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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 29, Number 5
JKCSEZ 29(5)
October 20, 1985 

 
Title
Synthesis and Characterization of Chelated Polymers of Polyhydrazones

폴리히드라존계 킬레이트 고분자의 합성과 특성
Author
Kong Soo Kim, Yong Woo Lee, Doo Hee Lee

김공수, 이영우, 이두희
Keywords
Abstract
p-, m-, o-phthalaldehyde 및 5,5'-methylene-bis-salicyl aldehyde (PPTA, MPTA, OPTA, MBSA)와 5,5'-methylene-bis-salicylic dihydrazide, terephthalic dihydrazide 및 sebacic dihydrazide(MBSDH, TDH 및 SDH)등의 디히드라지드 화합물을 DMF-CH3COOH 혼합용액 중에서 축합반응으로 몇가지 새로운 폴리히드라존을 합성하였다. 합성한 폴리히드라존과 그의 금속킬레이트의 용해성, 흡수스펙트라 및 열적성질에 대하여 검토하였다. OPTA와 MBSDH의 반응으로 얻어진 폴리히드라존을 제외한 폴리히드라존과 그의 금속킬레이트는 일반적으로 보통 유기용매에 불응성이었다.

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-CH3COOH 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℃ and residual weight at 500℃ 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.

Page
543 - 551
Full Text
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