| Title: | Bio-based thermosetting epoxy foam: Tannic acid valorization toward dye-decontaminating and thermo-protecting applications |
| Author(s): | Esmaeili N; Salimi A; Zohuriaan-Mehr MJ; Vafayan M; Meyer W; |
| Address: | "Department of Functional Polymer Systems, Fraunhofer Institute for Applied Polymer Research (IAP), Geiselbergstrasse 68, 14476, Potsdam-Golm, Germany; Adhesive and Resin Department, Polymer Processing Faculty, Iran Polymer and Petrochemical Institute (IPPI), PO Box 14965-115, Tehran, Iran; Bio-based Monomers & Polymers Division (BIOBASED Division), Iran Polymer and Petrochemical Institute (IPPI), PO Box 14965-115, Tehran, Iran. Adhesive and Resin Department, Polymer Processing Faculty, Iran Polymer and Petrochemical Institute (IPPI), PO Box 14965-115, Tehran, Iran. Electronic address: a.salimi@ippi.ac.ir. Adhesive and Resin Department, Polymer Processing Faculty, Iran Polymer and Petrochemical Institute (IPPI), PO Box 14965-115, Tehran, Iran; Bio-based Monomers & Polymers Division (BIOBASED Division), Iran Polymer and Petrochemical Institute (IPPI), PO Box 14965-115, Tehran, Iran. Adhesive and Resin Department, Polymer Processing Faculty, Iran Polymer and Petrochemical Institute (IPPI), PO Box 14965-115, Tehran, Iran. Department of Functional Polymer Systems, Fraunhofer Institute for Applied Polymer Research (IAP), Geiselbergstrasse 68, 14476, Potsdam-Golm, Germany. Electronic address: wolfdietrich.meyer@iap.fraunhofer.de" |
| DOI: | 10.1016/j.jhazmat.2018.05.045 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "Bio-resourced thermosetting epoxy foam was synthesized from tannic acid toward two different applications e.g., dye-decontaminating and thermo-insulating. Epoxidized tannic acid (ETA) foam was produced without using of organic volatile compounds or flammable foaming gases. The foam density, thermal conductivity and closed-cell content were studied. Besides, TGA showed high char yield (49% in N(2) and 48.3% in air) at 600?ª+ degrees C accompanied by high LOI (37.1 in N(2) and 36.8 in air). The high thermo-stability and intumescent char yield along with low thermal conductivity recommends the foam suitability for being used as an insulating material. Additionally, sorption of methylene blue onto ETA foam was kinetically investigated. The study of contact time, ionic strength, solution pH, initial sorbate concentration and desorption revealed the dependency of the sorption process to pH and initial sorbate concentration. The experimental data fitted well with the Langmuir isotherm (R(2)?ª+=?ª+0.997), yielding maximum sorption capacity of 36.25?ª+mg/g (ETA foam?ª+=?ª+0.05?ª+g, pH?ª+=?ª+7, MB concentration?ª+=?ª+50?ª+ppm, Volume?ª+=?ª+25?ª+mL). The kinetic data verified that MB sorption could be represented by the pseudo second-order model. Overall, the ETA foam can be introduced as a candidate for removing cationic pollutants, thermal insulator, and self-extinguishing/intumescent materials" |
| Keywords: | "Coloring Agents/*chemistry Epoxy Compounds/*chemistry Methylene Blue/*chemistry Tannins/*chemistry Water Pollutants, Chemical/*chemistry Water Purification Adsorption kinetics Dye-decontaminating Green building blocks Thermo-insulation Thermosetting foam;" |
| Notes: | "MedlineEsmaeili, N Salimi, A Zohuriaan-Mehr, M J Vafayan, M Meyer, W eng Netherlands 2018/06/03 J Hazard Mater. 2018 Sep 5; 357:30-39. doi: 10.1016/j.jhazmat.2018.05.045. Epub 2018 May 23" |
