چكيده لاتين :
Five new polythioamides were prepared by polycondensation of a mixture of
sulphur and various diamines with a dicarbonyl compound [4,4پf-
methylenebis(cinnamaldehyde)] (MBC). The used diamino compounds were
ethylenediamine, 1,3-propylenediamine, meso-stilbenediamine, semicarbazide, and
thiosemicarbazide. The polythioamides formed were characterized by elemental microanalysis,
FTIR, UV, Vis, and 1H NMR spectroscopies, thermal analysis and viscosity
measurement. All the polythioamides indicated a characterized band within 1230-1260
cm-1 due to ƒثC=S vibrations. The synthesized polythioamides indicated better thermal
stability up to 600oC. The dialdehyde (MBC) and polythioamides were soluble in
number of organic solvents including tetrahydrofuran, dimethyl formamide, dimethyl
acetamide, and dimethyl sulphoxide. The intrinsic viscosities of these polythioamide
ranged within 0.393-0.5201 dL/g as compared to 0.174-0.249 dL/g for dialdehyde
(MBC) in THF.
