Reactive Polymers: Main Chain Coordination Polymers for Air Separation

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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

Author(s):
Freeman, Benny D.
Author Organization(s):
NORTH CAROLINA STATE UNIV AT RALEIGH DEPT OF CHEMICAL ENGINEERING
Descriptive Note:
Final rept. 1 Aug 1990-30 Nov 1993
Pagination:
0028

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
ARO-28373.1-CH
Contract/Grant Number(s):
DAAL03-89-D-0003
Monitor Series:
28373.1-CH, ARO
 Subject Terms
Joint Capability Areas:
JCA_6.3.3_Spectrum Management; JCA_6_Net Centric; JCA_6.3_Net Management; JCA_5_Command and Control; JCA_5.3_Planning; JCA_1.2.7_Experimentation; JCA_1_Force Support; JCA_3.2_Engagement; JCA_3_Force Application; JCA_1.2.5_Lessons Learned; JCA_3.2.1_Kinetic Means; JCA_JCA_4.1.2_Sustain the Force; JCA_4.1_Deployment and Distribution; JCA_6.4.1_Secure Information Exchange; JCA_1.2_Force Preparation; JCA_5.3.3_Develop Strategy; JCA_5.3.4_Develop Courses of Action; JCA_5.3.5_Analyze Courses of Action
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*AIR, *CHELATE COMPOUNDS, *POLYMERS, *SEPARATION, COBALT, LIGANDS, MATERIALS, MEMBRANES, MOLECULES, OXYGEN, REVERSIBLE, TRANSPORT PROPERTIES
Field(s)/Group(s):
Inorganic Chemistry, Organic Chemistry, Physical Chemistry, Polymer Chemistry
Keyword(s):
*REACTIVE, *MAIN CHAIN, *COORDINATION, TETRADENATE, SCHIFF BASE, BINDING, BACKBONE
Report Date:
1994 Apr 15