Results 81 to 90 of about 32,224 (256)
Sensors, 2010 We report on the development of a microelectromechanical systems (MEMS)-scale photoacoustic sensor for the detection of trace gases. A mid-infrared quantum cascade laser (QCL) was used to determine detection limits for acetic acid, acetone, 1,4-dioxane ...
Almon Fisher +3 more
doaj +1 more source
Assessing Photovoltaic Recycling Capacities and Policy Gaps in the European Union
Advanced Energy and Sustainability Research, EarlyView.This study maps photovoltaic recycling capacity in the EU and key global regions, highlighting gaps between growing waste volumes and available infrastructure. It combines survey insights and policy analysis to identify recycling bottlenecks and offers recommendations to boost circularity in the solar sector.
Nieves Espinosa +3 more
wiley +1 more source
Synthesis of functionalized polyolefins in a new continuous bench‐scale reactor apparatus
AIChE Journal, EarlyView.Abstract In‐reactor functionalized polyolefins (FPOs), produced by molecular catalysts, are a new class of polymer materials with applications ranging from high performance adhesives to bitumen compatibilization. In this work, we disclose a procedure for the synthesis of FPOs in a new Continuous Bench‐scale Reactor Apparatus (COBRA).
Miloud Bouyahyi +7 more
wiley +1 more source
Advanced Intelligent Discovery, EarlyView.A machine learning framework simultaneously predicts four critical properties of monomers for emulsion polymerization: propagation rate constant, reactivity ratios, glass transition temperature, and water solubility. These tools can be used to systematically identify viable bio‐based monomer pairs as replacements for conventional formulations, with ...
Kiarash Farajzadehahary +1 more
wiley +1 more source
PENGARUH RESIN TERHADAP PERUBAHAN WARNA PADA CAT TEMBOK
Sains Natural, 2019 The Influence of Resin against the Change of Color on the Wall Paint The quality of the paint is determined by the resin used. Synthetic resins for polymer paints are made by combining several monomers to achieve various characteristics.
Nurlela Nurlela, Risnawati Risnawati
doaj +1 more source
Photooxidation of blends of vinyl alcohol – vinyl acetate copolymer with polyhydroxybutyrate
Тонкие химические технологии, 2010 The influence of poly(3-hydroxybutyrate) (10-20 weight %) on the expenditure and accumulation of chromophore groups was studied, as well as oxygen absorption upon photooxidation of a vinyl alcohol - vinyl acetate copolymer. The article suggests a kinetic
V. B. Ivanov +5 more
doaj
Preparation and Characterization of Poly Vinyl Acetate Nanofiber Doping Copper Metal
International Journal of Electrochemical Science, 2012 Electrospinning is a very simple and versatile process by which polymer nanofibers with diameters ranging from a few nanometers to several micrometers (usually between 50 and 500 nm) can be produced using an electrostatically driven jet of polymer ...
M.A. Abu-Saied +2 more
doaj +1 more source
Anais da Academia Brasileira de Ciências, 2006 Both the regio- and stereo-chemistries of the photoreactions of 1-naphthyl (R)-2-phenylpropanoate have been investigated in poly(vinyl acetate) films in their glassy (at 5masculineC) and melted (at 50masculineC) states and in ethyl acetate. These results
Xu Jinqi +2 more
doaj
Oil & Gas Science and Technology, 2006 On cherche à mettre en évidence le mode d'action des copolymères éthylène-acétate de vinyle sur la cinétique de cristallisation des n-paraffines en milieu hydro-carbure.
Petinelli J. C.
doaj +1 more source
Photogenerated Oxetanes as a Gateway to Uphill Cyclopropanation
Angewandte Chemie International Edition, EarlyView.An atom‐economical route to densely functionalized cyclopropanes from furans and photochemically activated aldehydes is enabled by a unique oxetane‐to‐cyclopropane rearrangement. These cyclopropanes can be used to access complex bioactive scaffolds and serve as a platform for asymmetric cyclopropane synthesis.
Tim Köglmeier +2 more
wiley +1 more source