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

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题名:	Synthesis, characterization, and properties of co-poly(ether-urethane-urea) s containing lariat cryptand 22: Li+ harvesting polymers
作者:	Mallakpour, S., Rafiemanzelat, F., Zolfigol, M.A., Salehi, P., Yang, D.Y.
贡献者:	Department of Chemistry, Tunghai University
关键词:	Cryptands;Ion absorption selectivity;Poly(ether-urethane-urea)s;Polyethylene glycol
日期:	2011
上传时间:	2013-05-14T09:02:30Z (UTC)
摘要:	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.
關聯:	Polymer Bulletin 67 (4) , pp. 553-569
显示于类别:	[化學系所] 期刊論文

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