Citation: Saeed Zahmatkesh, Ali Reza Alborzi, Javad Sadeghi, Karim Zare. Interfacial synthesis and properties of L-lysine-derived optically active poly (ester-imide)s[J]. Chinese Chemical Letters, ;2011, 22(5): 607-610. doi: 10.1016/j.cclet.2010.11.016 shu

Interfacial synthesis and properties of L-lysine-derived optically active poly (ester-imide)s

a Department of Science, Payame Noor University(PNU), Tehran, Iran;
b Department of Chemistry, Islamic Azad University, Firouzabad, Fars, Iran

Received Date: 30 August 2010

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℃ and display glass-transition temperatures at 100.42-172.81℃.All of the above polymers were fully characterized by UV, FT-IR and ¹H NMR spectroscopy, elemental analysis, TGA, DSC, inherent viscosity measurement and specific rotation.
- 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℃ and display glass-transition temperatures at 100.42-172.81℃.All of the above polymers were fully characterized by UV, FT-IR and ¹H NMR spectroscopy, elemental analysis, TGA, DSC, inherent viscosity measurement and specific rotation.
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