Accession Number:

ADA281614

Title:

Reactive Polymers: Main Chain Coordination Polymers for Air Separation

Descriptive Note:

Final rept. 1 Aug 1990-30 Nov 1993

Corporate Author:

NORTH CAROLINA STATE UNIV AT RALEIGH DEPT OF CHEMICAL ENGINEERING

Personal Author(s):

Report Date:

1994-04-15

Pagination or Media Count:

28.0

Abstract:

The objective of this research program was to develop and characterize new air separation membrane materials based upon polymers with tetradentate Schiff-baseCoII chelates incorporated in the chain backbone. Many tetradentate Schiff-baseCoII chelates reversibly bind oxygen and could, therefore, act as sites for facilitated transport of oxygen through polymeric membranes. However, these compounds often undergo irreversible binding with oxygen, leading to performance deterioration over time. Blending small molecule Schiff-baseCoII chelates with polymers or using polymers as the axial ligands required to activate the CoII for oxygen binding results in a significant increase in the resistance of the compounds to undergo irreversible oxidation. This project explores the notion that the positive oxygen binding stability effects of combing Schiff-baseCoII chelates with polymers might be markedly improved by incorporating the oxygen-binding sites into the backbone of the polymer chain. We have found that polymers containing Schiff-baseCoII in the chain backbone were not very soluble and had, therefore, very low degrees of polymerization. Several novel Schiff bases were synthesized, and their oxygen binding characteristics were determined in solution

Subject Categories:

  • Inorganic Chemistry
  • Organic Chemistry
  • Physical Chemistry
  • Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE