... transform infrared (FT-IR) spectra of PVC samples were collected by using a Bruker Vertex 70 FT-IR spectrometer equipped with an attenuated total reflectance accessory. biomass synthesis thin films T_g glass transition temperature W₁...

... as a highly powerful base catalyst for simple, efficient and environmentally benign synthesis of 3-carboxycoumarins. The operational procedure has several advantages: shorter reaction times; ease of preparation of the catalyst; easy-to-handle catalyst; a simple and greener way to synthesize the target...

... sulfate and filtered. After evaporation of chloroform and then drying under vacuum, a yellow pasty product was obtained (96% yield) and was analyzed by proton and carbon-13 NMR spectroscopy. biomass surface tension synthesis Surfactants are amphiphilic molecules composed of a hydrophobic...