Type: Article

Synthesis, characterization, and properties of co-poly(ether-urethane-urea) s containing lariat cryptand 22: Li+ harvesting polymers

Journal: Polymer Bulletin (01700839)Year: 2011/08/01Volume: Issue: 4

Mallakpour S.Rafiemanzelat F.^a Zolfigol M.A. Salehi P. Yang D.Y.

a :University of Isfahan - IRAN(IR) - Isfahan

DOI:10.1007/s00289-010-0394-7Language: English

Abstract

In this work, some segmented poly(ether-urethane-urea)s (PEUUs) containing aza crown ether (cryptand) were prepared and characterized. These polymers were synthesized via the reaction of kryptofix 22 with 2 mol excess of 4,4′-methylene-bis-(4-phenylisocyanate) (MDI), and different molecular weights of polyethylene glycols (PEGs). Morphology, thermal, and complexation properties of these polymers were studied by Fourier-transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), atomic absorption spectroscopy (AAS), and solid state NMR (S-NMR). The data confirmed complexation ability of these polymers for Li+ ion absorption and revealed the effect of Li+ ion complexation on the morphology and thermal behavior of the PEUUs. © 2010 Springer-Verlag.