Interfacial synthesis and properties of l-lysine-derived optically active poly(ester-imide)s
作者:Saeed Zahmatkesh、Ali Reza Alborzi、Javad Sadeghi、Karim Zare
DOI:10.1016/j.cclet.2010.11.016
日期:2011.5
L-Lysine hydrochloride was transformed to ethyl L-lysine dihydrochloride. This salt was reacted with trimellitic anhydride to yield the corresponding diacid (1). Interfacial polycondensation results novel poly(ester-imide)s (PEI(a-i)). These polymers have inherent viscosities in the range of 0.23-0.47 dl g(-1), display optical activity, and are readily soluble in polar aprotic solvents. They start to decompose (T(10%)) above 350 degrees C and display glass-transition temperatures at 100.42-172.81 degrees C. All of the above polymers were fully characterized by UV, FT-IR and (1)H NMR spectroscopy, elemental analysis, TGA, DSC, inherent viscosity measurement and specific rotation. (C) 2010 Ali Reza Alborzi. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.