Preparation and characterization of p-tert-butyl thiacalix[4]arene imbedded flexible polyurethane foam: An efficient novel cationic dye adsorbent |
| |
| Affiliation: | 1. Department of Organic Chemistry, Faculty of Chemistry, University of Mazanadaran, P.O. Box 47416, Babolsar, Iran;2. Department of Polyurethane, Iran Polymers and Petrochemicals Institute, P.O. Box 14965-115, Tehran, Iran;1. Lomonosov Moscow State University, Organic Chemistry Department, 119992 Moscow, Russia;2. Ural Federal University, Technology of Organic Synthesis Department, 620002, Yekaterinburg, Russia;1. A. M. Butlerov Chemical Institute, Kazan (Volga Region) Federal University, 420008 Kazan, Russian Federation;2. A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of the Russian Academy of Sciences, 420088 Kazan, Russian Federation;1. Thermodynamics Laboratory, ETSEIB Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain;2. Department of Analytical and Organic Chemistry, Universitat Rovira i Virgili, C/ Marcel·lí Domingo s/n, 43007 Tarragona, Spain;3. Department of Mechanical Engineering, Universitat Rovira i Virgili, C/ Països Catalans, 26, 43007 Tarragona, Spain;1. Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China;2. University of Chinese Academy of Sciences, Beijing 100049, PR China |
| |
| Abstract: | In this study, a new type of flexible polyurethane foam containing p-tert-butyl thiacalix4]arene (TC4A) macrocycle was synthesized. TC4A macrocycle was incorporated into polyurethane foam as a part of crosslinking agent as well as glycerol. Structural, morphological, thermal and mechanical properties of this prepared foam were studied and compared with a polyurethane foam based on only glycerol as crosslinking agent, by Fourier transform infrared (FTIR), Scanning electron microscopy (SEM), Thermal gravimetric analysis (TGA), and dynamic mechanical thermal analysis (DMTA). The effect of introduction of TC4A crosslinker on cream time, rise time, apparent density, and water absorbency of the PU foams was evaluated. Moreover, it was shown that new TC4A-based polyurethane foam (TC-PUF) can be a high performance adsorbent for removal of malachite green from aqueous media using batch adsorption technique. The adsorption results indicated that TC-PUF has a high adsorption capacity of 58.82 mg/g for malachite green due to the presence of TC4A macrocycles in the structure of polyurethane foam. The kinetics of adsorption of malachite green was also investigated using the pseudo-first-order and pseudo-second-order kinetic models. The results of kinetic studies showed that the adsorption of malachite green onto TC-PUF followed pseudo-second-order kinetic model. |
| |
| Keywords: | Polyurethane foams Calix[4] arenes p-tert-Butyl thiacalix[4]arene Adsorption Malachite green |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
