title: Effective clean-up of organic liquid contaminants including BTEX, fuels, and organic solvents from the environment by poly(alkoxysilane) sorbents.
abstract: Novel cross-linked poly(alkoxysilane)s, which can be used for the removal of organic liquid contaminants from water, were synthesized in one step, in a solvent free reaction medium, at moderately high temperature without using a catalyst. The synthesized polymers were characterized by Fourier transform infrared spectroscopy (FTIR), solid-state (13)C and (29)Si cross-polarization magic angle spinning (CPMAS) nuclear magnetic resonance (NMR), thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) methods and elemental analysis. The swelling features of the poly(alkoxysilane)s were investigated in organic solvents and oils, such as dichloromethane, benzene, toluene, xylene, methyl tertiary butyl ether, and also some fuel derivatives, such as gasoline and euro diesel. All polymers have high-fast solvent uptake abilities, good reusability and thermal stability. The swelling features of the synthesized cross-linked polymers were evaluated by the swelling test, absorption-desorption kinetics. Thus, the results propose that cross-linked poly(alkoxysilane)s are suitable for the absorption of oil-organic pollutants from the water surface.
authors.affiliation: Gebze Technical University, Department of Chemistry, PO. Box 141, 41400 Gebze, Kocaeli, Turkey.
authors.forename: Koksal
authors.initials: K
authors.lastname: Karadag
authors.affiliation: Gebze Technical University, Department of Chemistry, PO. Box 141, 41400 Gebze, Kocaeli, Turkey.
authors.forename: Ilker
authors.initials: I
authors.lastname: Yati
authors.affiliation: Gebze Technical University, Department of Chemistry, PO. Box 141, 41400 Gebze, Kocaeli, Turkey. Electronic address: hayalsonmez@gtu.edu.tr.
authors.forename: Hayal
authors.initials: H
authors.lastname: Bulbul Sonmez
mesh_terms: D000327:Adsorption; D003432:Cross-Linking Reagents / Q000737:chemistry*; D005742:Gasoline / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy; D017646:Organosilicon Compounds / Q000737:chemistry*; D059392:Petroleum Pollution / Q000517:prevention & control*; D012821:Silanes / Q000138:chemical synthesis / Q000737:chemistry*; D012997:Solvents / Q000032:analysis* / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry
chemical_list: D003432:Cross-Linking Reagents; D005742:Gasoline; D017646:Organosilicon Compounds; D012821:Silanes; D012997:Solvents; D014874:Water Pollutants, Chemical
keywords: 1,8-bis(triethoxysilyl) octane; BTEX; Cross-linked poly(alkoxysilane)s; Desorption; Reusability; Swelling