Journal
POLYMER BULLETIN
Volume 67, Issue 4, Pages 553-569Publisher
SPRINGER
DOI: 10.1007/s00289-010-0394-7
Keywords
Poly(ether-urethane-urea)s; Cryptands; Polyethylene glycol; Ion absorption selectivity
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Funding
- Research Deputy of Ministry of Science, Research, and Technology of I.R. Iran [32-2450]
- Research Affairs Division Isfahan University of Technology (IUT)
- Center of Excellency in Sensors and Green Chemistry Research IUT
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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.
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