glossmeter analysis
- PhotographsDOI : https://doi.org/10.1111/cote.12452 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34229
in COLORATION TECHNOLOGY > Vol. 136, N° 2 (04/2020) . - p. 101-109[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21751 - Périodique Bibliothèque principale Documentaires Disponible