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Title: Water Transport Polymers -- Structure/Property Relationships of a Series of Phosphazene Polymers

Abstract

A study was undertaken to explore the water passing properties of a series of phosphazene polymers versus attached pendant group structure. Pendant groups containing different numbers ethyleneoxy groups were synthetically attached to the backbone of phosphazene polymers. Phosphazene polymers facilitate these types of studies because during their synthesis the polymer backbone is formed first and then the desired pendant groups are attached through nucleophilic substitution. For these studies, four polymer series were synthesized and tested for their water passing properties. The polymers contained different amounts of ethyleneoxy units. Two polymer families were synthesized and compared in this work. The critical difference in these two series is that one contained pendant groups with aromatic rings, in addition to the oligioethyleneoxy moieties, while the other does not. Polymers with phenyl group-containing pendant groups exhibited poor water permeability if they possessed fewer than six ethyleneoxy units. Polymers with more than six ethyleneoxy units inserted between the phenyl ring (tail) and the polymeric backbone, exhibited reasonable water permeability. Two additional series of mixed pendant group polymers were synthesized and the water passing properties of the phosphazenes varied in proportion to the hydrophilic to hydrophobic balance induced by each individual pendant group. A final study,more » polymers with shorter pendant groups, is shown to fully demonstrate the effect of pendant group on water permeability. These studies suggest that the polyphosphazenes may be tailored for specific water passing applications.« less

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Idaho National Laboratory (INL)
Sponsoring Org.:
USDOE
OSTI Identifier:
990348
Report Number(s):
INL/JOU-07-13404
Journal ID: ISSN 0149-6395; SSTEDS; TRN: US201020%%348
DOE Contract Number:  
DE-AC07-05ID14517
Resource Type:
Journal Article
Journal Name:
Separation Science and Technology
Additional Journal Information:
Journal Volume: 45; Journal Issue: 12 & 13; Journal ID: ISSN 0149-6395
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AROMATICS; PERMEABILITY; POLYMERS; SYNTHESIS; TRANSPORT; WATER; membranes, polymers, water passing membranes

Citation Formats

Orme, Christopher J, Peterson, Eric S, Bauer, William F, Stewart, Frederick F, Harrup, Mason K, Luther, Thomas A, Klaehn, John R, and Wey, John E. Water Transport Polymers -- Structure/Property Relationships of a Series of Phosphazene Polymers. United States: N. p., 2010. Web.
Orme, Christopher J, Peterson, Eric S, Bauer, William F, Stewart, Frederick F, Harrup, Mason K, Luther, Thomas A, Klaehn, John R, & Wey, John E. Water Transport Polymers -- Structure/Property Relationships of a Series of Phosphazene Polymers. United States.
Orme, Christopher J, Peterson, Eric S, Bauer, William F, Stewart, Frederick F, Harrup, Mason K, Luther, Thomas A, Klaehn, John R, and Wey, John E. Fri . "Water Transport Polymers -- Structure/Property Relationships of a Series of Phosphazene Polymers". United States.
@article{osti_990348,
title = {Water Transport Polymers -- Structure/Property Relationships of a Series of Phosphazene Polymers},
author = {Orme, Christopher J and Peterson, Eric S and Bauer, William F and Stewart, Frederick F and Harrup, Mason K and Luther, Thomas A and Klaehn, John R and Wey, John E},
abstractNote = {A study was undertaken to explore the water passing properties of a series of phosphazene polymers versus attached pendant group structure. Pendant groups containing different numbers ethyleneoxy groups were synthetically attached to the backbone of phosphazene polymers. Phosphazene polymers facilitate these types of studies because during their synthesis the polymer backbone is formed first and then the desired pendant groups are attached through nucleophilic substitution. For these studies, four polymer series were synthesized and tested for their water passing properties. The polymers contained different amounts of ethyleneoxy units. Two polymer families were synthesized and compared in this work. The critical difference in these two series is that one contained pendant groups with aromatic rings, in addition to the oligioethyleneoxy moieties, while the other does not. Polymers with phenyl group-containing pendant groups exhibited poor water permeability if they possessed fewer than six ethyleneoxy units. Polymers with more than six ethyleneoxy units inserted between the phenyl ring (tail) and the polymeric backbone, exhibited reasonable water permeability. Two additional series of mixed pendant group polymers were synthesized and the water passing properties of the phosphazenes varied in proportion to the hydrophilic to hydrophobic balance induced by each individual pendant group. A final study, polymers with shorter pendant groups, is shown to fully demonstrate the effect of pendant group on water permeability. These studies suggest that the polyphosphazenes may be tailored for specific water passing applications.},
doi = {},
journal = {Separation Science and Technology},
issn = {0149-6395},
number = 12 & 13,
volume = 45,
place = {United States},
year = {2010},
month = {1}
}