Paint and coatings : thinking beyond decoration and protection for betterment of society and human beings / Ritesh A. Bhavsar in PAINTINDIA, Vol. LXV, N° 10 (10/2015)  

[article]  inPAINTINDIA > Vol. LXV, N° 10 (10/2015) . - p. 53-72 Titre : Paint and coatings : thinking beyond decoration and protection for betterment of society and human beings Type de document : texte imprimé Auteurs : Ritesh A. Bhavsar, Auteur ; Kirankumar M. Nehete, Auteur ; Avinash Yashwant Sardesai, Auteur Année de publication : 2015 Article en page(s) : p. 53-72 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agriculture Alimentation Conduction électrique Economies d'énergie Electronique -- Matériaux Élution L'élution est un procédé permettant de mettre en solution (dite éluée) un composé adsorbé à l'aide d'un solvant nommé l'éluant. L'élution est notamment utilisée en chromatographie en phase liquide et en chromatographie sur couche mince (CCM). Elle est également utilisée en immuno-hématologie pour récupérer, dans un éluat, un anticorps fixé spécifiquement sur des hématies. Energie -- Stockage Ferroélectricité Informatique Isolation acoustique Matériaux -- Propriétés acoustiques Matériaux -- Propriétés fonctionnelles Pollution -- Lutte contre Répulsifs (chimie) Revêtements:Peinture Sources de lumière Technologie médicale Wifi Le Wi-Fi ou wifi est un ensemble de protocoles de communication sans fil régis par les normes du groupe IEEE 802.11 (ISO/CEI 8802-11). Un réseau Wi-Fi permet de relier par ondes radio plusieurs appareils informatiques (ordinateur, routeur, smartphone, décodeur Internet, etc.) au sein d'un réseau informatique afin de permettre la transmission de données entre eux. Index. décimale : 667.9 Revêtements et enduits Résumé : People paint their house for protection and beautify their home. "Paint" and "Beauty" are somewhat synonymous. But rapid technological advancement has increased the functionality of paint beyond protection and aesthetic value. Now in this 21st century a paint or coating can do a lot more than just decoration and protection. This paper describes the various uses of paints other than decoration and protection such as in electronics, energy, food, agriculture, environment friendly coating, ect. This innovative approach of coating is described in brief in this paper. Note de contenu : - ENERGY CONSERVATION AND HARVESTING : Paintable battery - Functional coating for energy saving and generating purpose - Keep cool the homes and save energy - Solar paint - New and environmentally friendly route for artificial photosynthesis - COATING FOR FOOD AND AGRICULTURE : Edible coating - Use in water harvesting - Seed treatment - Coloring and protecting the nature - Coloring the nature - PAINTABLE ELECTRONICS : LCD paint - Conductive paint - Conformal coating - Paintable transistors - Paintable lasers - Paintable ferroelectrics - Paintable computer - OTHER APPLICATIONS : Paint that creates sound - Paint that absorbs sound - Insects/mosquito repellent paints - Pollution controlling paint - Invisible paint - WIFI paint - Paint in healthcare : graphene coat bandages - Drug eluting coating - Light emitting paint En ligne : https://drive.google.com/file/d/1IF8aVJbZPPPmS4L138wpJdVSfG-dS8Y_/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24832 [article]

