Synthesis and Characterization of Chelated Polymers of Polyhydrazones

폴리히드라존계 킬레이트 고분자의 합성과 특성

  • Kong Soo Kim (Department of Chemical Engineering, Chung Buk University) ;
  • Yong Woo Lee (Department of Chemical Engineering, Chung Buk University) ;
  • Doo Hee Lee (Department of Chemical Engineering, Chung Buk University)
  • 김공수 (충북대학교 공과대학 화학공학과) ;
  • 이영우 (충북대학교 공과대학 화학공학과) ;
  • 이두희 (충북대학교 공과대학 화학공학과)
  • Published : 1985.10.20

Abstract

A new class of polyhydrazones has been synthesized by the solution polycondensation from equimolecular amounts of aromatic dialdehydes such as para, meta, ortho-phthal aldehyde, 5,5'-methylene-bis-salicyl aldehyde (PPTA, MPTA, OPTA, MBSA) and dihydrazides, 5,5'-methylene-bis-salicylic dihydrazide (MBSDH), terephthalic dihydrazide (TDH), sebacic dihydrazide (SDH) in DMF-$CH_3COOH$ solution. The solubility characteristics, spectral, and thermal properties of the synthesized polyhydrazones and their metal chelates were also studied. These polyhydrazones and their metal chelates except the polyhydrazone prepared from OPTA-MBSDH were generally insoluble in common organic solvents. The thermogravimetric analysis of polyhydrazones showed 10% weight losses at 250∼350$^{\circ}$C and residual weight at 500$^{\circ}$C were 32.5∼62.5%. The decomposition temperature of higher relatively, and the metal chelates decrease in the following orders; Zn(II)-IIa > Ni(II)-IIa > Co(II)-IIa > Cu(II)-IIa.

Keywords

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