PREPARATION AND CHARACTERIZATION OF SCHIFF BASE POLYMERS DERIVED FROM 4,4'-METHYLENEBIS(CINNAMA

• 作 者: M.Y. Khuhawar A. Shah M.A. Mughal
• 机 构: Dr. M.A. Kazi Institute of Chemistry University of Sindh,Jamshoro,Sindh,Pakistan,Dr. M.A. Kazi Insti
• 出 处: Chinese Journal of Polymer Science
• 发表日期: 2007年04期

New Schiff base polymers poly[4,4’-methylenebis(cinnamaldehyde)ethylenediimine] (PMBCen), poly[4,4’-methylenebis(cinnamaldehyde) 1,2-propylenediimine] (PMBCPn), poly[4,4’-methylenebis(cinnamaldehyde) 1,3-propylenediimine] (PMBCPR), poly[4,4’-methylenebis(cinnamaldehyde)l,2-phenylenediimine] (PMBCPh), poly[4,4’-methylene-bis(cinnamaldehyde)meso-stilbenediimine] (PMBCS), poly[4,4’-methylenebis(cinnamaldehyde)urea] (PMBCUR), poly[4,4’-methylenebis(cinnamaldehyde)semicarbazone] (PMBCSc), poly[4,4’-methylenebis(cinnamaldehyde)thiosemicarbazone] (PMBCTSc) and poly[4,4’-methylenebis(cinnamaldehyde)hydrazone] (PMBCH) were formed by polycondensation of 4,4’-methylenebis(cinnamaldehyde) with ethylenediamine, 1,2-propylenediamine, 1,3-propylenediamine, 1,2-phenylenediamine, meso-stilbenediamine, urea, semicarbazide, thiosemicarbazide and hydrazine, respectively. The dialdehyde and polymers have been characterized through elemental micro-analysis, IR, UV-Vis and ’H-NMR spectroscopic techniques. Thermoanalytical studies and viscous flow of dilute solutions of dialdehyde and its polymers have been examined and compared.

New Schiff base polymers poly [4,4’-methylenebis (cinnamaldehyde) ethylenediimine] (PMBCen), poly [4,4’-methylenebis (cinnamaldehyde) 1,2-propylenediimine] (PMBCPR), poly [4,4’-methylenebis (cinnamaldehyde) l, 2-phenylenediimine] (PMBCPh), poly [4,4’-methylene- bis (cinnamaldehyde) meso-stilbenediimine (PMBC), poly [4,4’-methylenebis (cinnamaldehyde) urea] (PMBCUR), poly [4,4’- methylenebis (cinnamaldehyde) semicarbazone] thiosemicarbazone] (PMBCTSc) and poly [4,4’-methylenebis (cinnamaldehyde) hydrazone] (PMBCH) were formed by polycondensation of 4,4’-methylenebis (cinnamaldehyde) , 1,2-phenylenediamine, meso-stilbenediamine, urea, semicarbazide, thiosemicarbazide and hydrazine, respectively. The dialdehyde and polymers have been characterized through elemental micro-analysis, IR, UV- Vis and ’H- NMR spectroscopic techniques. Th ermoanalytical studies and viscous flow of dilute solutions of dialdehyde and its polymers have been examined and compared.