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Rheological approach to select most suitable associative thickener for water-based polymer dispersions and paints / Ritesh A. Bhavsar in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 4 (07/2019)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 4 (07/2019) . - p. 1089-1098 Titre : Rheological approach to select most suitable associative thickener for water-based polymer dispersions and paints Type de document : texte imprimé Auteurs : Ritesh A. Bhavsar, Auteur ; Kirankumar M. Nehete, Auteur Année de publication : 2019 Article en page(s) : p. 1089-1098 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Epaississants Latex Polymères en émulsion Polyuréthane éthoxylé modifié de façon hydrophobe Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs Rhéologie Index. décimale : 667.9 Revêtements et enduits Résumé : In the 1980s, a new class of thickeners, i.e., associative thickener (AT), was introduced for water-based coatings to improve their rheology. Principally, they work by associating with polymer particles present in the paint. Manufacturers of ATs provide some generic guidelines to choose them based on economy, regulatory restrictions, and polymer type; however, it is very difficult to choose suitable ATs until and unless their interactions with polymer particles are studied by rheology. This article focuses on developing a rheological approach to identify a suitable AT for a paint formulation. In this approach, a rheology viscosity curve was used on AT–emulsion polymer mix and AT–emulsion polymer–surfactant mix to short-list a suitable AT. Subsequently, the shortlisted ATs were tested in the paint formulation to study their efficacy. Commonly used, hazardous air pollutants (HAPs)-free, commercially available ATs, viz. hydrophobically modified ethoxylated urethane thickener (HEUR) and hydrophobically modified poly(acetal- or ketal-polyether) thickener (HMPE), were selected to study their interaction with a unique surfactant-stabilized acrylic–polyurethane hybrid emulsion. A range of acrylic–polyurethane hybrid emulsions were prepared by increasing the polyurethane content in the emulsion. As the polyurethane content increased in the emulsion polymer, the thickening efficiency of AT decreased. Note de contenu : - EXPERIMENTAL : Materials and characterization - Preparation of emulsion-AT blends with addition of ammonium salt of polycarboxylic acid and octyl phenol ethoxylated surfactant - Preparation of paint - Rheological characterization - RESULTS AND DISCUSSION : Sythesis and characterization of pure latexes - Rheological characterization of pure emulsion - Interactionof emulsion with associative thickeners - Combined effect of nonionic and anionic surfactants on the interaction of emulsion-AT mix - Use of assiciative thickener in paint DOI : 10.1007/s11998-019-00194-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-019-00194-6.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32864 [article]

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Synthesis and characterization of castor oil-based branched polyols from renewable resources and their polyurethane-urea coatings / Allauddin Shaik in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 2 (03/2019)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 2 (03/2019) . - p. 387-400 Titre : Synthesis and characterization of castor oil-based branched polyols from renewable resources and their polyurethane-urea coatings Type de document : texte imprimé Auteurs : Allauddin Shaik, Auteur ; Kabir Baidya, Auteur ; Kirankumar M. Nehete, Auteur ; Subarna Shyamroy, Auteur Année de publication : 2019 Article en page(s) : p. 387-400 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anhydride succinique Caractérisation Copolymère uréthane-urée Gonflement (physique) Huile de ricin et constituants Polymères -- Synthèse Polymères ramifiés Polyols Polyuréthanes Transition vitreuse Index. décimale : 667.9 Revêtements et enduits Résumé : The chemical modifications of castor oil (CO) to develop branched polyols and their polyurethane-urea coatings have been investigated. For this purpose, castor oil-based branched polyols (COBPs) were synthesized from CO by modifying with succinic anhydride followed by reaction with hydroxyl group moieties like petrochemical-based pentaerythritol, trimethylolpropane and bio-based glycerol. The COBPs were characterized by using Fourier transform infrared, 1H and 13C nuclear magnetic resonance spectroscopies, gel permeation chromatography and differential scanning calorimetry. These COBPs were further urethanized with isophorone diisocyanate at OH/NCO ratio of 1:1.6 to get the isocyanate-terminated polyurethane prepolymers. The surplus isocyanate groups of the prepolymer were cured with atmospheric moisture at ambient temperature condition to form uniform film with fast surface drying. The thermo-mechanical, viscoelastic and swelling properties were evaluated for the cured coating films. Properties have been discussed from the viewpoint of branched network and also the urethane segment present in the structure. The glass transition temperatures of the coating films were found to be in the range of 32–64°C. The modified castor oil coating films show better thermo-mechanical and viscoelastic properties in comparison with control (unmodified castor oil) coating films. This work delivers an effective and promising way to synthesize branched moieties in plant oil-based high performance coatings. Note de contenu : - EXPERIMENTAL SECTION : Materials - METHODS : Synthesis of acid-terminated castor oil (COSA) - Synthesis of castor oil-based branched polyols (COBPs) - CHARACTERIZATION : Structural analysis of CO, COSA and COBPs - Drying time - DMA analysis - Swelling properties - TGA analysis DOI : 10.1007/s11998-018-0118-8 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-0118-8.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32411 [article]

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